3 EMC Symmetrix Metrics

This chapter provides descriptions for all EMC CLARiiON metric categories and the associated metrics for each category.

The Symmetrix plug-in enables monitoring of the various components of the array and mapping of the various database entities such as tablespaces/datafiles, ASM disk groups, host file systems and raw devices to the various EMC Symmetrix storage components such as Hypers, Metas, Front-end directors and Disk Adapters.

3.1 Response Metrics

The metrics in this category provide information about the UP/DOWN status of the Symmetrix Array being monitored.

Default Collection Interval — Every 2 minutes

Table 3-1 Response Metrics

Metric	Description	Target Version	Upload Frequency	Operator	Default Critical Threshold	Consecutive Number of Occurrences Preceding Notification	Alert Text
CLARiiON Status	The metric provides the UP/DOWN Status of the Symmetrix target that is being monitored by the plug-in.	All Versions	After Every Sample	=	0	1	%target% is unreachable or SYMCLI is not operational.

3.2 Write Locks Metrics

Symmetrix write locks are used by SYMAPI (locks 0 to 15) and also for applications assigned by EMC (>15) to lock access to the entire Symmetrix array during critical operations. The locks can be listed and released thereafter.

Default Collection Interval — Every 15 minutes

Table 3-2 Write Locks Metrics

Metric	Description
Director ID	Director ID on which the lock is obtained.
Attachment	Mode of attachment (Local/Remote) to the monitoring host.
Lock Number	Lock number of the lock established.
Lock Status	Status of the lock.
Lock Usage	Purpose of acquiring the lock.
Time Held	Time for which the lock is held.

3.3 Device WWN Metrics

The metrics in this category provide information about the World Wide Name of the device.

Default Collection Interval — Every 24 hours

Table 3-3 Device WWN Metrics

Metric	Description and User Action
Device Num	Device number assigned to the device.
Device WWN	World Wide Name of the device.

3.4 Applications Metrics

The metrics in this category provide information about the list of the applications used for monitoring Symmetrix.

Default Collection Interval — Every 24 hours

Table 3-4 Applications Metrics

Metric	Description and User Action
IP Address	IP address of the host.
Vendor	Vendor of the application.
Application Attribute	Attribute of the application.

3.5 Device Inventory Metrics

The metrics in this category provide information on metaLUN statistics summary.

Default Collection Interval — Every 24 hours

Table 3-5 Device Inventory Metrics

Metric	Description
Device Inventory	Metric used to monitor the device inventory in the array.
Count	Count of the device inventory.

3.6 Cache Properties Metrics

The metrics in this category provide information about viewing all or a specific, least-recently-used (LRU) cache management group of the Symmetrix array.

Default Collection Interval — Every 15 minutes

Table 3-6 Cache Properties Metrics

Metric	Description and User Action
LRU Name	Name of the cache.
Cache Slots	Slot of the cache board
Percentage Usage	Usage percent of the cache.

3.7 Host Capacity Metrics

This metric category lists the Symmetrix to host allocations, for the host being monitored by the agent. The data collected includes the mapping of the hyper to the Frontend Director, and the port through which the hyper is allocated to the host.

Default Collection Interval — Every 24 hours

Table 3-7 Host Capacity Metrics

Metric	Description and User Action
Mapped Std. Device Capacity (GBs)	Capacity of the standard device that is mapped to a Frontend port.
Mapped BCV Capacity (GBs)	Capacity of the BCV that is mapped to a frontend port.
Paired BCV Capacity (GBs)	Capacity of a paired BCV.

3.8 Frontend Director Statistics Metrics

The metrics in this category provide information about the frontend director statistics.

Default Collection Interval — Every 15 minutes

Table 3-8 Frontend Director Statistics Metrics

Metric	Description
Frontend Director Host I/Os Per Second	I/O rates (operations per second) for Host to Frontend Disk director to Backend director.
Frontend Director Cache Reads Per Second	Cache reads per second by the frontend director.
Frontend Director Cache Writes Per Second	Cache writes per second by the frontend director.

3.9 Frontend Director Statistics Summary Metrics

The overall performance of all the Frontend Directors can be monitored using this metric category. This metric category runs frequently and fetches the performance data. Some of the performance data monitored are IO/sec, Reads/ Writes per second. Cache hits.

