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Introduction to Disk Mirroring CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
How CMS implements disk mirroring 7
Mirror layouts 1
Mirror layouts on a factory-installed mirrored system differ depending
upon the platform. When a system is upgraded to mirroring in the field,
mirror layouts are essentially unpredictable, and depend on how many
disk drives are already installed, and what their target numbers are.
Mirror layout on a
Sun
Enterprise
3000
computer 1
On a
Sun Enterprise
3000 platform with factory-installed mirroring, the
mirror layout is the simple odd/even arrangement shown in the table
below. A system upgraded to mirroring in the field probably has a
different mirror layout.
mirror d13
(/
(root)
filesystem)
mirror d21
(
/cms
filesystem)
mirror d17
(swap partition)
(CMS r3v8)
No.
Disks
submirror
d11
submirror
d12
submirror
d19
submirror
d20
submirror
d15
submirror
d16
2 c0t0d0s0 c0t1d0s0 c0t0d0s3 c0t1d0s3 c0t0d0s4 c0t1d0s4
4
c0t0d0s0 c0t1d0s0
c0t0d0s3
c0t2d0s1
c0t1d0s3
c0t3d0s1
c0t0d0s4 c0t1d0s4
6
c0t0d0s0 c0t1d0s0
c0t0d0s3
c0t2d0s1
c0t10d0s1
c0t1d0s3
c0t3d0s1
c0t11d0s1
c0t0d0s4 c0t1d0s4
8
c0t0d0s0 c0t1d0s0
c0t0d0s3
c0t2d0s1
c0t10d0s1
c0t12d0s1
c0t1d0s3
c0t3d0s1
c0t11d0s1
c0t13d0s1
c0t0d0s4 c0t1d0s4
10
c0t0d0s0 c0t1d0s0
c0t0d0s3
c0t2d0s1
c0t10d0s1
c0t12d0s1
c0t14d0s1
c0t1d0s3
c0t3d0s1
c0t11d0s1
c0t13d0s1
c0t15d0s1
c0t0d0s4 c0t1d0s4