HP StorageWorks iSCSI Feature Pack User Guide
17
Expanding a Logical Unit
Because virtualized LUs do not represent actual physical resources, they can be expanded
as more storage is needed. The LU can be increased in size by adding more blocks of
storage from unallocated space on the LU’s physical device or storage pool.
Remember that you will still need to repartition the virtual devices and adjust/create/resize
any file-systems on the partition after the virtual device is expanded. Because partition and
file-system formats are specific to the operating system that the host is running, you must
perform these tasks directly from the host. You can use tools like PartitionMagic
®
or Veritas
Volume Manager
TM
to add more drives to expand existing volumes on the fly in real time
(without application down time).
To expand a LU:
1. On the
Logical Units
screen, click the checkbox to the left of the LU that you want to
expand.
2. Click
Expand
.
3. Indicate how much space to add and click
OK
.
NOTICE:
In order for a host to access the newly expanded LU, you will have to take operating
system-specific actions. If you are using the Microsoft iSCSI initiator, you need to
launch the initiator software on the host machine and log off (from the
Active
Sessions
tab) and then log on (from the
Available Targets
tab). This will temporarily
disconnect the host.
Assigning/Unassigning a Host to a Logical Unit
While you generally assign a host to a LU when you create the LU, at any time you can
change the host assignment. To do this:
1. On the
Logical Units
screen, click the checkbox to the left of the LU whose assignment
you want to change.
2. Click
Hosts
.
3. Assign one or more hosts to the LU and assign access rights for each.
If you change the access rights for a host, you must go to your initiator software and re-
login to the server in order for the change to take effect. If you are using the Microsoft
iSCSI initiator, you need to launch the initiator software on the host machine and log off
