survey: disk arrays and locator lights
- From: Anthony D'Atri <aad@xxxxxxxxxxxxxx>
- Date: Wed, 26 May 2010 19:17:45 -0700
I'd like to solicit reports for what folks are using for external disk arrays.
We've used Infortrend RAID units set up effectively as JBOD: one virtual disk
per physical disk, mapped to a LUN. The serial console is awkward, though, as
is the process for replacing a disk. On the plus side, the serial console
lets one see disk serials and flash locator lights, but Solaris can't see disk
models and serials.
We've also used Xtore (AIC) SAS JBOD's, which are nice in that there isn't the
RAID layer to contend with and pay for, but I don't have a way to flash
locator lights so that remote hands can yank a failed disk with certainty.
The wacky persistent mapping that the LSI SAS HBA does really confounds this
-- pull disk #8, replace it with another, and suddenly it shows up to the OS
as, say, #25.
Sun's J4000 arrays appeal in that they seem to work with something called CAM
which can flash locator lights and perhaps show which serial is in which slot.
Sun's pricing, despite their claims of breakthrough cost, is easily 3x what
other arrays readily go for, and if we buy an array not fully populated, we
don't get (Marlin?) brackets for expansion into the the empty slots, so we
effectively have to buy all the disk from Sun, eg. at $1600 for a 2TB SATA,
which is ludicrous.
We're not interested in arrays that do their own RAID of any sort -- we want
JBOD units that we can build ZFS volumes with as we need to.
So, I'd like to know what arrays folks are using, and how you're identifying /
tracking failed disks for swapping. I'll summarize of course. Thanks!
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