Ciprico 4105 Series user manual Frequently Asked Questions FAQs, 2. Frequently Asked Questions

MediaVault 4105 User Manual ProblemSolving

Frequently Asked Questions (FAQs)

TABLE 7-2.Frequently Asked Questions.

What is the proper placement of my	The MV 4105 can be operated in a tower configuration only.
MediaVault?	Whenever possible, do not place the unit near the floor, as it
	will pick up more dust.
What are typical data-rate speeds?	The internal data rate ranges is 500MB/sec.
	Externally, you should see between 250-320MB/sec in RAID 0
	under ideal conditions. In RAID 3, this rate drops by about
	20-40 MB/sec.
What is striping?	Striping is a technique where different parts, called sectors, of
	different disk drives are used alternately in sequence.
	This is done for several possible reasons: a) Gaining
	performance; b) Increasing reliability; or c) Increasing
	capacity.
What is spanning/concatenation?	This is a technique where hard disk drives are used end-to-
	end, i.e. where one fills up the data continues on to the next.
	This is strictly done for capacity, and has no gains in either
	speed or reliability.
What is mirroring?	Mirroring is where data, when written, is written to two differ-
	ent disks or sets of disks -- i.e. the same copy in both places.
	This offers reliability, at the cost of capacity and speed.
What is RAID 0?	In RAID 0, the disk drives are striped with corresponding
	sectors of other drives, called strips, sequentially.
	Data written goes to sector 1 of drive 1, then sector 1 of drive
	2, and so on. RAID 0 sacrifices data protection to gain
	capacity and performance.
	To do RAID 0 requires a minimum of 2 disk drives. The
	MV 4105 uses 5 disk drive modules.

MV 4105_Ciprico Inc. 7-5