PERC5 - MegaRaid-SAS problems..

Patrick_Boyd at Patrick_Boyd at
Tue Oct 17 09:34:36 CDT 2006

You can use either LSI or Dell utilities to monitor the SMART status of
the disks.

Patrick Boyd
Dell Storage Software Engineer

-----Original Message-----
From: linux-raid-owner at
[mailto:linux-raid-owner at] On Behalf Of Gordon Henderson
Sent: Tuesday, October 17, 2006 5:45 AM
To: linux-poweredge-Lists; linux-raid at
Subject: Re: PERC5 - MegaRaid-SAS problems..

For anyone who cares about my saga so-far ;-) ...

I got physical access to the unit this morning and setup the drives as
15 RAID-0 Logical drives and booted up Linux, and it then attached all
the drives in the usual way.

And I can see all 15 drives. So the down-side is that I can't use any
sort of SMART stuff over the bus (as pointed out by someone else).

Anyway, it's currently in a RAID-1 configuration (which I used for some
initial soaktests) and seems to be just fine:

Filesystem            Size  Used Avail Use% Mounted on
/dev/md9              6.8T   33M  6.7T   1% /mnt

And it's more than fast enough too, although it'll be a lot slower when
I rebuilt it in RAID-6 mode.

Version  1.03       ------Sequential Output------ --Sequential Input-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP
/sec %CP
bertha           2G           266336  99 203934  61           421850  40
872.9   1

md9 : active raid0 sdo[14] sdn[13] sdm[12] sdl[11] sdk[10] sdj[9] sdi[8]
sdh[7] sdg[6] sdf[5] sde[4] sdd[3] sdc[2] sdb[1] sda[0]
      7317748800 blocks 64k chunks


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