HP P6000 Continuous Access Software User Manual
Page 139
Methods for resizing a host volume file system and virtual disk
In addition to DC-Management, you can resize a host volume from the operating system and from
HP P6000 Command View. The following table lists the various resize options available and
describes what you should consider when choosing a specific option.
Comments
Operations available
Resize option
Provides full resizing capability and
integration with the operating system. With
Extend or shrink a host volume or the
underlying virtual disk.
DC-Management
a single step you can resize the file system
and the underlying virtual disk
simultaneously, simplifying capacity
management.
HP-UX operating system
(without DC-Management)
•
HP P6000 Command View must be used
to manually resize the underlying virtual
•
Non-LVM host volumes using the Veritas
file system can be resized using the fsadm
disks before (extend) or after (shink)
command if online JFS is available, and
resizing the file system. The storage stack
the extendfs command if online JFS is
not available.
on the host needs to be made aware of
the change in the virtual disk's capacity.
•
LVM host volumes can be extended in two
steps. First, the volume group and logical
•
Before extending virtual disks on the
array, care must be taken to ensure that
volume has to be extended using
the additional capacity can be used by
vgmodify
and other LVM commands.
the host file system. This can be a
Then the file system is extended using the
problem if the firmware version does not
fsadm
command if online JFS is available,
allow shrinking of the virtual disk to
and the extendfs command if online JFS
is not available.
recover the storage. DC-Management
prevents such accidental grow of virtual
See the following website for information on
resizing disks:
disks by validating the host volume
structure and blocking the operation if
necessary.
•
Extra care must be taken to not shrink a
host volume beyond the file system
allocated boundaries.
Extend (Windows 2003 and Windows Server
2008) or shrink (Windows Server 2008) a
Windows operating
system (without
DC-Management)
•
HP P6000 Command View must be used
to manually resize the underlying virtual
disks before (extend) or after (shink)
resizing the file system.
host volume file system using Windows Disk
Manager.
•
Before extending virtual disks on the
array, care must be taken to ensure that
the additional capacity can be used by
the host file system. This can be a
problem if the firmware version does not
allow shrinking of the virtual disk to
recover the storage. DC-Management
prevents such accidental grow of virtual
disks by validating the host volume
structure and blocking the operation if
necessary.
Does not provide integration with the host
operating system. You must resize the file
system manually.
CAUTION:
Care must be taken to not
shrink a virtual disk beyond the boundaries
of usage by either file systems or
volume/partition managers on the host.
Extend or shrink a virtual disk presented to a
host.
HP P6000 Command
View (without
DC-Management)
Host volume concepts
139