RAID-10 on PE2850

David Hubbard dhubbard at dino.hostasaurus.com
Wed May 3 22:37:51 CDT 2006


Hit the space twice to select drives 0 and 1, hit enter
to end (just once), hit space twice to select drives 2
and 3, hit enter.  Then I believe it's F10 to set up the
logical drive and you'll set it as raid one and it should
indicate that it has two stripes or something along those
lines.

David 

> -----Original Message-----
> From: linux-poweredge-bounces at dell.com 
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of Lutz Birkhahn
> Sent: Wednesday, May 03, 2006 11:19 PM
> To: linux-poweredge at dell.com
> Subject: RAID-10 on PE2850
> 
> Before I start banging my head against the wall... Does anybody have a
> tip how to configure 4 drives on a PE2850 for RAID-10 or 1+0 
> or something
> like that?
> 
> I spent the most part of today playing with the RAID BIOS program and
> reading tons of emails saying that others do it every day, but I still
> can't figure it out how to do it (I've configured many of 
> these machines
> with RAID-1 or RAID-5 before, that works fine). From what I 
> read on the
> list it seems you need to start with 2 RAID-1 arrays and then somehow
> put them into the same Span (i.e. striping them)?
> 
> I tried all kinds of variations, like selecting all 4 of the 
> drives and
> build an array out of those (only offers RAID-0 or RAID-5)...
> 
> Do you need a split backplane for RAID-10?? (we've ordered all of our
> machines with the 1x6 HD Backplane)
> 
> These are the steps I've done so far:
> 
> BIOS, hit ^M to enter RAID settings
> - Configure -> New Configuration (all 4 drives show up on Channel 0)
> - Select (with Space key) the first 2 drives (A00-00 and A00-01)
> - hit Enter twice, shows the box "Select Configurable Arrays", only
>   option I can select is A00: Span-1 (I tried not selecting it, but
>   then I cannot continue; also didn't find any way to change this
>   string).
> - F10 (Configure), it shows:
> 
>    LD  RAID   Size    #Stripes   StpSz   Drive-State
>     0   1    69880MB      2      64KB    OPTIMAL
> 
> - The RAID type field only offers RAID-0 or RAID-1 (no RAID-10 or so)
>   so I keep it at RAID-1
> - There is a line "Span = NO", but I cannot change it (when I 
> hit Enter
>   it says "Not An Option Item. Press Any Key To Continue")
> - So I hit Enter on the "Accept" field and have 1 RAID-1 array:
> 
>    RAID Ch-0                     RAID Ch-1
>    ------------------------------------------------
>    0: ONLIN A00-00
>    1: ONLIN A00-01
>    2: READY
>    3: READY
> 
> How do I proceed from here, or is this already wrong??
> 
> I tried adding a 2nd RAID-1 array just like the first one, called A01,
> but at the "Select Configurable Array" it again only had one option,
> "A01: Span-1", and I ended up seeing 2 disks in Linux (sda and sdb),
> which is not what I want...
> 
> In case it matters, the System BIOS is A02, Version H430 (Feb 
> 25, 2005),
> FW 521S.
> 
> Chris Purcell wrote a while ago:
> > from the Main Menu:
> > Select Configure,
> > Select View/Add,
> > Arrow down to your drive(s),
> > Select them using the spacebar,
> > When drive selection is finished, press Enter,
> > Now hit F-10,
> > If you aren't creating a Raid10, Raid50, etc, just a normal raid0,
> > raid1, or raid5, hit spacebar, then F-10 again,
> 
> OK, but what *if* I do want to create a Raid10, Raid50, etc.??!
> 
> TIA for any help or consolation...
> 
> /lutz
> 
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