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SMART 5300: Extended existing logical drive in RAID-5

Posted on 2003-10-28
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Last Modified: 2010-04-03
Hi
Anybody having experience of this ?

Compaq SMART 5300 controller with 3 existing disks in RAID 5 config.
Configured in one array and one logical drive.
Now I want to expand the existing drive with one more disk.

Compaq Array configuration Utility (ACU) has fine (?) functions for this.
1. Expand existing array with new disk.
2. Extend existing logical drive with new disk space.
But !!..... when step 2 is selected a big yellow warning is issued ! :

"...You have requested to perform extension of one or more logical drives on this controller. Extension is not currently supported in Windows 2000. If the operation system for any logical is Windows 2000, please do not attempt to use this feature, as data loss will occur....."

Then I cancel the operation !

Note: The windows operating system is NOT stored on this logical drive. This drive is only for data storage.

HP/Compaq recommende solution for this, is to re-create a new big drive with all four disks and restore the data from tape-backup !

Has anybody tried a more slimmer and faster way to do this ?

Is there a option to expand the existing array (in ACU) and expand the logical drive with some 3rd-party software, like PQ-ServerMagic ?

Config:
Win 2000 Server SP4. (2x 18GB RAID-1. On separate raid controller and partition)
Compaq Proliant 350 G2
SMART-5300 Controller Firmware 3.40 Rev A
RAID-5 3x72GB SCSI + 1 72GB added  - this controller for datastorage.
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Question by:janostlund
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andyalder earned 250 total points
ID: 9649573
I normally just use option 1, expand the existing array. Then you can use diskpart from www.microsoft.com/windows2000/techinfo/reskit/tools/new/diskpart-o.asp to increase thhe size of the volume.

The warning is for dynamic disks, if you have dynamic disks then expand or extend can lead to data corruption, the problem is fixed in the latest controller firmware which you can download from Compaq http://h18007.www1.hp.com/support/files/storage/us/locate/99_1237.html

This article describes the problem and why the warning message is there.

http://wwss1pro.compaq.com/support/reference_library/viewdocument.asp?countrycode=1000&prodid=29&source=EM000915_CW01.xml&dt=3&docid=2996

 
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Author Comment

by:janostlund
ID: 9823678
To andyalder

Thanks for your reply,

I've checked with HP the last article you mentioned and they say it will work with my config to extend the logical drive on the fly.

I'll have a go with that solution.
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