Physical Specifications, Power | Sun Microsystems HP LTO4 instruction

Specifications

TABLE 1-1provides a comparison of tape drive specifications.

TABLE 1-1Tape Drive Specifications

	LTO2	LTO3	LTO4

Physical Specifications

Height	8.25 cm (3.25 in.)	8.25 cm (3.25 in.)	8.25 cm (3.25 in.)

Width	14.6 cm (5.75 in.)	14.6 cm (5.75 in.)	14.6 cm (5.75 in.)

Length (depth)	21.38 cm (8.4 in.)	21.38 cm (8.4 in.)	21.38 cm (8.4 in.)

Weight	2.1 kg (4.6 lb)	2.24 kg (4.94 lb)	2.24 kg (4.94 lb)

Performance Specifications

Capacity (native)	200 GB	400 GB	800 GB

Transfer rate (native)	30 MB/s	80 MB/s	120 MB/s

Streaming range (native)	13.7 to 35.6 MB/s	27 to 80 MB/s	40 to 120 MB/s

Data Buffer size	64 MB	128 MB	128 MB

Number of tracks	512	704	896

Load to ready *	15–24 sec	19 sec	19 sec

Access time-average (to first file)	64–75 sec	72 sec	62 sec

Tape speed (meters per second)	5.50 m/s	5.32 m/s	7.0 m/s

Tape read/write speed	6.20 m/s	5.32 m/s	6.20 m/s

Rewind time (maximum/average)	104/52 sec	98/49 sec	124 sec

Unload time	13–19 sec	19 sec	19 sec

Cleaning time		58 to 152 sec

Interface Support (SCSI)	Ultra3 SCSI (LVD)	Ultra-320 (LVD)	Ultra-320 (LVD)
(Fibre Channel)	FC1	FC2	FC4

MTBF (100% duty cycle)	250,000 hrs	250,000 hrs	250,000 hrs

Media/Format Compatibility

Read	LTO1, LTO2	LTO 1, 2, 3	LTO 2, 3, 4

Write	LTO1, LTO2	LTO2, LTO3	LTO3, LTO4

Note: HP drives support the LTO standard for backward compatibility, which is to write back one generation and read back two generations.

Power

Consumption	38 W	35 W	30 W

Fibre Channel: FC1 = Fibre Channel 1Gb, FC2 = Fibre Channel 2Gb, FC4 = Fibre Channel 4Gb

Note: * Encryption-capable and un-initialized WORM cartridges can take longer to load.

316196601 • Revision: A

Chapter 1 Introduction 3