[geeks] DiskSuite configuration suggestions

[Ryn]

I would recommend RAID 1+0 if you don't mind throwing away 1/2 of your drives.
RAID5 is
sloooooooooooow. We did some testing with RAID5 and 1+0 metadevices with
bonnie.RAID5
is slow slow slow slow. VxVMs implementation of RAID5 somehow outperforms the
disksuite equivalent.

----- Original Message -----
From: "Bill Bradford" <mrbill at mrbill.net>
To: <geeks at mrbill.net>; <rescue at mrbill.net>
Sent: Thursday, February 14, 2002 2:58 AM
Subject: [geeks] DiskSuite configuration suggestions


> Okay, we finally have a D1000 and controller card connected to the SunHELP
> server.  Yay!
>
> root at ohno:/> format
> Searching for disks...done
>
> AVAILABLE DISK SELECTIONS:
>        0. c0t0d0 <QUANTUM-QM39100TD-SW-N491 cyl 7797 alt 2 hd 10 sec 228>
>           /pci at 1f,0/pci at 1/scsi at 1/sd at 0,0
>        1. c2t0d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 0,0
>        2. c2t1d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 1,0
>        3. c2t2d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 2,0
>        4. c2t3d0 <SUN18G cyl 7506 alt 2 hd 19 sec 248>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 3,0
>        5. c2t8d0 <SUN9.0G cyl 4924 alt 2 hd 27 sec 133>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 8,0
>        6. c2t9d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
>           /pci at 1f,0/pci at 1,1/scsi at 3/sd at 9,0
>
> I've got some filesystems and meta database slices on 5 and 6 (a 9gig and
> a 36gig).
>
> My question is - i've got the four 18G drives left.  Whats the best
> software RAID level that I can use for a good balance of performance
> and reliability?  I first thought RAID-5, but then have read some
> newsgroup posts that say it *sucks* with big drives/partitions...
>
> Thoughts?  Prior experience?  (DiskSuite 4.2.1 / Solaris 8)
>
> Bill
>
> --
> Bill Bradford
> mrbill at mrbill.net
> Austin, TX
> _______________________________________________
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