IBM® DS5000, IBM DS4000®,
and IBM DS3000 storage
systems are supported with the Lenovo Storage V7000clustered system.
The
following steps provide the supported
options and impact on the Lenovo Storage V7000 system:
- Set the host type for Lenovo Storage V7000 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 V7000 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 V7000 system
can be created.
- Only map one partition to any
of the ports on any
of the nodes that are in the Lenovo Storage V7000 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 errors logged in the Lenovo Storage V7000 error
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 V7000 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 V7000 ports
because the access/UTM LUN is not required by the Lenovo Storage V7000 system.
No errors are generated if the access/UTM LUN is not in the partition.
- If the access/UTM LUN is included in the Lenovo Storage V7000 partition,
the access/UTM LUN must not be configured as logical unit number 0.
If the Lenovo Storage V7000 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 V7000 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 V7000 system
can see the ports of the preferred controller and error conditions
do not exist, the Lenovo Storage V7000 system
accesses the LU through one of the ports on the preferred controller.
- If error conditions exist, the Lenovo Storage V7000 system
ignores the preferred ownership of the IBM DS5000, IBM DS4000,
or IBM DS3000 system.