Seagate ST32272W Guía de instalación descargar pdf (Pagina 17)

Barracuda 4XL Installation Guide, Rev. B 15

Table 1. Drive characteristics

Interface Ultra SCSI [1]

Capacity Formatted [2] Unformatted

ST34572 4.55 Gbyte [2] 6.26 Gbyte

ST32272 2.26 Gbyte [2] 3.13 Gbyte

Recording

Cylinders (user) 6,311

Read/write data heads

ST34572 8

ST32272 4

Access time [3]

Average read 9.4 msec

Average write 10.4 msec

Disk rotation

RPM 7,200 r/min

Average latency 4.17 msec

Internal transfer rate (variable with zone)

ST34572 92–140 Mbits/sec

ST32272 92–140 Mbits/sec

Maximum synchronous SCSI transfer rate

N model 20 Mbytes/sec

W/WD/WC/DC models 40 Mbytes/sec

Multi-segmented cache 480 Kbytes

[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

sparing equivalent to 118 spare sectors per six cylinder region.

Spares are located at the end of each sparing region.

[3] Includes controller overhead.

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Seagate ST32272W Guía de instalación Pagina 17