IBM® DS5000, IBM® DS4000™, and IBM® DS3000 storage systems are supported with the Lenovo Storage V series clustered system.
The following steps provide the supported options
and impact on the Lenovo Storage V series system:
- Set the host type for Lenovo Storage V series 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 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 single Lenovo Storage V series system
can be created.
- Only map one partition to any of the ports on any of the nodes
that are in the Lenovo Storage V series 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 Lenovo Storage V series 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 Lenovo Storage V series 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 Lenovo Storage V series ports because the access/UTM LUN is not required by the Lenovo Storage V series system.
No events are generated if the access/UTM LUN is not in the partition.
- If the access/UTM LUN is included in the Lenovo Storage V series partition,
the access/UTM LUN must not be configured as logical unit number 0.
If the Lenovo Storage V series 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 Lenovo Storage V series 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 Lenovo Storage V series 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 Lenovo Storage V series system
ignores the preferred ownership of the IBM® DS5000, IBM® DS4000™, or IBM® DS3000 system.