Conventional Memories

This page is part of my Toshiba E.M.I.S. archive project, to learn more please visit the project page, Some of the files from the Toshiba BBS referenced here can also be found there.

Index

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610 PortegeCT Hard Disk Drive(s)

(see complete HDD table)

The 610CT has IBM's 720mb 2.5 inch HDD, which contains the hard disk controller(HDC). The specifications of the HDD are as follows.

-Manufacturer: IBM (DBOA-2720)

-Storage Capacity: 722mb (686.65MB) formatted

-Dimensions(width, height and depth): 69.85 x 12.5 x 100.2 mm

-Weight: 140 g (max)

-Configuration:

.Number of disk: 2

.Number of read/write head: 4

.Coding: 1-7 RLL

.Byte per sector: 512 bytes

.Sector per track: 49 ~ 83 sectors

.Sector per drive: 1,411,200 sectors

.Number of cylinder: 1,400 cylinders

-Performance:

.Rotation speed: 4,000 r.p.m.

.Data transfer rate: 26.9~39.5Mbit/sec(to/from media), 11.1MB/sec(to/from buffer)

.Track density: 6350 TPI

.Bit density: 644Mbit/sq. inch

.Flux density: 101,400 BPI

.Access Time/Track to track(physical): 3ms(typ)

/Average: 13ms(typ)

/Maximum: 25ms(typ)

.Average latency: 7.5ms

.Start time: 2.3 sec(typical), 7.5 sec(max)

.Interleave factor: 1:1

.Buffer size: 128KB

-Interface:

.Enhanced IDE

.Connector: 44pin

-Power consumption:

modePower(typical)

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Seek 2.3 W

Write 2.3 W

Read 2.3 W

Idle 0.9 W

Standby 0.3W