Default Collection Interval — Every 15 minutes

Table 3-9 Frontend Director Statistics Summary Metrics

Metric	Description
Total Frontend Director Host I/Os Per Second	I/Os Per Second of all the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Frontend Director Host I/O Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Frontend Director Cache Reads Per Second	Cache reads per second of all the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Frontend Director Cache Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Frontend Director Cache Writes Per Second	Cache writes per second of all the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Frontend Director Cache Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Disk ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Frontend Director Cache Read-Writes Per Second	Cache read-writes per second of all the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Frontend Director Cache Read Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Frontend Director Cache Hit Percentage	Cache hit percentage of all the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Frontend Director Cache Hit Percentage is %value%%%, crossed warning (%warning_threshold%%%) or critical (%critical_threshold%%%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.

3.10 Frontend Director Statistics Details Metrics

Performance of each of the Frontend Directors can be monitored using this metric category. This metric category runs frequently and fetches the performance data. Some of the performance data monitored are IO/ sec, Reads/Writes per second and Cache hits.

Default Collection Interval — Every 15 minutes

Table 3-10 Frontend Director Statistics Details Metrics

Metric	Description and User Action
Frontend Director Host I/Os Per Second	I/O rates (operations per second) for host to frontend director. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Frontend Director %fedirector% Host I/O Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Frontend Director ID" object. If warning or critical threshold values are currently set for any "Frontend Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Frontend Director ID" object, use the Edit Thresholds page.
Frontend Director Cache Reads Per Second	Cache reads per second by the frontend director. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Frontend Director %fedirector% Cache Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Frontend Director ID" object. If warning or critical threshold values are currently set for any "Frontend Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Frontend Director ID" object, use the Edit Thresholds page.
Frontend Director Cache Writes Per Second	Cache writes per second by the frontend director. Operator - > The consecutive number of occurrences preceding notification - 1 Frontend Director %fedirector% Cache Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Frontend Director ID" object. If warning or critical threshold values are currently set for any "Frontend Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Frontend Director ID" object, use the Edit Thresholds page.
Frontend Director Cache Read-Writes Per Second	Cache read-writes per second by the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Frontend Director %fedirector% Cache Read Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Frontend Director ID" object. If warning or critical threshold values are currently set for any "Frontend Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Frontend Director ID" object, use the Edit Thresholds page.
Frontend Director Cache Hit Percentage	Cache hit percentage by the frontend directors. Operator - > The consecutive number of occurrences preceding notification - 1 Frontend Director %fedirector% Cache Read Writes Per Second is %value%%%, crossed warning (%warning_threshold%%%) or critical (%critical_threshold%%%) threshold. For this metric you can set different warning and critical threshold values for each "Frontend Director ID" object. If warning or critical threshold values are currently set for any "Frontend Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Frontend Director ID" object, use the Edit Thresholds page.

3.11 Disk Director Statistics Metrics

Performance of the Disk Directors can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are IO/sec, Reads/Writes per second, and Cache hits.

Default Collection Interval — Every 15 minutes

Table 3-11 Disk Director Statistics Metrics

Metric	Description and User Action
Disk Director Disk I/Os Per Second	I/Os per second of the Disk Directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Disk Director Disk I/O Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Director Cache Reads Per Second	Cumulative cache reads per second of all the Disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Disk Director Cache Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Director Cache Writes Per Second	Cumulative writes per second of all the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Disk Director Cache Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Director Cache Read-Writes Per Second	Total cache read-writes of all the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Disk Director Cache Read Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Director Cache Hit Percentage	Total cache hit percentage of all the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Total Disk Director Cache Hit Percentage is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.

3.12 Disk Director Statistics Details Metrics

Default Collection Interval — Every 15 minutes

Table 3-12 Disk Director Statistics Details Metrics

Metric	Description and User Action
Disk Director Disk I/Os Per Second	I/Os per second of the Disk Directors. Operator - > The consecutive number of occurrences preceding notification - 1 Disk Director %bedirector% Disk I/O Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Director ID" object. If warning or critical threshold values are currently set for any "Disk Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Director ID" object, use the Edit Thresholds page.
Disk Director Cache Reads Per Second	Cache reads per second by the Disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Disk Director %bedirector% Cache Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Director ID" object. If warning or critical threshold values are currently set for any "Disk Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Director ID" object, use the Edit Thresholds page.
Disk Director Cache Writes Per Second	Cache writes per second by the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Disk Director %bedirector% Cache Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Director ID" object. If warning or critical threshold values are currently set for any "Disk Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Director ID" object, use the Edit Thresholds page.
Disk Director Cache Read-Writes Per Second	Cache read-writes per second by the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Disk Director %bedirector% Cache Read Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Director ID" object. If warning or critical threshold values are currently set for any "Disk Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Director ID" object, use the Edit Thresholds page.
Disk Director Cache Hit Percentage	Cache hit percentage by the disk directors. Operator - > The consecutive number of occurrences preceding notification - 1 Disk Director %bedirector% Cache Hit Percentage is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Director ID" object. If warning or critical threshold values are currently set for any "Disk Director ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Director ID" object, use the Edit Thresholds page.

