From: Green, Simon (SGreen@KRAFTEUROPE.COM)
Date: Tue Nov 19 2002 - 06:06:56 EST
The SSA cabling looks OK. You should have all of the SSA cards set to
Bypass, but I expect you know that.
I don't really know enough about RAID to comment further.
Simon Green
Philip Morris ITSC Europe
AIX-L Archive at http://marc.theaimsgroup.com/?l=aix-l&r=1&w=2
AIX FAQ at http://www.faqs.org/faqs/aix-faq/
N.B. Unsolicited email from vendors will seldom be appreciated.
> -----Original Message-----
> From: Lane, Debbie [mailto:Debbie.Lane@INTERMEC.COM]
> Sent: 18 November 2002 21:42
> To: aix-l@Princeton.EDU
> Subject: SSA raid and mirror
>
>
> I have 2 SSA drawers.
> 1st drawer is:
> 7133-020 fully loaded with 4GB disk. This drawer is mirrored
> front to back,
> and at the adapter level.
>
> 2nd drawer is:
> 7133-D40 fully loaded with 36GB disk. This drawer will be raid 5.
>
> This server has 2 SSA Enhanced RAID Adapters 6215 (4N). The
> adapters do not
> have fast write cache.
> I know I will not get the full performance from the D40 on this old
> adapter.
>
> I want to mirror at the adapter level. Is this a valid configuration?
>
> Drawer 1 7133-020
> 8 to A2 ssa0
> 9 to A1 ssa0
> 1 to A1 ssa1
> 16 to A2 ssa1
>
> Drawer 2 7133-D40
> 8 to B2 ssa0
> 9 to B1 ssa0
> 1 to B2 ssa1
> 16 to B1 ssa1
>
> I do not have any experience with RAID5. I read where you
> can put 16 disk
> in one raid array. I have two possibilities:
> (1) 15 disk in one array, plus one hot spare
> (2) 2 arrays with 7 disks each, plus a hot spare for each array.
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