Seagate ST15150W/WD/WC Manuel D’Utilisation

Barracuda 4 Installation Guide, Rev. E

15

SCSI-2 Interface

1

Fast

Fast & Wide

Capacity

Unformatted

5,062 Mbytes

5,062 Mbytes

Formatted

2

4,294 Mbytes

4,294 Mbytes

Recording
Cylinders (user accessible)

3,711

3,711

Read/Write heads

21

21

Servo heads

1

1

Avg bytes/track

64,160

64,160

Modulation

RLL 1,7 code

RLL 1,7 code

Synchronous SCSI rate

Max burst transfer

10 Mbytes/sec 20 Mbytes/sec

Seek time

3

Average read

8.0 msec

8.0 msec

Average write

9.0 msec

9.0 msec

Disc rotation

RPM

7,200

7,200

Average latency

4.17 msec

4.17 msec

Multi-segmented cache

Physical

1,024 Kbytes

1,024 Kbytes

Available to user

977 Kbytes

977 Kbytes

1

Can also be operated according to SCSI-1 protocol.

2

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

3

Not including on-board controller overhead.