3.13 Hyper Statistics Metrics

The performance of the hypers can be monitored using this metric. This metric runs once in 30 seconds to fetch the data. Some of the performance data monitored are reads/writes per second, read/write throughput, and so on.

Default Collection Interval — Every 15 minutes

Table 3-13 Hyper Statistics Metrics

Metric	Description and User Action
Hyper Reads Per Second	Number of reads per second on the hyper.
Hyper Writes Per Second	Number of writes per second on the hyper.
Hyper Read Throughput (KB/Sec)	Read Throughput of the hyper.
Hyper Write Throughput (KB/Sec)	Write Throughput of the hyper.
Hyper Read Cache Hits Percentage	Read cache hit percentage of the hypes.
Hyper Write Cache Hits Percentage	Write Cache hits percent on the hyper.
Hyper Sequential Read Percentage	Sequential reads percentage of the hyper.
Hyper Write Pending Tracks	Write pending tracks for the hyper.

3.14 Hyper Statistics Summary Metrics

Overall performance of all the hypers can be monitored using this metric. This metric runs once in 30 seconds to fetch the data. Some of the performance data monitored are reads/ writes per second, read/write throughput, and so on.

Default Collection Interval — Every 15 minutes

Table 3-14 Hyper Statistics Summary Metrics

Metric	Description and User Action
Total Hyper Reads Per Second	Reads per second of all the hypers. Operator - > The consecutive number of occurrences preceding notification - 1 Total Hyper Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Hyper Writes Per Second	Writes per second of all the hypers. Operator - > The consecutive number of occurrences preceding notification - 1 Total Hyper Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Hyper Read Throughput (KB/Sec)	Read throughput of all the hypers. Operator - > The consecutive number of occurrences preceding notification - 1 Total Hyper Read Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Hyper Write Throughput (KB/Sec)	Write throughput of all the hypers. Operator - > The consecutive number of occurrences preceding notification - 1 Total Hyper Write Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Hyper Read Cache Hits Percentage	Read cache hit percentage of all the hypers.
Total Hyper Write Cache Hits Percentage	Write cache hit percentage of all the hypers.
Total Hyper Sequential Read Percentage	Sequential read percentage of all the hypers.
Total Hyper Write Pending Tracks	Hyper write pending tracks of all the hypers.

3.15 Hyper Statistics Details Metrics

The performance of the hypers can be monitored using this metric. This metric runs once in 30 seconds to fetch the data. Some of the performance data monitored are reads/ writes per second, read/write throughput, and so on.

Default Collection Interval — Every 15 minutes

Table 3-15 Hyper Statistics Details Metrics

Metric	Description and User Action
Hyper Reads Per Second	Number of reads per second on the hyper. Operator - > The consecutive number of occurrences preceding notification - 1 Hyper %dev_name% Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Device Name" object. If warning or critical threshold values are currently set for any "Device Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Device Name" object, use the Edit Thresholds page.
Total Hyper Writes Per Second	Writes per second of all the hypers. Operator - > The consecutive number of occurrences preceding notification - 1 Hyper %dev_name% Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Device Name" object. If warning or critical threshold values are currently set for any "Device Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Device Name" object, use the Edit Thresholds page.
Hyper Read Throughput (KB/Sec)	Read Throughput of the hyper. Operator - > The consecutive number of occurrences preceding notification - 1 Hyper %dev_name% Read Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Device Name" object. If warning or critical threshold values are currently set for any "Device Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Device Name" object, use the Edit Thresholds page.
Hyper Write Throughput (KB/Sec)	Write Throughput of the hyper. Operator - > The consecutive number of occurrences preceding notification - 1 Hyper %dev_name% Write Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Device Name" object. If warning or critical threshold values are currently set for any "Device Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Device Name" object, use the Edit Thresholds page.
Hyper Read Cache Hits Percentage	Read cache hits percent on the hyper.
Hyper Write Cache Hits Percentage	Write cache hits percent on the hyper.
Hyper Sequential Read Percentage	Sequential reads percent on the hyper.
Hyper Write Pending Tracks	Write pending tracks for the hyper.

