Dell PowerVault ME5 Series Storage System CLI Reference Guide

Volume sizes are aligned to 4.2 MB (4 MiB) boundaries. When a volume is created or expanded, if the resulting size would be less than 4.2 MB it will be increased to 4 MB; if the resulting size would be greater than 4.2 MB it will be decreased to the nearest 4.2 MB boundary.

For virtual storage, if overcommit is disabled, expansion is restricted to the space available in the pool that contains the volume. If overcommit is enabled, the volume size can exceed the physical capacity of the pool. To see whether overcommit is enabled, use the show pools command. The maximum size of a virtual volume is 140 TB (128 TiB).

You cannot expand a replication set's secondary volume. However, you can expand a replication set's primary volume, which will automatically expand its secondary volume, even if replication is in progress.

For linear storage, if insufficient space is available for expansion in the disk group, first expand the disk group by using expand disk-group.

expand volume

size <size>[B|KB|MB|GB|TB|KiB|MiB|GiB|TiB] | max

<volume>

The amount of space to add to the volume. The unit is optional (B represents bytes). If base 2 is in use, whether you specify a base-2 or base-10 unit, the resulting size will be in base 2. If no unit is specified, the default is 512-byte blocks.

The maximum volume size for virtual storage is 128 TiB. The maximum volume size for linear storage is limited only by 64-bit addressing, so 8 ZiB with 512-byte sectors. For linear storage, if max is specified, the volume will expand to fill the available space in the disk group.

The name or serial number of the volume to expand. A name that includes a space must be enclosed in double quotes.

Expand volume V1 by 100 GB.

# expand volume size 100GB V1

expand disk-group

show volumes