98 Configuration and Tuning GPFS for Digital Media Environments
zoning configuration of one switch (itsosan1). As all nodes have two HBAs, the
zoning of the second switch is similar, using the second HBA and the second
controller (B) of the DS4500 instead. Aliases are used for configuration, as
names are easier to remember than numbers.
Example 3-5 FC-switch (2109-F32) itsosani1 profile - partly (zone configuration only)
[Zoning]
cfg.ITSO_zone_cfg:GPFS_ITSO1_gpfs41A;GPFS_ITSO1_gpfs42A;GPFS_ITSO1_gpfs43A;GPFS
_ITSO1_gpfs44A;GPFS_ITSO2_gpfs29A;GPFS_ITSO2_gpfs29B;GPFS_ITSO2_gpfs30A;GPFS_IT
SO2_gpfs30B
zone.GPFS_ITSO1_gpfs41A:DS4500_A1;gpfs41_1
zone.GPFS_ITSO1_gpfs42A:DS4500_A1;gpfs42_1
zone.GPFS_ITSO1_gpfs43A:DS4500_A1;gpfs43_1
zone.GPFS_ITSO1_gpfs44A:DS4500_A1;gpfs44_1
zone.GPFS_ITSO2_gpfs29A:DS4500_A1;gpfs29_1
zone.GPFS_ITSO2_gpfs29B:DS4500_B1;gpfs29_2
zone.GPFS_ITSO2_gpfs30A:DS4500_A1;gpfs30_1
zone.GPFS_ITSO2_gpfs30B:DS4500_B1;gpfs30_2
alias.DS4500_A1:20:02:00:a0:b8:12:10:6f
alias.DS4500_B1:20:03:00:a0:b8:12:10:6f
alias.gpfs29_1:10:00:00:00:c9:31:b0:4c
alias.gpfs30_1:10:00:00:00:c9:33:01:8a
alias.gpfs41_1:10:00:00:00:c9:42:1e:83
alias.gpfs42_1:10:00:00:00:c9:42:2f:78
alias.gpfs43_1:10:00:00:00:c9:40:77:58
alias.gpfs44_1:10:00:00:00:c9:40:3b:41
enable:ITSO_zone_cfg
3.2.4 Servers
IBM offers a wide range of servers suitable for running GPFS. The latest
supported server hardware list can be found at:
http://www.ibm.com/servers/eserver/clusters/software/gpfs.html
Whenever you chose server, make sure it fits your performance and connectivity
needs, and also check for latest microcode updates available. Make sure to use
the correct files for your platform. Follow the instructions described in the
README file.
In our environment we have used several platforms, but we have closed as an
example two IBM Eserver® pSeries 550 with the following configuration:
򐂰 4 processors
򐂰 8 GB RAM
򐂰 8 x 73 GB internal SCSI disks divided in two SCSI buses
Chapter 3. Infrastructure configuration 99
򐂰 One dual port on-board Gigabit ethernet
򐂰 One dual port PCI gigabit ethernet adapter
򐂰 Four FC 2765 HBAs (Emulex)
We partitioned the servers Logical Partitioning (LPAR) in two independent logical
partitions, each containing half of the resources mentioned above. We have use
static partitions only, with dedicated resources.
We have defined the available IDE (CD-ROM) and the USB bus to be a “desired”
resource, therefore it can be alternately allocated to each partition (for software
installation and updates). The final configuration contains is results in four
independent hosts.
Figure 3-9 shows the memory allocation for a partition.
Figure 3-9 LPAR profile of p5 550 - memory configuration
Figure 3-10 on page 100 shows the I/O resource allocation for our systems.
Restriction: Keep in mind that without a PCI expansion drawer, the available
number of PCI slots of an p5 550 is limited to five.
100 Configuration and Tuning GPFS for Digital Media Environments
Figure 3-10 LPAR profile of p5 550 - physical I/O configuration
Finally, we have allocated two dedicated processors for each LPAR, as shown in
Figure 3-11 on page 101.

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