Designing Disaster Recovery Clusters using Metroclusters and Continentalclusters, Reprinted October 2011 (5900-1881)

Figure 44 Sample symrdf list Output from R2 Side
4. Match the logical device numbers in the symrdf listings with the HP-UX device file names in
the output from the syminq command. This displays which devices are seen from each node
to ensure this node can see all necessary devices.
Use the Symmetrix ID to determine which Symmetrix array is connected to the node. Then use
the Symmetrix device number to determine which devices are in the same logical device seen
by each node that is connected to the same Symmetrix unit. Record the HP-UX device file
names in your table.
Table 22 shows a partial mapping for a 4 node cluster connected to two Symmetrix arrays
(95 and 50). There may be many R1 and R2 devices and many gatekeepers for each package,
so this table will be much larger for most clusters. Also, with M by N configurations, the number
of devices increases according to the number of Symmetrix frames.
Table 22 Mapping for a 4 Node Cluster connected to 2 Symmetrix Arrays
Nodes 4 /dev/rdsk
device file name
Node 3 /dev/rdsk
device file name
Node 2 /dev/rdsk
device file name
Node 1 /dev/rdsk
device file name
Symmetrix ID,
device #, and type
c0t4d095ID
c6t0d0005Dev#
R1Type
c4t0d050ID
c0t4d0014Dev#
R2Type
c0t2d295ID
c0t4d200ADev#
R2Type
c3t0d250ID
c4t3d2012Dev#
R1Type
c0t15d095ID
c0t15d0040Dev#
GKType
c3t15d150ID
c5t15d1041Dev#
GKType
Preparing the Cluster for Data Replication 261