Seagate BARRACUDA 9 Installationsanleitung PDF herunterladen (Seite 18)

16 Barracuda 9 Installation Guide, Rev. B

Characteristics ST19171

Interface SCSI Fast-20 (also called

Ultra SCSI)

Capacity

Unformatted 11.7 Gbytes

Formatted

9.1 Gbytes

Recording

Cylinders (user) 5,274

Read/write data heads 20

Servo heads Embedded

Seek time

Average read 9.7 msec

Average write 10.7 msec

Disc rotation

RPM 7,200 ±0.5%

Average latency 4.17 msec

Internal transfer rate 80 to 124

(Mbits/sec, variable with zone)

Max sync. SCSI transfer rate

N 20 Mbytes/sec

W/WD/WC/DC 40 Mbytes/sec

Multi-segmented cache 512 Kbytes

2,048 Kbytes (optional)

Can also be operated according to SCSI-1 and SCSI-2 proto-

cols.

Standard factory units are formatted as follows:

512 data bytes per sector

9 spare sectors per cylinder

1 cylinder at the inner track reserved for spares

Includes on-board controller overhead.

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