Getting Started with Stac Replica Backup

43
A Tape Drive Specifications
This chapter provides the technical specifications for the HP SureStore T4 tape
drive and lists part numbers for compatible tape cartridges, SCSI cables, and
accessories.
Interface
SCSI-2
Backup Speed
Data transfer rate Sustained: 514 KB/second
Burst: 3 MB/second
Tape speed Read-write: 79 ips
Search/rewind: 120 ips
Retension time 740-foot tape, 150 seconds
400-foot tape, 81 seconds
Tape Format
Format QIC-3095
Media Travan 4 high-capacity mini-cartridges (QIC-3095)
HP Colorado 5 GB tapes
QIC-Wide mini-cartridges (QIC-3095)
Number of tracks 73
Bit density 67,733 bpi
Encoding method RLL1,7
Error Correction Level-6 Reed-Solomon
Reliability Specifications
Hard error rate: <1 in 1015 bits read with Reed-Solomon ECC
Predicted mean time between failures:
Internal: 250,000 hours
External: 200,000 hours