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16
Table 1.
Drive characteristics
Interface
Capacity
Formatted [2]
Max. data blocks
Recording
Cylinders (user)
Read/write data heads
Access time [3]
Average read
Average write
Disk rotation
RPM
Average latency
Internal transfer rate
(variable with zone)
Maximum synchronous SCSI transfer rate
N model
W/WD/WC models
LW/LC
[1] Can also be operated according to SCSI-1 and SCSI-2 protocols.
Referred to also as "SCSI Fast-20."
[2] Standard factory units are formatted 512 data bytes per sector with
spare tracks reserved for reallocating bad sectors.
[3] Includes controller overhead.
Barracuda 18 Installation Guide, Rev. C
UltraSCSI [1]
18.21 Gbyte [2]
21EB38Fh
7,501
20
7.9 msec
8.7 msec
7,200 r/min
4.17 msec
120–190 Mbits/sec
20 Mbytes/sec
40 Mbytes/sec
80 Mbytes/sec
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