NEC Express5800/R110f-1E User Manual download pdf (Page 91)

Checking Logical Drive Consistency

The Consistency Check function checks the consistency between the data in the data area of a Logical Drive and the

parity. The Universal RAID Utility can start or stop Consistency Check and change the priority in which Consistency

Check is executed.

The Consistency Check is effective next to Patrol Read to find failures including Physical Device medium error early.

Execute Consistency Check periodically if the RAID Controller does not support Patrol Read or the Patrol Read is

disabled. If the Universal RAID Utility is installed, routine execution of the Consistency Check is set for RAID Controllers

not supporting Patrol Read.

Starting or stopping the Consistency Check is enabled both in the Standard Mode and

Advanced Mode. The function of changing the priority at which the Consistency Check is

executed is available only in the Advanced Mode.

The Consistency Check can be executed only for Logical Drives with [Status] being [Online].

The Consistency Check cannot be executed for Logical Drives with RAID Level being RAID 0.

Executing Consistency Check Manually

Consistency Check is executed in Logical Drives. The procedure of starting Consistency Check is described

below.

RAID Viewer

Step 1 Start the RAID Viewer. Click a Logical Drive on the Tree View.

Then click [Start Consistency Check] on the [Control] menu.

Step 2 After Consistency Check is started, the

progress of the Consistency Check appears on the

Operation View. At the completion of the Consistency

Check, [Status] on the Operation View is changed to

[Completed].

raidcmd

Step 1 Execute "cc" command with -op option

and the following parameters.

-c : Number of the RAID Controller containing the Logical

Drive for which Consistency Check is executed (If specify

"all" as parameter, the targets are all Logical Drives of all

RAID Controllers)

-l : Number of the Logical Drive for which Consistency

Check is executed (If specify "all" as parameter, the targets are all Logical Drives of RAID Controllers specified by -c)

-op : Specify "start" to start Consistency Check

To execute Consistency Check for all Logical Drives of a RAID Controller which not support Patrol Read or of which the

Patrol Read is disabled, use "ccs" command of the raidcmd.

raidcmd ccs

For the RAID Controller which support Patrol Read or of which the Patrol Read is enabled,

"ccs" command is actually not executed even if you execute it.

LD #

2 : Consistency Check (Running 30%)

RAID Controller #1

> raidcmd oplist

> raidcmd cc -c=1 -l=2 -op=start

1 2 ... 86 87 88 89 90 91 92 93 94 95 96 ... 134 135

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NEC Express5800/R110f-1E User Manual Page 91

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