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
8B88700A 0221144410 T H hdisk7 The power of the cache battery is 87.5% following
#errpt –aj 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
The power of the cache battery is 87.5% following
Controller cache battery
Write cache is disabled
Reasons for failure
Controller cache battery
Perform the problem determination process
Monitor battery status .
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
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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