We're contemplating setting up a RAID 5 group on our SWXCR. The book says
that the controller supports different-sized disks in the same group. It
doesn't go into how, however, and I don't see how a RAID 5 set could survive
the failure of a 4 GB drive mixed in with several 2 GB drives unless only
thr first 2 GB of the larger drive is in use. Is this the case, or am I
missing the point? We're currently thinking in terms of taking two 2GB
drives away from our Informix group, giving them a single 4GB drive to
replace it, and adding them to 3 other 2GB drives to make a single 8GB RAID
5 set. The Informix types are now squawking that they don't want to do that
for performance reasons, but we'll bump hard against the SWXCR's 8-logical-
volume limit if we don't. They want us to use the new 4GB drive instead...
hence my question. (If it matters, the two drives in question are RZ28Bs, as
is one of the other three, while the other two are RZ28s. The new 4GB drive
is a Conner CFP4207S.)
The Informix folks here are also saying that Informix doesn't recommend RAID
be used anywhere on the machine where Informix is running...not even an
unrelated Unix filesystem, and definitely not the filesystem where the
Informix executable lives. I can understand Informix saying that about raw
drives managed by the Informix engine, but the rest of the system?! That one
sets the BS flag.
Thanks in advance for any replies.
--
Jay Maynard, EMT-P, K5ZC, PP-ASEL | Never ascribe to malice that which can
http://k5zc.hsc.uth.tmc.edu | adequately be explained by stupidity.
"Are we going to push it to the edge of the envelope?" -- Pinky
"No, Pinky. We may, however, reach the sticky part." -- The Brain
Received on Tue Apr 16 1996 - 18:48:11 NZST