Wierdness setting up PERC5e

Greg Dickie greg at max-t.com
Sat Jan 20 09:13:15 CST 2007


RTFM. I Should have known! ;-)
Still doesn't make sense that it works that way though...

Thanks for taking the time to explain that,
Greg


On Sat, 2007-01-20 at 09:06 -0600, Linux PowerEdge wrote:
> Greg,
> 
> Take a look at the documentation.  It does not support the "mode" in
> which you have it configured currently.
> 
> Cabling Your Enclosure for Unified or Split Mode
> http://support.dell.com/support/edocs/systems/md1000/en/HOM/operate.htm#wp1056917
> 
> 
> How you cable your enclosure to your host controller depends on the
> configuration you choose: unified or split mode.
> 
>               A unified configuration is one in which your enclosure
> is connected to one host (for example, a server with a controller
> card). In unified mode, your enclosure can be one of up to three
> enclosures daisy-chained to a single port on the controller card in
> your host server. See Figure 2-1 for a cabling diagram of a unified
> mode configuration.
> 
> 
>               A split-mode configuration is one in which your storage
> enclosure is connected to either two host controllers, or two ports on
> a single host controller. In this configuration, the drives are split
> into two groups with eight drives controlled by one host controller
> and seven drives controlled by the other host controller. See Figure
> 2-1 for a cabling diagram of a split mode configuration.
> 
> 
> 
> 
> Hope this helps.
> 
> On 1/17/07, Greg Dickie <greg at max-t.com> wrote:
> >
> > Hi,
> >
> >   I'm setting up a PE2950 with a PERC5e connected to an MD1000 populated
> > with 5 750G SATA drives. I have connected 2 SATA cables between the
> > PERC5 and the MD1000 (for redundancy purposes). I configured 1 big vdisk
> > using OMSA (omconfig) and everything looked great until I rebooted the
> > machine. Then the controller started complaining about detecting
> > "foreign" disks... OK but I would have expected that omconfig would have
> > updated the config on the controller as well. So I did "omconfig storage
> > controller action=importforeignconfig" and got my filesystems back
> > (phew!). Today I noticed that OMSA was still complaining about a foreign
> > config. Running "omreport storage controller" did not reveal anything
> > unusual. I did notice, however that I see all 5 drives on both channnel
> > 0 and channel 1 as I would expect. Now the fun part. I ran
> > importforeignconfig again and it did it imported the same vdisk once
> > again (same name, size,etc) AND started to initialize it! I suppose its
> > because it sees the drives on both channels but it should know that
> > those drives are already managed. Does anyone have any experience with
> > this? It it caused by the 2 SAS connections?
> >
> > Sorry for the rambling,
> > thanks,
> > Greg
> >
> > --
> > Greg Dickie
> > just a guy
> > Maximum Throughput
> >
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> >
-- 
Greg Dickie
just a guy
Maximum Throughput



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