IBM 22P6979 - Manual (Page 26)

The following table lists the environmental specifications for the CD-RW drive. You
can mount the drive vertically or horizontally.
Environmental requirements
Environmental Requirements:
Specification Operational Nonoperational
Temperature (noncondensing) +5° C to +45° C
(+41° F to +113° F)
-40° C to +60° C
(-40° F to + 140° F)
Relative humidity
(noncondensing) 8% to 80% 5% to 90%
Write/Read speeds
The following table lists the write/read speeds for the CD-RW drive.
Drive Write/Read Speeds:
Function Supported Speed
Read (CD-ROM/CD-R disc) 17-40x (CAV)
Read (CD-RW/Audio disc) 14-32x (CAV)
Write (CD-R disc) 17-40x (PCAV)
Write (CD-RW disc) 4x, 10x, 12x
Media Speed Compatibility
The following table lists the media speed compatibility for the CD-RW drive.
Function CD-R Media Compatibility CD-RW Media
Compatibility
Reads ALL ALL
Writes 4x, 8x, 12x, 16x, 24x, 32x, 40x Multispeed (1x2x4x, 4x,
1x-4x)
High Speed
Note: Media or drive speed must support the listed write speed of the media.
Drive-performance specifications
The following table lists the performance specifications of the CD-RW drive.
Drive performance:
Feature Specification
Burst data transfer rate 16.7 MB (1 MB is approximately 1 000
000 bytes of data) per second (ATA PIO
Mode 4) 16.7 MB per second (ATA
multi-word DMA Mode 2), 33.3 MB per
second (Ultra DMA Mode 2)
Average access time (including latency) 100 ms (17-40x, CAV)
Cache memory (Read/Write) 2 MB
16 40X/12X/40X Max CD-RW Drive: User’s Guide