Expanding a file system

File Service Administration Guide for Hitachi NAS Platform

Version

14.9.x

Audience

anonymous

Part Number

MK-92HNAS006-31

Manual file system expansion is supported through NAS Manager and through the CLI.

Navigate to Home > Storage Management > File Systems.
Select a file system and click details to display the File System Details page.
Click expand to display the Expand File System page.

For an untiered file system the Expand File System page looks like the following:

The Allocate On Demand option is not available for UVM-backed spans.

For a tiered file system, the Expand File System page looks like the following:

In some circumstances, such as when the storage pool resides on a UVM span or in HDP compressed storage, a specific stripeset must be selected for expanding the file system. If the server cannot select the stripeset, the Expand File System page shows a list of stripesets from which to select.
To expand the file system manually, do one of the following:
- For an untiered file system, specify the new file system capacity in the New Capacity field and use the list to select MiB, GiB, or TiB.
- For a tiered file system, select the tier you want to expand, and specify the new file system capacity in the New Capacity field, then use the list to select MiB, GiB, or TiB.
  Note: You can expand one tier per expansion operation. To expand both tiers, you must perform a manual expansion twice.
Click OK.

Note: Because space is always allocated in multiples of the chunk size set when the storage pool containing the file system was created, the final size of the file system may be slightly larger than you request.

Manual expansion of file systems is also supported through the command line interface. For detailed information on this process, run man filesystem-expand on the CLI.