HP StorageWorks XP Remote Web Console Software - Manual (Page 63)

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HP-UX 11.31
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OpenVMS 8.3
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Red Hat Enterprise Linux 5.1
Do not increase the capacity of V-VOLs used online to any other host. Any V-VOL's capacity can
be increased if the V-VOL is offline to all hosts. Always check that the host operating system, volume
manager, and file system accept that a LUN’s capacity can be increased before attempting a
V-VOL capacity increase. Also review and test the proper procedure documented by the hosts’s
operating system concerning increasing a LUN’s capacity.
CAUTION: The processing differs as follows, depending on the value of host mode option 40:
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When the value of host mode option 40 is not enabled, the host will not be notified that the
V-VOL capacity has been increased. Therefore, the V-VOL data has to be read again by the
storage system after the capacity has been increased.
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When the value of host mode option 40 is enabled, the host will be notified that the V-VOL
capacity has been increased. If the operating system cannot recognize the value of capacity
that was increased, the V-VOL data has to be read again by the storage system.
To increase the V-VOL capacity, the following conditions must be satisfied:
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Free space exists immediately below the V-VOL in the V-VOL window. In the V-VOL capacity,
only the free space capacity can be increased. You can see the free space in the V-VOL
window of Remote Web Console.
Figure 40 (page 63) illustrates displaying free space.
Figure 40 Example of Displaying Free Space
In this example, you can increase the capacity of the LDEV shown as 00:10:00 by 1,024.75 MB,
and the capacity of the LDEV shown as 00:10:67 by 4,087,730.00 MB. You can increase the
V-VOL capacity while the free space exists.
Managing V-VOLs and V-VOL Groups 63