NEC Express5800/R110f-1E Manual do Utilizador descarregar pdf (Página 98)

Changing Cache Mode of Logical Drive

You can change the cache mode of Logical Drive.

The range of change differs depending on the type of the RAID Controller.

RAID Controller Changed cache Range of change

Onboard RAID Controller (LSI

Embedded MegaRAID)

Hard Disk Drive All the Logical Drives in a single

Disk Array.

Option and Internal RAID Controller

(N8103-128/G128/134/135)

RAID Controller All the Logical Drives in a single

RAID Controller.

Option and Internal RAID Controller RAID Controller (You can change each of

Logical Drive.)

Only the Logical Drive selected

The setting of the cache mode of Logical Drive influences the performance of server. Please

change carefully.

Setting cache mode

The procedure of setting cache mode of Logical Drive is described below.

Changing cache mode is available only in the Advanced Mode.

RAID Viewer

Step 1 Start the RAID Viewer. Click the Logical Drive on the Tree View. Then click [Properties] on the [File] menu.

Step 2 Click the [Options] tab in the [Logical

Drive Properties] dialog box. Change the value of

[Cache Mode (Setting)] to [Auto Switch], [Write Back],

or [Write Through]. Click [OK] or [Apply].

raidcmd

Stripe Size : 64KB

Cache Mode (Setting) : Write Back

Cache Mode (Current) : Write Back

Type : Logical Drive

Status : Online

RAID

Level : RAID 5

Capacity : 20GB

ID : 0

Disk Array Information : 1 (order 1/1)

> raidcmd optld -c=1 -l=1 -cm=writeback

> raidcmd property -tg=ld -c=1 -l=1

RAID Controller #1 Logical Drive #1

Step 1 Execute "optld" command with -cm option

and the following parameters.

-c : Number of the RAID Controller for which Cache Mode

change

-l : Number of the Logical Drive for which Cache Mode

change

-cm :Select auto, writeback, or writethru to change the

Cache Mode.

Ex. Set the Cache Mode of the Logical Drive (RAID

Controller number:1, Logical Drive number: 1) to

Write Back

raidcmd optld -c=1 -l=1 -cm=writeback

Step 2 The property of the RAID Controller changes as follows when the setting has been changed successfully.

[Cache Mode (Setting)]: Cache Mode after change

Check the execution result by using "property" command.

-tg : Specify rc to browse the property of Logical Drive

-c : The number of the RAID Controller in which the Logical Drive

-l : The number of the Logical Drive

Ex. Browse the property of Logical Drive (RAID Controller Number: 1, Logical Drive: 1)

raidcmd property -tg=ld -c=1 -l=1

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 134 135

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