3.16 Memory I/O Statistics Metrics

Memory IO performance can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are write pending tracks, % of dev write pending, and so on.

Default Collection Interval — Every 15 minutes

Table 3-16 Memory I/O Statistics Metrics

Metric	Description and User Action
Write Pending Tracks	Write pending track count not yet destaged to disk.
Prefetch Tracks	Track Prefetch rate (tracks per second).
Destaged Tracks	Number of tracks that have been destaged to the hypers.
Write Pending Max Percentage	Percentage of write pending tracks.

3.17 Memory I/O Statistics Summary Metrics

Overall Memory IO performance can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are write pending tracks and % of dev write pending.

Default Collection Interval — Every 15 minutes

Table 3-17 Memory I/O Statistics Summary Metrics

Metric	Description and User Action
Write Pending Tracks	Total write pending track count, not yet destaged to disk.
Prefetch Tracks	Total prefetched tracks.
Destaged Tracks	Total number of destage tracks.
Write Pending Max Percentage	Total number of write pending tracks.

3.18 Memory I/O Statistics Details Metrics

Default Collection Interval — Every 15 minutes

Table 3-18 Memory I/O Statistics Details Metrics

Metric	Description and User Action
Write Pending Tracks	Tracks that are not yet written to the hypers.
Prefetch Tracks	Tracks that have been prefethced from the hypers.
Destaged Tracks	Tracks that have been destaged to the disks.
Write Pending Max Percentage	Percentage of write pending tracks.

3.19 Cache Statistics Metrics

This metric is used to monitor the cache statistics.

Default Collection Interval — Every 15 minutes

Table 3-19 Cache Statistics Metrics

Metric	Description and User Action
Read Misses	Performance of the Cache can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are Cache hits/misses, Disconnects per second.
System Write Pending Disconnects	System/Device disconnect rate (disconnects per second) due to write pending limit.
Device Write Pending Disconnects	System/Device disconnect rate (disconnects per second) due to write pending limit.

3.20 Port Statistics Metrics

This metric provides information to monitor port statistics.

Default Collection Interval — Every 15 minutes

Table 3-20 Port Statistics Metrics

Metric	Description and User Action
I/Os Per Second	Performance of the Frontend Ports can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are Director no. Port Number, I/O sec, KBs Per sec. Operator - > The consecutive number of occurrences preceding notification - 1 For this metric you can set different warning and critical threshold values for each unique combination of "Front End Director" and "Port Number" objects. If warning or critical threshold values are currently set for any unique combination of "Front End Director" and "Port Number" objects, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each unique combination of "Front End Director" and "Port Number" objects, use the Edit Thresholds page.
IO Throughput(KB/Sec)	I/Os per second on the port. Operator - > The consecutive number of occurrences preceding notification - 1 For this metric you can set different warning and critical threshold values for each unique combination of "Front End Director" and "Port Number" objects. If warning or critical threshold values are currently set for any unique combination of "Front End Director" and "Port Number" objects, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each unique combination of "Front End Director" and "Port Number" objects, use the Edit Thresholds page.

Metric

Description and User Action

I/Os Per Second

Performance of the Frontend Ports can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are Director no. Port Number, I/O sec, KBs Per sec.

Operator - >

The consecutive number of occurrences preceding notification - 1

For this metric you can set different warning and critical threshold values for each unique combination of "Front End Director" and "Port Number" objects. If warning or critical threshold values are currently set for any unique combination of "Front End Director" and "Port Number" objects, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each unique combination of "Front End Director" and "Port Number" objects, use the Edit Thresholds page.

IO Throughput(KB/Sec)

I/Os per second on the port.

Operator - >

The consecutive number of occurrences preceding notification - 1

3.21 Disk Statistics Details Metrics

Performance of all the disks can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are Disk Name, I/O Reads/Writes Per Sec, and KB Read/Write Per sec.

Default Collection Interval — Every 15 minutes

Table 3-21 Disk Statistics Details Metrics

Metric	Description and User Action
Disk Reads Per Second	I/O Reads per second on the disk.
Disk Writes Per Second	I/O Writes per second on the disk.
Disk Read Throughput (KB/Sec)	Reads Per Second on the disk.
Disk Write Throughput (KB/Sec)	Writes Per Second on the disk.

