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emc cx-300系列disable cache  

2010-05-28 08:37:04|  分类: 存储 |  标签: |举报 |字号 订阅

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Procedure created on:  6/1/07 11:09 < xmlnamespace prefix ="o" ns ="urn:schemas-microsoft-com:office:office" />

 

SITE AND CONFIGURATION INFORMATION:

 

Installation/Upgrade Information:

Change Control Ref Number:

   

Installing or Upgrading CE:

 

Installation/Upgrade Date/Time:

(EST)

 

Customer and Site Information:

Customer Name:

 

Site ID/Region or Country:

|

Lab Contact:

 

Contact Phone Number:

 

Site Address:

 

CSI Service Request (SR) Number:

 

 

Array Information:

Serial Number of Array(s):

 

 

 

 

 

 

 

 

 

Software in configuration

Revision

FLARE/Access Logix

 

Navisphere Agent

 

Navisphere Manager

 

PowerPath

 

ATF/CDE

 

VxVM DMP

 

SnapView

 

MirrorView/A

 

MirrorView/S

 

SAN Copy/SAN Copy/E

 

CLARalert/OnAlert

 

Admsnap

 

Admhost

 

EMC Replication Manager (ERM)

 

 

 

REPORTING PROBLEMS:

 

If you find any errors in this procedure or have comments regarding this application, please send email to CLARiiONProcedureGenerator@emc.com.  Be sure to reference any modules by the correct filename (located to the right of the module title).

 

 

CONFIGURATION DESCRIPTION:

 

·         Product:   CX-Series (CX200-CX700) *

·         Activity:   Disable Write Cache

·          

·         * Unless otherwise noted, this procedure uses the term "CX-Series" to refer to CX3-80, CX3-40-Series, CX3-20-Series, CX3< xmlnamespace prefix ="st1" ns ="urn:schemas-microsoft-com:office:smarttags" />-10c, CX700, CX600, CX500-Series, CX400, CX300-Series, and CX200-Series.      

 

 

WARNINGS:

q             

 

 

TABLE OF CONTENTS:

To link immediately to a specific page within this procedure, position the cursor over the page number on the right and click.

< xmlnamespace prefix ="v" ns ="urn:schemas-microsoft-com:vml" /> Denotes a checkpoint

 

·       Disabling write cache                           recah010_R001.......................................................... 2

 

 

Disabling write cache                           recah010_R001

1.         

Note the following:

 

·         Disabling write cache affects storage system performance. 

Do NOT forget to re-enable write cache after the maintenance activity!

·         It may take a while for the cache to be disabled.  You must wait for the cache to show as “Disabled” before proceeding.

·         If you are going to set the write cache to zero:

a.        Record the cache allocation so that you can reset write cache to the original allocation after the maintenance activity.

b.        You cannot set write cache to zero until the cache shows as “Disabled”.

 

P Done

?

2.         

Overview

 

You will perform the following steps:

 

·         Disable the write cache in the Array Properties Cache tab.

·         If you are going to set the write cache to zero: when cache status has changed from “disabling” to “disabled”, zero the memory assigned to write cache in the Array Properties Memory tab.  The memory cannot be changed to 0mb until cache has “disabled”.

·         Ensure that the cache has been completely “disabled”.  Confirm that the cache is DISABLED (and ZEROED) by using Navisphere CLI to check cache status.  Enter the following CLI command:

navicli –h <hostname
> getcache

?

3.         

Detailed Instructions

 

·         Right-click on array and select Properties.



·         Click on the Cache tab.



·         Uncheck the Write Cache, and click on Apply.



·         Confirm that you wish to continue with disabling write cache by clicking on Yes.



·         There is a warning that disabling cache make take some time.
Confirm that you wish to continue with disabling write cache by clicking on Yes.



·         Click on OK to continue.



·         Write cache will now show as disabled.

 

?

4.         

If you are going to set the write cache to zero:

a.        Click on the Memory tab.



b.       Drag the Write Cache Memory slider all the way to the left to set the memory to zero, and click on Apply.



c.        Confirm that you want to set the size to zero by clicking on Yes.



d.       Click on OK to continue.

 

?

5.         

Check that the cache has been completely “disabled” (and zeroed) by using Navisphere CLI to check the cache status. 

 

Enter the following CLI command:

navicli –h <SP IP address> getcache

 

CAUTION:  Ensure that the write cache status for both SP A and SP B shows as Disabled and that the write cache size for both SP A and SP B shows as zero before starting the maintenance activity.

 

 

?

6.         

After you have performed the maintenance activity, reset the cache to the previous setting (only if you set it to zero), and re-enable write cache.

 

?

 

7Table of Contents

 

 

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