Raid Migration

[trbal]

Hi
Iam currently using 1+0 (dl380) g4 How easy is it to migrate to Raid 5.

Thanx

[Mauro Rusignuolo]

yes,
you can use ACU to migrate on-line from a raid level to another.

Bye.

TJK.

[Prabhulj]

Hi,

Raid Migration from Raid 1+0 to raid 5 is possible.
I hope you either have a Smart Array 6i or 64XX controller installed.

For raid Migration,
> Add a new drive to the server
> Launch ACU and confirm the newly added drive is recognised by the controller.
> Select the Logical Drive you want to Migrate
Ex: Array A.
> Click on Migrate and choose the Raid Migration level to raid 5.

For More info, refere the ACU userguide.
Link:
http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?contentType=SupportManual〈=en&cc=us&docIndexId=179111&taskId=101&prodTypeId=329290&prodSeriesId=468780

Regards,
Prabhu

PS: If this information/solution is helpful, please assign points.

[Prashant (I am Back)]

Hi,

It is very easy to go. Just few clicks in ACU it will do it.
Refer to ACU support doc
Page 25
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00294139/c00294139.pdf

Steps:
Migrate a logical drive
This option enables you to alter the stripe size (data block size), RAID level, or both for a selected logical
drive. For some combinations of initial and final settings of stripe size and RAID level, the array must
contain unused drive space.
IMPORTANT: An array expansion, logical drive extension, or logical drive migration takes about 15
minutes per gigabyte, or considerably longer if the controller does not have a battery-backed cache. While
this process is occurring, no other expansion, extension, or migration can occur simultaneously on the same
controller.
1. Back up all data on the logical drive. Although migration is unlikely to cause data loss, observing
this precaution provides additional data protection.
2. Click Migrate a logical drive, and then click Begin.
3. Select the logical drive, and then click Next.
4. Select the new RAID level, and then click Next.
Only RAID levels that are possible for this configuration are shown. For example, RAID 5 is not listed
if the array has only two physical drives.
5. Select the stripe size. Only stripe sizes that are possible for this configuration are shown.



Prashant S.

[Prashant (I am Back)]

It's easy as it looks. But remember the rebuilding time when you moving from one raid type to another.

Prashant S.