Dell 0TK131 Rev. A01 Power Specifications, Drive Performance Specifications, 3. Power Dissipation

Power Specifications

Maximum voltage and power specifications for the PowerVault LTO-4-120 Half-Height tape drive are listed in Table 6-2 and Table 6-3. Specifications are the same as those for other SCSI drives unless otherwise noted.

Table 6-2. Voltage and Current Specifications

Specification	+12 VDC	+5 VDC
DC Voltage Tolerance	12.00 ± 10%	5.00 ± 5%
Non-operating max voltage	14 Volts peak	5.50 Volts peak
Max operating current
Continuous:	1.70 amps RMS	2.40 amps max RMS*
Peak:	1.90 amps RMS	2.60 amps max RMS*
	(1 sec max)
Standby current (max)	0.37 amps RMS	0.98 amps RMS*
Ripple (peak-to-peak)	< 100 mV	< 100 mV
* RMS parameters measured at the power connector using a true RMS digital meter.
Table 6-3. Power Dissipation

Power Specification	Dissipation
Max Standby Power	9.3 watts RMS*
Max Continuous Operating Power	31.3 watts RMS*
Max Peak Operating Power	33.2 watts RMS (1 sec max)

* RMS parameters measured at the power connector using a true RMS digital meter.

Drive Performance Specifications

Table 6-4 lists the performance specifications of the PowerVault LTO-4-160 Half-Height tape drive.

Table 6-4. Drive Performance Specifications

Specification	Value
Average data access time	56 seconds
(820-m tape) from BOW (beginning of wrap)
Average rewind time	> 85 seconds
(820-m tape) from EOT (end of tape)
Capacity	800 GB (native)
Cartridge unload time	25 seconds
Error recovery	Read-after-write Reed Solomon ECC (2 levels)
Flux density (cells per mm)	13250
Head configuration	2 bumps
	16 thin-film write heads per bump
	16 MR read heads per bump
	2 MR servo heads per bump
Maximum data access time from BOW (820-m tape)	112 seconds
Maximum tape rewind speed (meters per second)	8.3
Recording density (RRL-encoded ONEs per mm)	6,760
Recording format (Ultrium 16-channel)	U-416
Recording method	0, 13/11 RLL
Recording undetectable errors	Less than 1 in 102 7 data bits
Recording unrecoverable errors	Less than 1 in 101 7 data bits
Synchronous transfer rate (burst)	160 MB/sec max
Tape drive type	LTO (Ultrium)
Tape speed (meters per second)	Up to 6.07
Track density	70 tracks per mm
Transfer rate (sustained), MB/second	120 (max, native)

Environmental Requirements