4 mass storage devices, Flexible disk drives, Hard disk drives – HP XU800 User Manual

Page 87: Chapter 4, Mass storage devices

Mass Storage Devices

This chapter describes the mass storage devices that are supplied with the
PC Workstation. Refer to the diagram on

for the position of the

different mass storage devices in the PC Workstation. This chapter also
summarizes the pin connections on internal and external connectors.

HP product numbers and replacement part numbers for mass storage
devices are listed in the Service Handbook Chapter, which can be accessed
from the HP World Wide Web site at the following address:

http://www.hp.com/go/kayaksupport

Flexible Disk Drives

A 3.5-inch, 1.44 MB flexible disk drive is supplied in the front-access shelf.

Hard Disk Drives

The following table lists the 3.5-inch (1-inch high) hard disk drives (which
are subject to change) that may be supplied (type and quantity depends on
model) on internal shelves, connected to the SCSI or IDE controller.

Cheetah 18LP

SCSI Seagate

(10 krpm)

Atlas (Tornado)

SCSI Quantum

(10 krpm)

Barracuda IDE

Seagate

(7.2 krpm)

Capacity

9.1 GB and 18 GB

15 GB

Interface

Ultra2 Wide SCSI

Ultra160

UltraIDE ATA/66

External peak transfer rate

80 MB/s

160 MB/s

66 MB/s

Average seek time (read)

5.4 ms

7.6 ms

Internal formatted transfer rate (MB/s)

29.5 max.

20 to 29

Number of discs/heads

9.1 GB: 3/6

18 GB: 6/12

9.1 GB: 3/6

18 GB: 6/12

15 GB: 2/4

Buffer size

1 MByte

2 MBytes

512 KBytes