RAID 0+1 on DL320 G5p

[dlgeorge]

Hi,

Is it possible to configure a RAID config of 0+1 on a DL320 G5p with the following spec:

intel 82801IR SATA host controller
HP SmartArray E200/128 BBWC Controller
HP HBA SAS-SATA 4x1LN Cable Kit
4x500GB SATA HDD

Do I have the right controllers?
Do I need any specific software?

Has anyone out there done this before?

[Frank_W]

Hi,

according to this site is is possible to use RAID 1+0:

http://h18004.www1.hp.com/products/servers/proliantstorage/arraycontrollers/smartarraye200/

You dont need any software to use the controller, but the "HP array configuration utility" is a good tool to manage your controller, while the Server is online.

[dlgeorge]

Hi Frank,

Thanks for your reply.

A little background for you. I intend to use the server as a Centralized Ghost Image Management and Centralized Anti Virus Management Server

I was looking for a 0+1 Raid configuration which should give me striping over 2 HDD which is then mirrored over another 2 HDD.

Where as the 10 Raid configuration is mirrored over 2 HDD which is then stripped over another 2 HDD.

The reason I have gone for a 0+1 config is because I have been lead to believe that the raid 0 will give me higher data transfer rate than raid 1, and using the raid 1 as a form a backup to the other HDD will give me a little data reliability.

But do please correct me if think I talking rubbish or if you have a better solution?

[Patrick Terlisten]

Hello,

don't care about it. If you want to stripe, and then mirror the drives, use Software-RAID or anything else. Die Smart Array will do a RAID 1+0 and you don't have any choice to tell him, which drives should be paired or striped. This is done by the controller.

Just don't think about it. A RAID 0+1 is maybe a bit faster, but RAID 1+0 is more secure, cause in a case of a disk failure, only one disk must be mirroed, not the hole stripeset.

Furthermore is the term "RAID 1+0" a little bit confusing: If you put only two disks in an array and you create a logical drive with a RAID 1+0, it's a RAID 1, but the Smart Array will call it RAID 1+0. If you put four disks in an array, the controller will began to build a real RAID 1+0.

Best regards,
Patrick