Raid 0+1 Tech on : HP Surestore Disk System 2405

[Fragon]

We bought a new HP9000 server rp5470 with 2 HDs! For disk I/O performance purpose, we want to buy an additional HP Surestore DS2405 with 8 new HDs!
We want to make every 4 disks striped, and then mirrored, can we? (We have Mirror/UX)
Do not recommend me buy another Disk System far more expensive , BUDGET LIMIT!

Another issue: If I use VxVM instead of LVM , will the performance be improved much?

Thanks in advance!

-ux

[Steven E. Protter]

mirror/ux will do raid one on a volume presented to it that is raid 0 on the surestore.

The mirroring in VxVM only works on root vg without spending more money.

I've not heard reports of massive performance boots with VxVM over LVM.

SEP

[Gerhard Roets]

Why not look at a ds2300 with a netraid 4si ? This should give you what you want on a hardware level. Raid 10 on HW.

Just a side thought.

Regards
Gerhard

[Bill Costigan]

You can do both striping and mirroring with LVM. Put 4 disks in one PVG and the other 4 in another PVG. Create the LV on one PVG using either extent base striping [-D] or strip scheduling [-i]

Then simply create a mirror with lvchange using the other PVG

[Leif Halvarsson_2]

Hi,
The ds2405 is a Fibre Channel disk system. Do you have FC-HBA in your server ? If not, it is a better idea to buy a SCSI disk system (ds2300) and a RAID adapter (and use hardware RAID 1+0).