Maintaining a Storage Array
117
The
set virtualDisk c
ommand enables a media scan for the virtual disk.
The following syntax is the general form of the command:
set (allVirtualDisks | virtualDisk
[
virtualDiskName
] | virtualDisks [
virtualDiskName1
... virtualDiskNamen
] | virtualDisk <
wwid
>)
mediaScanEnabled=(TRUE | FALSE)
The
set storageArray
command defines how frequently a media scan is
run on a storage array. The following syntax is the general form of the
command:
set storageArray mediaScanRate=(disabled | 1-30)
Running a Consistency Check
Consistency checks are performed when media scans are run, if consistency
check is enabled on the virtual disk. (See "Running a Media Scan" on
page 115 for an explanation about setting up and running media scans.)
During a consistency check, all data blocks in a virtual disk are scanned, and
deteriorated data is corrected. The method of correction depends on the
redundant array of independent disks (RAID) levels:
• RAID 5 and RAID 6 virtual disks — Consistency is checked and repaired.
• RAID 1 virtual disks — The data is compared between the mirrored
physical disks, and data inconsistencies are repaired.
• RAID 0 virtual disks — No redundancy exists.
Before attempting a consistency check, you must enable the process with the
set virtualDisk
command, which uses the following general form:
set (allVirtualDisks | virtualDisk
[
virtualDiskName
] | virtualDisks [
virtualDiskName1
... virtualDiskNameN
] | virtualDisk <
wwid
>)
consistencyCheckEnabled=(TRUE | FALSE)
book.book Page 117 Wednesday, June 8, 2011 12:20 PM
Summary of Contents for PowerVault MD3600f Series
Page 1: ...Dell PowerVault Modular Disk Storage Arrays CLI Guide ...
Page 44: ...44 About the Script Commands ...
Page 114: ...114 Using the Remote Replication Premium Feature ...
Page 311: ...Script Commands 311 ...
Page 312: ...312 Script Commands ...
Page 318: ...318 Sample Script Files ...
Page 328: ...Index 328 ...