Mirror Layouts; Mirror Layout On A Sun Enterprise 3000 Computer - Lucent Technologies CentreVu Release 3 Version 8 Disk-Mirrored Systems User Manual

Introduction to Disk Mirroring
How CMS implements disk mirroring

Mirror layouts

Mirror layout on a Sun
Enterprise 3000
computer
(/ (root) filesystem)
No. submirror
Disks d11
2 c0t0d0s0
4
c0t0d0s0
6
c0t0d0s0
8
c0t0d0s0
10
c0t0d0s0
CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
Mirror layouts on a factory-installed mirrored system differ depending
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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.
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
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different mirror layout.
mirror d13
submirror
d12
c0t1d0s0
c0t1d0s0
c0t1d0s0
c0t1d0s0
c0t1d0s0
mirror d21
( /cms filesystem)
submirror submirror
d19 d20
c0t0d0s3 c0t1d0s3
c0t0d0s3 c0t1d0s3
c0t2d0s1 c0t3d0s1
c0t0d0s3 c0t1d0s3
c0t2d0s1 c0t3d0s1
c0t10d0s1 c0t11d0s1
c0t0d0s3 c0t1d0s3
c0t2d0s1 c0t3d0s1
c0t10d0s1 c0t11d0s1
c0t12d0s1 c0t13d0s1
c0t0d0s3 c0t1d0s3
c0t2d0s1 c0t3d0s1
c0t10d0s1 c0t11d0s1
c0t12d0s1 c0t13d0s1
c0t14d0s1 c0t15d0s1
mirror d17
(swap partition)
(CMS r3v8)
submirror submirror
d15 d16
c0t0d0s4 c0t1d0s4
c0t0d0s4 c0t1d0s4
c0t0d0s4 c0t1d0s4
c0t0d0s4 c0t1d0s4
c0t0d0s4 c0t1d0s4
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