Adding Storage; Expanding Storage - HP AK373A - StorageWorks All-in-One Storage System 1200r 5.4TB SAS Model NAS Server User Manual

When enabling disk quotas, it is possible to set both the disk quota limit and the disk quota warning
level. The disk quota limit specifies the amount of disk space a user is allowed to use. The warning
level specifies the point at which a user is nearing his or her quota limit. For example, a user's disk
quota limit can be set to 50 megabytes (MB), and the disk quota warning level to 45 MB. In this case,
the user can store no more than 50 MB on the volume. If the user stores more than 45 MB on the
volume, the disk quota system logs a system event.
In addition, it is possible to specify that users can exceed their quota limit. Enabling quotas and not
limiting disk space use is useful to still allow users access to a volume, but track disk space use on a
per-user basis. It is also possible to specify whether or not to log an event when users exceed either
their quota warning level or their quota limit.
When enabling disk quotas for a volume, volume usage is automatically tracked from that point
forward, but existing volume users have no disk quotas applied to them. Apply disk quotas to existing
volume users by adding new quota entries on the Quota Entries page.
NOTE:
When enabling disk quotas on a volume, any users with write access to the volume who have not exceeded
their quota limit can store data on the volume. The first time a user writes data to a quota-enabled volume,
default values for disk space limit and warning level are automatically assigned by the quota system.
For more information about disk quotas, read the online help.

Adding storage

Expansion is the process of adding physical disks to an array that has already been configured.
Extension is the process of adding new storage space to an existing logical drive on the same array,
usually after the array has been expanded.
Storage growth may occur in three forms:
• Extend unallocated space from the original logical disks or LUNs.
• Alter LUNs to contain additional storage.
• Add new LUNs to the system.
The additional space is then extended through a variety of means, depending on which type of disk
structure is in use.

Expanding storage

Expansion is the process of adding physical disks to an array that has already been configured. The
logical drives (or volumes) that exist in the array before the expansion takes place are unchanged,
because only the amount of free space in the array changes. The expansion process is entirely
independent of the operating system.
NOTE:
See your storage array hardware user documentation for further details about expanding storage on the
array.
HP StorageWorks All-in-One Storage System 141