Filter
Top Products
• Change or delete logical unit number (LUN) mappings on a virtual disk holding a reservation.
• Delete virtual disk groups or virtual disks that have any reservations.
To determine which virtual disks have reservations, run the following command:
show (allVirtualDisks | virtualDisk
[virtualDiskName] | virtualDisks [virtualDiskName1
... virtualDiskNameN]) reservations
To clear persistent virtual disk reservations, run the following command:
clear (allVirtualDisks |
virtualDisk[virtualDiskName] | virtualDisks
[virtualDiskName1" ... "virtualDiskNameN])reservations
Synchronizing RAID Controller Module Clocks
To synchronize the clocks on both RAID controller modules in a storage array with the host clock, run
the following command:
set storageArray time
Locating Physical Disks
At times, you might need to locate a specific physical disk. In very large storage array configurations, this
can sometimes be awkward. If you need to locate a specific physical disk, turn on the indicator LED on
the front of the physical disk. To turn on the indicator LED on a physical disk, run the following
command:
Performance Tuning
Over time, as a storage array exchanges data between the hosts and physical disks, its performance can
degrade. Monitor the performance of a storage array and make adjustments to the storage array
operational settings to improve performance.
Monitoring Performance
Monitor the performance of a storage array by using the save storageArray performanceStats
command. This command saves performance information to a file that you can review to determine how
well the storage array is running. The following table lists the performance information saved to the file.
Table 14. Storage Array Performance Information
Type of Information Description
Devices Devices are:
RAID Controller
Modules
The RAID controller module in slot 0 or 1 and a
list of the virtual disks owned by the RAID
controller module.
Virtual Disk A list of the virtual disk names.
Storage Array
Totals
A list of the totals for both RAID controller
modules in an active-active RAID controller
114