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16
Characteristics
Interface
Capacity
Unformatted
2
Formatted
Recording
Cylinders (user)
Read/write data heads
Servo heads
3
Seek time
Average read
Average write
Disc rotation
RPM
Average latency
Internal transfer rate
(Mbits/sec, variable with zone)
Max sync. SCSI transfer rate
N
W/WD/WC/DC
Multi-segmented cache
1
Can also be operated according to SCSI-1 and SCSI-2 proto-
cols.
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
Includes on-board controller overhead.
Barracuda 9 Installation Guide, Rev. B
ST19171
SCSI Fast-20 (also called
Ultra SCSI)
11.7 Gbytes
9.1 Gbytes
5,274
20
Embedded
9.7 msec
10.7 msec
7,200 ±0.5%
4.17 msec
80 to 124
20 Mbytes/sec
40 Mbytes/sec
512 Kbytes
2,048 Kbytes (optional)
1
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