Seagate BARRACUDA 4LP ST34571N/W/WC/WD/DC Manual descargar pdf (Pagina 15)

Barracuda 4LP Product Manual, Rev. D 5

3.0 General description

Barracuda 4LP drives combine magnetoresistive (MR) heads, partial response/maximum likelihood (PRML)

read channel electronics, embedded servo technology, and a SCSI-3 (Fast-20) interface to provide high perfor-

mance, high capacity data storage for a variety of systems including engineering workstations, network serv-

ers, mainframes, and supercomputers.

Fast-20 (also known as Ultra SCSI) is a negotiated transfer rate. This transfer rate will occur only if your host

adapter also supports Fast-20 data transfer rates. This drive also operates at SCSI-1 and SCSI-2 data transfer

rates for backward compatibility with non-Fast-20 capable SCSI host adapters.

Table 1 lists the features that differentiate the various Barracuda 4LP SCSI-3 Fast-20 (Ultra SCSI) models.

Table 1: Drive model number vs. differentiating features

The drive records and recovers data on 3.5-inch (86 mm) non-removeable discs.

The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI-2 interface

specifications to the extent described in this manual (volume 1), which defines the product performance char-

acteristics of the Barracuda 4LP family of drives, and the

SCSI Interface Product Manual

(volume 2), part num-

ber 77738479, which describes the general interface characteristics of this and other families of Seagate SCSI

drives.

Model number

Number

of Heads I/O circuit type

Number of I/O

connector pins

Number of I/O

data bus bits

ST34371N 10 single-ended 50 8

ST34371W 10 single-ended 68 16

ST34371WD 10 differential 68 16

ST34371WC 10 single-ended 80 16

ST34371DC 10 differential 80 16

ST32171N 5 single-ended 50 8

ST32171W 5 single-ended 68 16

ST32171WD 5 differential 68 16

ST32171WC 5 single-ended 80 16

ST32171DC 5 differential 80 16

ST34571N 10 single-ended 50 8

ST34571W 10 single-ended 68 16

ST34571WD 10 differential 68 16

ST34571WC 10 single-ended 80 16

ST34571DC 10 differential 80 16

ST32271N 5 single-ended 50 8

ST32271W 5 single-ended 68 16

ST32271WD 5 differential 68 16

ST32271WC 5 single-ended 80 16

ST32271DC 5 differential 80 16

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 93 94

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