RAID-10 and Volumes

[AndydnA]

You must have a minimun of 4 disks for etch VD for RAID-10.
Have you 16 disks on a 2950?!?!? I think you must use a simple RAID-1  
with 3 VD (n.2 3,5" disks etch) or  with 4 VD (n.2 2,5" disks etch),  
but this is stupid. It's better choice a different VD and RAID type.
Why you don't create a single VD for system with different partitions?
Or why you don't create a VD for (boot, root, var, etc.) and another  
VD for both data?

Look at this:

http://www.dell.com/downloads/global/products/pvaul/en/PERC6_PerfWP_WMD1120.pdf

There are many way to do this, all depends of type of your server and  
of the number of disks you have into your 2950.
Remenber that on a Perc 5/6 ctrl the performance of the RAID-10 is  
better and safe than RAID 5.
If you have only 6 o 8 disk, for performance and safe I suggest one of  
the next configuration:

with 6 (3,5") disk
a single VD of 5 disks in RAID-5 and 1 spare
a single VD of 4 disks in RAID-10, 1 spare disk and 1 extra disk.

with 8 (2,5") disk
a single VD of 7 disks in RAID-5 and 1 spare
a single VD of 6 disks in RAID-10, 1 spare disk and 1 extra disk.

AndydnA


On Dec 30, 2008, at 10:58 PM, Victor Hugo dos Santos wrote:

> Hello,
>
> I have a PE2950 with PERC 6/I and 6 disks.
>
> well, before I have a big RAID-10 volume with all space disk.
> but, now I need create 4 volume in RAID-10.
>
> VD-1 = 5G - /boot
> VD-2 = 20G - /
> VD-3 = 500G - /data1
> VD-4 = 500G - /data2
>
> but, BIOS RAID Setup not allow create 4 volumes ???
>
> why ???
> alternatives ??
>
> thanks
>
> -- 
> -- 
> Victor Hugo dos Santos
> Linux Counter #224399
>
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