Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF

NOTE: The format of output varies depending on the Solutions Enabler version.
Sample symrdf list Output from R1 Side
Symmetrix ID: 000192603927
Local Device View
----------------------------------------------------------------------------
STATUS MODES RDF S T A T E S
Sym RDF --------- ----- R1 Inv R2 Inv ----------------------
Dev RDev Typ:G SA RA LNK MDATE Tracks Tracks Dev RDev Pair
---- ---- -------- --------- ----- ------- ------- --- ---- -------------
80B1 034E R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
80B3 034F R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
80B4 0350 R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
80B5 0351 R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
80B6 0352 R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
80B7 0353 R1:2 RW RW RW S..1. 0 0 RW WD Synchronized
Sample symrdf list Output from R2 Side
Symmetrix ID: 000192603928
Local Device View
----------------------------------------------------------------------------
STATUS MODES RDF S T A T E S
Sym RDF --------- ----- R1 Inv R2 Inv ----------------------
Dev RDev Typ:G SA RA LNK MDATE Tracks Tracks Dev RDev Pair
---- ---- -------- --------- ----- ------- ------- --- ---- -------------
034E 80B2 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
034F 80B3 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
0350 80B4 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
0351 80B5 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
0352 80B6 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
0353 80B7 R2:2 RW WD RW S..2. 0 0 WD RW Synchronized
4. Match the logical device numbers in the symrdf listings with the HP-UX device file names in
the output from the sympd list command.
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 1 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 1 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#
14 Configuring an application in a Metrocluster solution