From: Anil Rajapure (anil_unix1975@yahoo.com)
Date: Mon Feb 03 2003 - 03:13:07 EST
Background -
SG(A.01.02) between two superdomes.
packages-2
package 1 - vg01,vg02 and vg03 with 1 LV in each VG.
-running oracle 8.1.7
package 2 - vg09-one LV. - running oracle 8.1.7
(ALL VGs coming from VA7400 -> raid 0+1)
Problem
high disk ios for above volume groups. Some disks in
all VGS hitting high while some are not. (high
read/write ios for some disks while for others it is
not high)
lv's created without -D and -s g)
1 My question is -- If raid is at 0+1(i.e stripping
and mirroring) , what performance improvement is going
to happen if I recreate lvs with -D -s g?
2 Also we keep on extedning these lvs to accomdate
additional space requiremets.
3 What effect -D -s g will have when extending lvs.
(we have Online JFS-advanced)
4 Is there any connection between distributed LVs(-D
-s g)and SG
Will summarize. thanks in advance.
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