A number of factors affect the performance
of an IP partnership. Some of these factors are latency, link speed,
number of intersite links, host I/O, MDisk latency, and hardware.
The following recommendations might help improve this performance. See IP partnership requirements for additional considerations.
If you choose to use compression and IP partnership in the
same system, certain hardware
updates or configuration choices might help increase IP partnership performance:
- If you are using nodes older than SAN Volume Controller
2145-CG8 and would like to use IP
partnership, or Global Mirror and compression in the same I/O group, you can update to SAN
Volume Controller
2145-SV1 nodes.
- If you have SAN Volume Controller
2145-CG8 nodes and would like to use IP
partnership, or Global Mirror and compression, update hardware to an RPQ 8S1296
hardware update for 2145-CG8.
- If you choose to create an IP partnership on a system that has nodes older
than SAN Volume Controller
2145-CG8 and compressed volumes,
and you have multiple I/O groups, then configure ports for the IP partnership in I/O groups that do
not contain compressed volumes.
- If you require more than a 100 MBps throughput
per intersite link with IP partnership on a node that uses compression, consider virtualizing the
system with SAN
Volume Controller
2145-SV1.
- Use a different port for iSCSI host I/O and IP partnership traffic. Also, use a different VLAN
ID for iSCSI host I/O and IP partnership traffic.