Mirror Layout On A Sun Enterprise 3500 Computer; Required Hardware - Lucent Technologies CentreVu Release 3 Version 8 Disk-Mirrored Systems User Manual

Introduction to Disk Mirroring
How CMS implements disk mirroring
Mirror layout on a Sun
Enterprise 3500
computer
/ (root) filesystem
No. submirror
Disks d11
2 c0t0d0s0
4 c0t0d0s0
6 c0t0d0s0
8 c0t0d0s0

Required hardware

CentreVu CMS Release 3 Version 8 Disk-Mirrored Systems
On a Sun Enterprise 3500 platform, the mirror layout must always be
based upon the bays in which the disks are installed. Submirrors 11, 15,
and 19 are the disks in the lower bay (targets 0 through 3 on controller 0);
1
submirrors 12,16, and 20 are the disks in the upper bay (targets 4
through 7 on controller 1). The table below shows the mirror layout.
mirror d13
submirror
d12
c1t4d0s0
c1t4d0s0
c1t4d0s0
c1t4d0s0
In order for your CMS system to be mirrored, it must have the following
1
hardware installed in addition to the hardware already installed:
For a Sun Enterprise 3500 system, two GigaByte Interface
Converter (GBIC) modules. One will be installed into the UA slot on
the FC-AL Interface board, and the other will be installed into GBIC
Port 1 on the Sbus I/O board (see the illustration on page 15).
For a Sun Enterprise 3500 system, a fiber cable to connect the UA
port GBIC to GBIC Port 1 on the I/O board.
Twice the number of disk drives needed for an unmirrored system.
All the disks must be the same size.
mirror d21
/cms filesystem
submirror submirror
d19 d20
c0t0d0s3 c1t4d0s3
c0t0d0s3 c1t4d0s3
c0t1d0s1 c1t5d0s1
c0t0d0s3 c1t4d0s3
c0t1d0s1 c1t5d0s1
c0t2d0s1 c1t6d0s1
c0t0d0s3 c1t4d0s3
c0t1d0s1 c1t5d0s1
c0t2d0s1 c1t6d0s1
c0t3d0s1 c1t7d0s1
mirror d17
swap partition
(CMS r3v8)
submirror submirror
d15 d16
c0t0d0s4 c1t4d0s4
c0t0d0s4 c1t4d0s4
c0t0d0s4 c1t4d0s4
c0t0d0s4 c1t4d0s4
8