3.22 Disk Statistics Summary Metrics

Overall performance of all the disks can be monitored using this metric. The metric runs frequently and fetches the performance data. Some of the performance data monitored are Disk Name, I/O Reads/Writes Per Sec, and KB Read/Write Per sec.

Default Collection Interval — Every 15 minutes

Table 3-22 Disk Statistics Summary Metrics

Metric	Description and User Action
Total Disk Reads Per Second	Total reads per second on all the disks. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Disk Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Writes Per Second	Total writes per second on all the disks. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Disk Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Read Throughput (KB/Sec)	Total reads per second on all the disks. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Disk Read Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.
Total Disk Write Throughput (KB/Sec)	Total writes per second on all the disks. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Total Disk Write Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Symmetrix ID" object. If warning or critical threshold values are currently set for any "Symmetrix ID" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Symmetrix ID" object, use the Edit Thresholds page.

3.23 Disk Statistics Details Metrics

Default Collection Interval — Every 15 minutes

Table 3-23 Disk Statistics Details Metrics

Metric	Description and User Action
Disk Reads Per Second	Reads per second on the disk. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Disk %disk_name% Reads Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Name" object. If warning or critical threshold values are currently set for any "Disk Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.
Disk Writes Per Second	Writes per second on the disk. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Disk %disk_name% Writes Per Second is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Name" object. If warning or critical threshold values are currently set for any "Disk Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.
Disk Read Throughput (KB/Sec)	Read throughput of the disk. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Disk %disk_name% Read Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Name" object. If warning or critical threshold values are currently set for any "Disk Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.
Disk Write Throughput (KB/Sec)	Write throughput of the disk. Operator - > The consecutive number of occurrences preceding notification - 1 Error message - Disk %disk_name% Write Throughput (KB/Sec) is %value%, crossed warning (%warning_threshold%) or critical (%critical_threshold%) threshold. For this metric you can set different warning and critical threshold values for each "Disk Name" object. If warning or critical threshold values are currently set for any "Disk Name" object, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.

3.24 Events Metrics

This metric provides information about the events occurring on the Symmetrix Array.

Default Collection Interval — Every 5 minutes

Table 3-24 Events Metrics

Metric	Description and User Action
Detected Date/Time	Date and time of the occurrence of the event.
Symmetrix Event	The Symmetrix events are collected by the script. Events like director dead, port inactive, disk pulled out are reported by the metric, between the time intervals specified. Operator - = The consecutive number of occurrences preceding notification - 1 Default Warning Threshold - Warning Default Critical Threshold - Error Error message - Director: %director% Source: %source% %category% - %description% (Error Code: %numeric_code%) detected at %date_time%. Alert Text - Once an alert is triggered for this metric, it must be manually cleared. For this metric you can set different warning and critical threshold values for each unique combination of "Director", "Source", "Category", and "Error Code" objects. If warning or critical threshold values are currently set for any unique combination of "Director", "Source", "Category", and "Error Code" objects, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.
Description	Description of the event that occurred.

Metric

Description and User Action

Detected Date/Time

Date and time of the occurrence of the event.

Symmetrix Event

The Symmetrix events are collected by the script. Events like director dead, port inactive, disk pulled out are reported by the metric, between the time intervals specified.

Operator - =

The consecutive number of occurrences preceding notification - 1

Default Warning Threshold - Warning

Default Critical Threshold - Error

Error message - Director: %director% Source: %source% %category% - %description% (Error Code: %numeric_code%) detected at %date_time%.

Alert Text - Once an alert is triggered for this metric, it must be manually cleared.

For this metric you can set different warning and critical threshold values for each unique combination of "Director", "Source", "Category", and "Error Code" objects. If warning or critical threshold values are currently set for any unique combination of "Director", "Source", "Category", and "Error Code" objects, those thresholds can be viewed on the Metric Detail page for this metric. To specify or change warning or critical threshold values for each "Disk Name" object, use the Edit Thresholds page.

Description

Description of the event that occurred.

3.25 Frontend Director LUN Mapping Metrics

This metric provides information about the hyper to frontend director mapping details. Some of the other details that are collected are port number, device name, symbolic ID of the hyper, and physical device name of the hyper.

Default Collection Interval — Every 24 hours

Table 3-25 Frontend Director LUN Mapping Metrics

Metric	Description and User Action
Symbolic ID	Symbolic ID of the hyper.
VBus ID	Vbus ID of the hyper.
Target ID	Target ID of the hyper.
LUN ID	LUN ID of the hyper.
Physical Device Name	Physical device name of the hyper.