topic Re: Raid1+0 Migration to RAID5 in HPE ProLiant Servers (ML,DL,SL)

Raid1+0 Migration to RAID5

ahmedsm — Wed, 02 Apr 2008 11:21:47 GMT

Hello, i have HP Proliant ML350, with Smart Array 641 Controller, i have 1 Logical drive arround 10GB on Array A RADI1+0 and 2 logical drives 300GB in Array B RAID5.

My system is on the first logical drive Raid1+0 and it is running out of space, i bought a new disk 300GB and inserted, i want to use that disk to expand my system disk which is RAID1+0, now the Array Configuration Utility suggest that i migrate RAID1+0 to RAID5, how can i do such migration safly? is there a clear procedure to follow? i need to add more space to my system disk urgently, please help. thank you

Re: Raid1+0 Migration to RAID5

ahmedsm — Wed, 02 Apr 2008 13:22:29 GMT

Please see the message displayed by the ACU attached here.

Re: Raid1+0 Migration to RAID5

YAQUB_1 — Wed, 02 Apr 2008 13:55:33 GMT

Hi Ahmedsu,

I understand Ur current station; please do not hurry anything without backup (valuable data).

Jest follows Array Configuration Utility Migrate process.

Hope for the Best,

Thanks--Yaqub
HP Support!!!

Re: Raid1+0 Migration to RAID5

Blazhev_1 — Wed, 02 Apr 2008 15:47:12 GMT

Hi,

everything is normal.
You have even number, added another HDD and now you can't make an 1+0 logical drive...

As for the migration, the controller don't need additional prerequisite(like BBWC) to make an array expansion and log. drive extension, you can go ahead...There is always a 1% risk of something going wrong, but in theory it will do it , you don't have to worry

Pac

Re: Raid1+0 Migration to RAID5

ahmedsm — Thu, 03 Apr 2008 06:16:31 GMT

Thank you guys, the migration to RAID5 was successful and i could expand.

Just one small thing, the additional HDD that i have has 300GB, i could only expand the Logical HDD in Array A to 17GB and still have more than 200GB unused space, i donâ t know why i am not able to add more space to the logical Driver in A, is it because that the initial drive size was 17GB?

Thank you again.

Re: Raid1+0 Migration to RAID5

Terence Tsao — Thu, 03 Apr 2008 06:40:09 GMT

Hi ahmedsm,

After migrate raid_1to raid_5,you need to extend logiacl disk_1 space, then in windows disk manager, you will find addition free space from extendind.
But, system partition can't on-line extend with diskpark.exe. You must using ghost or partition magic to perform off-line extend partition size.

regards.
Terence

Re: Raid1+0 Migration to RAID5

ahmedsm — Thu, 03 Apr 2008 06:57:22 GMT

Hello Terance, thank you for your quick response, please have a look on the attached screen shot for ACU, as you can see i cannot go farther than 17GB with that logical drive, as for the partition tools, i use Acronis Disk Director server.

Re: Raid1+0 Migration to RAID5

ahmedsm — Thu, 03 Apr 2008 07:04:00 GMT

Ok there is a mistake the size that i was viewing is just 244MB not GB, so i think the expand wasnt successful, i had a look on the server now and all the HDD's are blinking RED, is a reboot after the migration to RAID5 required? please advise. thank you

Re: Raid1+0 Migration to RAID5

ahmedsm — Thu, 03 Apr 2008 07:45:28 GMT

Now everything is stable, just can't show up the 300GB additional except in the ACU.

Re: Raid1+0 Migration to RAID5

rheiden — Thu, 03 Apr 2008 16:16:09 GMT

The raid 5 array wil only use 9.1 GB of your 300GB drive because the other drives in the array are that size.

Otherwise it would be impossible to do the raid 5 redundancy wouldn't it:)

Re: Raid1+0 Migration to RAID5

ahmedsm — Thu, 03 Apr 2008 16:24:13 GMT

I understand rheiden, thank you.