Quantum 3.5.2 manual Repeat this procedure for all file systems

	General Operating Guidelines and Limitations
Operating System /
Affected Component	Description
All	Be aware of the following limitations regarding file systems and stripe
	groups:
	• The maximum number of disks per file system is 512
	• The maximum number of disks per data stripe group is 128
	• The maximum number of stripe groups per file system is 256
	• The maximum number of tape drives is 256
	To prevent data loss and aid disaster recovery, Quantum recommends
	adjusting policy settings to retain two copies of critical data. In addition, data
	stored to a storage disk should be stored on RAID (or, if only one copy is
	retained, the RAID should be mirrored). This way, in the event of a disk
	failure, no data is lost.
	The trashcan feature has been removed in StorNext 3.0. Before upgrading to
	StorNext 3.0, you must empty the trashcan on all file systems where this
	feature is enabled. If the trashcan directories are not removed, the upgrade
	will fail.
	To empty the trashcan on a file system where it is enabled, change to the file
	system directory (for example /stornext/snfs1). Then, at the command
	prompt, type:
	rm -rf TrashCan
	Repeat this procedure for all file systems.
	StorNext File System is incompatible with third-party portmappers.
	Hot re-zoning of SAN fabrics is not supported.
	Affinity names cannot be longer than eight characters. StorNext truncates
	affinity names after the eighth character, so if you have two or more affinities
	whose first eight characters are identical, StorNext considers them the same
	affinity. For example, if you have affinities called “affdata01” and
	“affdata02,” StorNext sees them both as “affdata0” and treats them as the
	same affinity.
	For managed file systems only, the maximum directory capacity is 50,000
	files per single directory. (This limitation does not apply to unmanaged file
	systems.)

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