. Various DSAA and DSAS Datasheet free download

File name DSAA and DSAS Datasheet.pdf

Hdd_dsa.txt 3 1/2-INCH 540 MB and 720 MB LOW PROFILE DISK DRIVES MODELS DSAA-3540, 3720 DSAS-3540, 3720 _______________ AN OEM OFFERING FROM IBM This family of drives brings IBM's industry-leading Magneto-Resistive head technology to the desktop computer marketplace, offering superior performance and outstanding reliability. IBM's well-proven advanced head and disk technology delivers higher capacities--up to 365 MB per disk on these models--with fewer components. Today's desktop PC users are demanding more performance and higher capacities to effectively manage database, spreadsheet, desktop publishing, and graphic applications in multitasking environments. The mainstream market is embracing 540 MB and larger disk drives at an accelerating pace. IBM is already there with this family of drives. The higher areal density (358 b/sq in) gives a higher average data rate with reduced "tail-off" on the inner bands. These 3.5" drives spin at 4500 RPM and operate at an average access time of 12 ms. The high linear recording density provides an outstanding minimum sustained data rate of 2.5 MB/sec. Performance is further enhanced by a 128 KB segmented buffer (256 KB option) with write cache and read look-ahead. The drives are available with either ATA-2 (11.1 MB/sec) or Fast SCSI-2 (10.0 MB/sec) interfaces. The AT* drives support LBA mode and extended cylinder addressing in addition to low power dissipation, AT and SCSI power management commands for "Green PC" applications are also supported. QUALITY AND RELIABILITY In line with IBM's outstanding commitment to quality, reliability is again improved to over 300,000 power-on hours MTBF. These drives undergo extensive testing to ensure compatibility across a broad spectrum of hardware platforms and operating systems. HIGHLIGHTS - 540 MB and 720 MB capacities - 12 ms average seek - 4500 RPM spin rate - Low power--2.7 W at idle - ATA-2 and SCSI-2 F interfaces - AT interface data rate of 11.1 MB/sec (P10 Mode-3) - SCSI-2 F interface data rate of 10.0 MB/sec - 300,000 power-on hours MTBF Page 1 Hdd_dsa.txt - 128 KB segmented data buffer (256 KB option) - Write cache - ECC on-the-fly - MR head technology PRODUCT DESCRIPTION _______________________________________________________________________________ 3 1/2" 540 MB and 720 MB Disk Drive DSAA-3540/ 3270 DSAS-3540/ 3720 _______________________________________________________________________________ Configuration Interface ATA-2 (IDE) Fast SCSI-2 Device Capacity Formatted 548/730 MB (1) Sector Size 512 Bytes Recording Zones 8 User Cylinders 3875 Data Heads