DS4700 Disk array controller microcode upgrade operation record

 

Project introduction :

On 10 year 3 month ,XX Urban district / state XX Branch companies have reflected that the reading speed of production data has become very slow , Performance in : The speed of extracting data from daily reports is obviously slower , Customers are slow to open the front page .

Phenomenon is : Store the alarm of battery power expiration , and DISABLE The storage of write cache and write mirror ! So the disk speed drops suddenly !

By collecting stored ASD And analyze , And with IBM800 confirm , Location is DS4700 Of FW And NVSRAM Lower version ( lower than 6.60.X.X), We need to upgrade microcode to 6.60.22.00, That is, it can solve the alarm information of the battery power expiration !

Project implementation operation process record (river Yang)

One 、   Problem identification method

clear through , Locate the fault point on the disk array ( The screening process is not the main point of this section )

1)    Log in to disk array to see :

Find the controller A, controller B All the batteries have been FAILED.

2)    adopt MEL see :

In the pop-up page :

Find the controller A, controller B All the batteries have been FAILED.

Two 、   How to confirm the expiration of battery

1)    Landing host , adopt errpt see

#errpt

8B88700A   0221144410 T H hdisk7         The power of the cache battery is 87.5% following

#errpt –aj 8B88700A

label :FCP_ARRAY_ERR16

identification :8B88700A

date / Time :     A.D. 2010 year 02 month 21 Japan   Sunday   14 when 44 branch 07 second

Serial number :           25748

Machine identification :       00013A91D600

Node identification :       DB2Server

class :             H

type :           TEMP

Resource name :         hdisk7

Resource class :         disk

The resource type :       array

Location :

U787B.001.DNWFB52-P1-C5-T1-W200B00A0B82AEB1F-L5000000000000

describe

The power of the cache battery is 87.5% following

Possible causes

Controller cache battery

Write cache is disabled

Reasons for failure

Controller cache battery

Recommended actions

Perform the problem determination process

Monitor battery status .

Detailed data

Test data

0600 0308 0000 FF00 0000 0004 0000 0000 0000 0000 0000 0000 0000 0000 7000 0600

0000 0098 0000 0000 3FD9 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

0008 3700 0000 0000 0000 0000 0000 0000 0000 5347 3734 3733 3030 3036 2020 2020

2020 0623 0500 0005 00FF FE00 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

0005 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

0000 0000 A500 4579 3032 3231 3130 2F30 3030 3632 3200 0000 0000 0000 0000 0000

0000 0000 1F49 9000 F205 3402 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000

0000 0000

explain :

errpt The alarm identifies the battery problem of the disk array !

2)    Login storage check , stay recover guru I found a battery alarm in the controller ;

Click on the stethoscope  —>  Click on VIEW

It's obvious that the battery is close to life ( Or there are enough left 100 God , They all need to be upgraded );

3)    By looking at the collection of ASD Medium profile, It can be confirmed that the battery is about to expire ;

4) The dual controller microcode of the current storage system is in 06.60.XX.XX under ;

5)    Check the write cache and write image status of the controller , Are all DISABLE state ;( When the battery is dead , Write caching and write mirroring automatically DISABLE)

View path :( The little red ball is forbidden )

6)    Check out the collection of ASD Medium event log, Make sure the battery is about to expire , No other parts FAILED;

3、 ... and 、 Conclusion on battery expiration

Problems lead to phenomena :

1) The battery is about to expire , Causes write caching to be disabled , As a result, the user production system is slow to respond ;

2) IBM reply , The controller microcode is in 06.60.XX.XX under , Its battery setting period is 3 year ; Users need to upgrade microcode to 06.60 Or more , The battery setting period is changed to 10 year ;

3) After the upgrade, if there are any parts FAILED, to IBM Report for repair and replacement .

The diagnosis is :

Upgrade the storage system controller microcode to 6.60.xx.xx above , To solve the current battery expiration problem .

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