Re: ZFS and JBODs


Frank Cusack wrote:
On Fri, 18 Aug 2006 07:45:24 +0000 (UTC) Robert Milkowski <rmilkowski-NO-SPAM@xxxxxxxx> wrote:
Frank Cusack <fcusack@xxxxxxxxxxx> wrote:
On Thu, 17 Aug 2006 09:06:54 +0000 (UTC) Robert Milkowski <rmilkowski-NO-SPAM@xxxxxxxx> wrote:
3511 isn't supported as JBOD and at least with 500gb drives
it doesn't even work properly.

ugh! I was going to try and use 750GB drives in a 3511. Why would a JBOD
care about the size of the disks?

To clarify - 3511 with 500gb work fine with a head unit.
However when I tried it as JBOD I experienced some problems
with writing do disks - probably a firmware problem, or sata-router, or...

But if you have a head unit it should work ok.

What is a head unit? I guess you're referring to a raid controller?

I just got a 3511 JBOD yesterday, put 5x750GB disks in it and it works
well. It is direct attached to a v210 running s10u1. No raid
controller, no 3510/3511 raid unit in front of it.

This is with an apple pci-x FC card (lsi 7202xp) with copper cables.

I did get these errors

Aug 18 12:02:57 test scsi: WARNING: /pci@1d,700000/IntraServer,fc@1/ssd@4,0 (ssd4):
Aug 18 12:02:57 test Corrupt label; wrong magic number
Mode sense page(3) reports nsect value as 0, adjusting it to 1408

but after labelling the disks they stopped. Also, I couldn't use
fmthard to put a label on the unlabelled disks, I got some geometry
unknown error. But format worked. I haven't tried fmthard again
after labelling with format.

My testing is just making multiple copies of the s10 dvd.

-frank

Any standard 750 will work?

There is nothing proprietary about the housing?

..

.

Relevant Pages

  • Re: SATA JBODs for backup-to-disk
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    (comp.sys.ibm.pc.hardware.storage)
  • Re: SATA JBODs for backup-to-disk
    ... Maybe I should have said "multi drive SATA enclosure" instead of JBOD. ... You can usually use mirroring, RAID 5, RAID 6, and ... after another and supports differently sized disks. ... but "Just a Bunch Of Disks" is a RAID mode ...
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  • Re: SATA JBODs for backup-to-disk
    ... They all pretty much offer hot-swap drives, ... JBOD is about the least suitable option for backup. ... You can usually use mirroring, RAID 5, RAID 6, and RAID ... after another and supports differently sized disks. ...
    (comp.sys.ibm.pc.hardware.storage)
  • Re: ZFS and JBODs
    ... Why would a JBOD ... To clarify - 3511 with 500gb work fine with a head unit. ... with writing do disks - probably a firmware problem, or sata-router, or... ... I guess you're referring to a raid controller? ...
    (comp.unix.solaris)
  • Re: ZFS and JBODs
    ... I guess you're referring to a raid controller? ... I just got a 3511 JBOD yesterday, put 5x750GB disks in it and it works ... controller, no 3510/3511 raid unit in front of it. ... head unit = unix with controllers ...
    (comp.unix.solaris)