IBM® DS5000, IBM® DS4000™, and IBM® DS3000 storage systems are supported by the system.
The following steps provide the supported options
and impact on the system:
- Set the host type for the system to IBM TS SAN VCE.
For higher security, create a storage partition for every host
that will have access to the storage system. If you set a default host group and add another host other
than Lenovo Storage V series to the default group, the new host automatically has full read
and write access to all LUNs on the storage system.
- See the following Web sites 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 single system can be created.
- Only map 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 there are events 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 a 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. No events are generated if the access/UTM LUN is not in the
partition.
- If the access/UTM LUN is included in the system partition, the
access/UTM LUN must not be configured as logical unit number 0. If
the system partition (the host group) has been 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 Lenovo Storage V series 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.