Dell PowerVault MD3000i Command Line Interface Guide - Page 95
Synchronizing RAID Controller Module Clocks, Locating Physical Disks, Performance Tuning - led indicators
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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: start physicalDisk [enclosureID,slotID] blink To turn off the indicator LED after locating the physical disk, run the following command: stop physicalDisk blink 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. Maintaining a Storage Array 95