On Fri, 20 May 2011, Louis-David Mitterrand wrote:
Hi,
I just installed an Adaptec SAS 4805 and plugged 8 disks previously used
"as is" (no raid) on an LSI adapter but none are recongnized as boot
disk ("no bios installed").
It seems I need to "initialize" (read: wipe) them in the Adaptec bios
menu before being able to use them as JBOD.
What the fuck?!
By my defintion JBOD should means "just get out of the way and let me
use my disks as they are".
Does that "initlialization" mean that disks become unusable when plugged
to an adapter of any other brand or model?
What is the underlying format of JBOD disks. Can they be read by a
straight, non-raid adapter?
These hardware raid cards suck on so many levels...
Yup.
I don't know about that, but I had something similar with a Dell
controller - I wanted a box of 15 x 500GB drives - but the only way to get
it was to buy it with their PERC RAID controller cards, however I was
assured that I didn't need to use the card RAID functions and I could use
them "just as a box of disks" ...
It wasn't having it and in the end, I had to create 15 RAID-0 arrays of
one disk each, which I could them assemble as a RAID-6 drive underLinux
MD.
It worked fine, but would have been a PITA to anyone else changing a drive
(fortunately it never broke in it's lifetime) but the down-side was that
the controler hid all the SMART information from the host )-:
Bah!
Gordon
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