IBM 28L2234 manual Write/Read speeds, Drive-performance specifications

Write/Read speeds

The	following		table lists		the CD-ReWritable		drive’s		write/read speeds
for	different		media.
	Drive	Write/Read		Speeds:
	Function				Speed
	Read (CD-ROM/CD-R			disc)	1X,	2X,	4X,	8X,	10-24X (CAV)
	Read	(CD-RW	disc)		1X,	2X,	4X,	8X
	Read (unfinalized CD-R/CD-RW				1X,	2X,	4X
	disc)
	Write (CD-R disc)				1X,	2X,	4X
	Write	(CD-RW	disc)		2X

Drive-performance specifications

The	following	table	lists	the	performance	specifications		of	the
CD-ReWritable		drive.
	Drive performance:
	Feature				Specification
	Sustained data transfer		rate		150	KB	per second (Mode 1, 1X,
					read/write)
					1500-3600		KB per	second	(Mode 1,
					10-24X		CAV)

Burst

data

transfer

rate

11.1

7MB

per

second (ATA

PIO

Mode

3)

13.3

MB per

second

(ATA

Multi

Word

DMA

Mode)

Average access

time

(including latency)

150

ms

(10-24X,

CAV)

Cache

memory (Read/Write)

1

MB

Disc

diameter

12

cm

(8

cm

Read

only)

Rotational

speed

innermost

track

600

rpm

(1X)

1200

rpm

(2X)

2400

rpm

(4X)

4800

rpm

(8X)

5000 rpm (10-24X, CAV)

Rotational

speed

outermost

track

200

rpm

(1X)

400

rpm

(2X)

800

rpm

(4X)

5000

rpm

(24X)

Mean

time

between

failures

(MTBF)

100 000

POH

(duty

25%)

7 The formatted capacity of 1 MB is approximately 1 000 000 bytes of data.

3-12 IBM 2X/4X/24X CD-ReWritable Internal IDE Option Kit