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M a n a g i n g t h e S 2 A 9 5 5 0
D a t a D i r e c t N e t w o r k s S 2 A 9 5 5 0 U s e r G u i d e
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To add a 64 bit LUN, type:
LUN ADD64=x
<Enter>
where “x” is the Logical Unit Number <0..127>.
For either case, the system prompts you for all the necessary information to create the LUN and
indicates if the LUN was successfully added to the system.
The required LUN information includes:
• Capacity (in MBytes) - default is to use all available capacity
• Number of LUN segments in a LUN group
• Number of tiers - default is to use all tiers
• Block size (in Bytes) - default is 512 Bytes
• Label - may contain up to 12 characters
3.2.9.3 Formatting a LUN
A LUN must be formatted before it can be used. To format a LUN, type:
LUN FORMAT=x
<Enter>
where “x” is the LUN <0..127>. This performs a destructive initialization on the specified LUN by
over-writing all the data on the LUN with zeroes. A LUN segment in a LUN group can be specified by
“x.y”, where “x” is the LUN group in the range <0..127> and “y” is the LUN segment of the group in
the range <0..63>. If all of the segments in a LUN group are unformatted then the entire LUN group
will be formatted even if only one LUN segment was specified.
The rate of format can be adjusted using the DELAY and EXTENT parameters of the TIER command.
3.2.9.4 Interrupting a LUN Format Operation
If you need to interrupt a format operation, for any reason, use these commands:
•
LUN PAUSE
- to pause the current format operations.
• LUN RESUME - to release the paused format operations.
•
LUN STOP
- to abort all the current format operations.
3.2.9.5 Changing a LUN Label
If you need to change the label of a LUN, type:
LUN LABEL
<Enter>.
Select the LUN to change and enter
the new label. A LUN label may contain up to 12 characters
(Figure 3-24)
.
Figure 3-24 Changing a LUN Label Screen
Enter the LUN to label (0..127), ‘q’ to quit:
S2A [1]: lun label
0
Enter a new label for LUN 0, up to 12 characters:
vol1
Logical Unit Status
Block
Size
LUN Owner Tier List Capacity
(Mbytes)
512
-------------------------------------------------------------------------
10002 Ready [GHS] 0
System Capacity 277810 Mbytes, 237802 Mbytes available.
Status
1 1
512 10002 Ready 1 2 2
512 10002 Ready 2 1 3
512 10002 Ready 3 2 4
Tiers
1
1
1
1
Label
vol1