Expanding The Lun - IBM totalstorage 326 User Reference

2. Select Create Array.
3. Select either Automatic or Manual, depending on your requirements. Automatic
4. Once the initialization for all arrays completes, restart the system.
5. Continue with "Formatting the logical drives" on page 35.

Expanding the LUN

LUN expansion is enabled by the DiskPart command line utility. Using DiskPart, you
can dynamically expand an existing logical drive into unallocated space that exists
in a LUN.
Note that you cannot use DiskPart to dynamically expand an existing LUN in array.
You can do this only with array/LUN management software such as ServeRAID or
Storage Manager Application.
To expand a LUN, use the following two DiskPart commands:
select This command focuses on (selects) the volume that you want to expand.
extend
mode chooses drives across different enclosures connected to that particular
storage controller, which spreads the array bandwidth and increases
redundancy.
Note: In this procedure, it is recommended that the arrays are not RAID-0.
If you are using the preset factory configuration, the first logical drive is
configured as the 500-MB Quorum drive. Configure the second logical drive with
the remainder of the space on the array.
If you are creating a customized configuration on the 5191 RAID Storage
Controller, ensure that you create a 500-MB Quorum drive on a RAID-5 array.
Create another logical drive using the remaining space on that RAID-5 array.
Create additional arrays using the rest of the unconfigured capacity until all of
the arrays are created and initializing. (This process will take place automatically
in the background.)
Note: You will see notifications that new hardware has been found, and you will
be asked whether you want to restart your computer. Do not restart your
computer at this point.
Finally, you will see a message that Windows 2000 has finished installing
new devices, and you will be asked whether you want to restart you
computer. Again, do not restart your computer at this point. Leave this
message in the foreground until the array initialization completes.
The format of the command and its options are
select volume[=n/l]
You can specify the volume by either index, drive letter, or mount point
path. On a basic disk, if you select a volume, the corresponding partition is
put in focus. If you do not specify a volume, the command displays the
current in-focus volume.
This command extends the current in-focus volume into contiguous
unallocated space. The unallocated space must begin where the in-focus
partition ends. The format of the command and its options are
extend [size=n]
Chapter 4. Setting up storage
33