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upgrading disks on a HP Proliant ML570

Posted on 2004-08-02
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Last Modified: 2012-08-14

Current Array A of 3 X 36 (Raid 5 scsi ids 0;0, 0;1 0;2) Logical drive 1
New array B of 3 X 72  (Raid 5 scsi ids 0;3, 0;4 0;5) Logical Drive 2
Both arrays controlled by Smart Array 431
Would eventually remove current Array A after the data migration to Array B is completed.

Logical Drive 1 has 3 partitions: Compaq System partition, C 7.5 GB (4 GB used) and D (about 62 GB, 50 GB used)

Logical drive 2 is about 130 GB total size.

What would be recommended way to transfer the C and D drive's data to the new Logical drive?
I know that I have to backup and restore for data in D drive, anyone tried to use ghost to image c drive and ghost image back to new logical drive and then bootup from the new logical drive.
(using ghost 7.5, partition to Image of  C drive (LDrive 1), when tried to bring image back, could only use Image to Disk so now Logical drive 2 contains only files from C drive)

How would the new boot.ini on the logical drive 1 look like? (I still need to use the D drive from Logical drive 1, before I can transfer to LDrive2)
Original
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(2)\WINNT
[operating systems]
multi(0)disk(0)rdisk(0)partition(2)\WINNT="Microsoft Windows 2000" /fastdetect

New boot.ini from Logical Drive 1 will be like below? (correct or not?)
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(1)partition(1)\WINNT
[operating systems]
multi(0)disk(0)rdisk(1)partition(1)\WINNT="Microsoft Windows 2000" /fastdetect
Thanks.
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Question by:mike_ca
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2 Comments
 
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by:
ChipM0nk JG earned 750 total points
ID: 11691879
1) Recommend that your new RAID is also broken into a system and a data partition.
2) Ghost is not well supported on RAIDs and is not a recommended solution.
3) Backup and restore is the best way to rebuild on a new raid.  I would -
     - Make a full system backup of the original RAID system partition
     - Make a full backup of the original RAID data partition
     - Remove the original RAID disks without breaking the RAID or destroying data
     - Partition the new RAID and assign it to disks C: and D:
     - Perform full recovery onto your new disks.  If you have a backup solution that makes a boot CD for system recovery, this is easy - otherwise, you need to install the base OS and your backup software and then perform the full system restore.

Gotcha: Pay attention to the physical and logical block size when you format the RAID, this has a HUGE impact on performance and you only get one chance to get it right.  Normally this is condigured in the RAID controller (physical) and in your registry (logical).

4) If you don't need to remove the original RAID to install it elsewhere, the easiest solution:
   - is to keep the current system drive and just add the new raid as the next available drive letter.  
   - Transfer the data to the new RAID
   - Swap drive letters (using disk administration) so that the new data partition is D: and the old data partition is 'X:' (something else).  
   - Wipe and recover your 60Gb partition for other use - like storing your workstation install media.
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LVL 2

Author Comment

by:mike_ca
ID: 11699939
Thanks for reply.
In worse case scenario, I have to go back to my original disks.
" - Remove the original RAID disks without breaking the RAID or destroying data"
I assume that you have quite some experience with Compaq/HP Smart Array raid controllers.
So do I have the save the Array configuration on a floppy? Does it mean that if I put back the orginal and restore back the array configuration, the original logical drive of raid 5 will be restored and I will see my original C & D partitions? Once I have this figured out, I'll be set. Thanks again.
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