HP File System Extender (FSE) manual FSE media, FSE medium volumes

•the total and available capacity of all system volumes on media in the media pool,

•the percentage of system volume usage,

•the numbers of “good” (usable), unreliable, unusable, and uninitialized media of the media pool.

Excerpt from the fsepartition --status output

Pool	Size[MB]		Avail[MB]	Used[%]	SysSize[MB]		SysAvail[MB]
poolLTO		92173	70397	24		0	0
SysUsed[%]		#Good	#Unreliable	#Unusable		#Uninit
	0	2	0		0	0

FSE media

An FSE implementation supports tape media as well as disk media. Each FSE medium has an entry and properties written in the Resource Management Database (RMDB) and is assigned to one FSE media pool according to its type. The Resource Manager identifies the medium with a barcode, which is either acquired automatically from the media library or specified manually when adding media to the media pool. A medium barcode must be unique - no other tape or disk medium in any of the libraries managed by a particular FSE implementation can have the same barcode.

Once the medium is added to the FSE media pool, it can be prepared for use by the FSE implementation. Preparation includes formatting and initializing of the FSE media. Formatting depends on media technology support for multiple volumes. Next step is initialization, which overwrites the volume header and adds the medium volume entry to the Resource Management Database. Both media formatting and initialization are processed by an administrative job and are executed by the Back End Agent.

Disk media emulates tape media to a great extent and can be used for regular archiving of the migrated FSE implementation. The advantage of using disk media is accelerated recall of offline files.

The fsemedium command is used to monitor and manage FSE media. It is also used to invoke administrative jobs, which perform FSE media formatting and initialization of new or already used media.

The procedures in this section provide instructions on:

•Adding media to an FSE media pool, page 102

•Formatting media, page 102

•Initializing media, page 103

•Duplicating media, page 104

•Reorganizing media, page 107

•Recreating redundant copies of migrated data, page 113

•Checking the status of media, page 117

•Changing the condition status of media, page 119

•Closing medium volumes, page 120

•Recreating Fast Recovery Information from media, page 120

•Removing FSE media, page 121

FSE medium volumes

There are two types of medium volumes:

•Data volumes

These volumes can be created on any of the supported media families.

Volumes of this type are used to store regular migration data. Each regular or WORM FSE medium has one data volume and therefore does not need to be formatted. Disk media can be partitioned into several data volumes but must be formatted even for a single volume.

•System volumes

98 Managing media