IBM DS5000, IBM DS4000, and IBM DS3000 storage systems are supported
by the system.
The following steps provide the supported options and impact on thesystem.
- Set the host type forthe system
to IBM TS SAN VCE.
For higher security, create a storage partition for every host that has access to the storage system. If you set a default host
group and add another host other thanthe system
to the default group, the new host automatically has full read and write access to all LUNs on the
storage system.
- See the following website
for the scripts
that are available to change the setup of the IBM DS5000, IBM DS4000,
or IBM DS3000 system:
The following limitations apply to partitions:
- Only one IBM DS5000, IBM DS4000, or IBM DS3000 system storage partition that
contains any of the ports of any of the nodes in a
system
system can be created.
- Map only one partition to any of the ports on any of the nodes that are in the
system to
avoid unexpected behavior. For example, you can lose access to your storage or you might not receive
warning messages, even if events are logged in the
system
event log.
The following limitation applies to
IBM DS5000,
IBM DS4000, or
IBM DS3000 Copy Services:
- Do not use IBM DS5000, IBM DS4000, or IBM DS3000 Copy Services when the
system is
attached to an IBM DS5000, IBM DS4000, or IBM DS3000 system.
- You can use partitioning to allow IBM DS5000, IBM DS4000, or IBM DS3000 Copy Services usage for other
hosts.
The following information applies to the access LUN (also known as the Universal Transport
Mechanism (UTM) LUN):
- The access/UTM LUN is a special LUN that allows an IBM DS5000, IBM DS4000, or IBM DS3000 system to be configured
through software over the Fibre Channel connection.
- The access/UTM LUN does not have to be in the partition that contains the system ports because
the access/UTM LUN is not required by the system. If the
access/UTM LUN is not in the partition, no events are generated.
- If the access/UTM LUN is included in the Storwize V5000 partition, the access/UTM LUN must not
be configured as logical unit number 0. If the system partition (the
host group) was created with multiple hosts, the access LUN must be present in all hosts and must be
the same logical unit number.
The following information applies to the logical unit (LU):
- The system attempts to follow the preferred ownership that is specified by the storage system. You can specify which
controller (A or B) is used for I/O operations to an LU.
- If the system can see the
ports of the preferred controller and event conditions do not exist, the system accesses the LU
through one of the ports on the preferred controller.
- If event conditions exist, the system ignores the
preferred ownership of the IBM DS5000, IBM DS4000, or IBM DS3000 system.