Tandberg Data VXA-320 (VXA-3) Reliability Specifications, Tape Speed And Access Time, maximum

RELIABILITY SPECIFICATIONS

TAPE SPEED AND ACCESS TIME

The time required to move the tape to a specified position depends on the operation being performed. Table 7-4lists the tape speeds and access times for the VXA-320 tape drive.

Table 7-4Tape speed and access times

Search speed	165 x read/write speed (1 GB/second, native)
(maximum)
Mid-tape reposition	X6 cartridge: 75 seconds
time (average)a, b	X10 cartridge: 75 seconds
	X23 or V23c cartridge: 120 seconds
Load time (logical)	45 seconds for an initialized tape
	50 seconds for an uninitialized tape
Unload time (logical)	65 seconds
Tape speed	17.90 mm/second (typical)

aIn addition to maximum search speed, the mid-tape reposition times depend on acceleration, deceleration, and read positioning to location.

bThe VXA-320 tape drive does not support VXAtape V6, V10, or V17.

cThe VXA-320 tape drive can read or write VXA-2 formatted V23 tapes.

RELIABILITY SPECIFICATIONS

Table 7-5provides reliability specifications for the VXA-320 tape drive.

Table 7-5Reliability specifications

Mean Time Between Failures (MTBF)	300,000 hours
Mean Time to Repair (MTTR)	30 minutes
Service life	5 years
Write reliability	Bit error rate of less than 1x10-16
Read reliability	Bit error rate of less than 1x10-17
Loads/unloads	50,000 cycles, minimum

OCTOBER 2006 VXA-320 TAPE DRIVE

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