User manual HITACHI TRAVELSTAR (DVAA) DATASHEET

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Manual abstract: user guide HITACHI TRAVELSTAR (DVAA)DATASHEET

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[. . . ] Dxax. txt 2 1/2-INCH 270, 344, 405, 540 AND 810 MB DISK DRIVES MODELS DVAA-2810 DVAS-2810 DHAS-2270, -2344, -2405, DHAA-2270, -2344, -2405, -2540 ______________________________ AN OEM OFFERING FROM IBM The latest in IBM's 2. 5-inch line features expanded capacity in a notebook product, with 810 MB available in a 3-platter design. [. . . ] This frees up substantial space for usable data, since the ID information can occupy as much as 10 percent of each track on the disk. Besides increasing storage density, No-ID sector format can also improve disk drive performance and reliability. Performance is further enhanced by a 64 KB segmented buffer with write-cache and read look ahead. The drives support both AT (IDC) at 8. 3 MB/sec and Fast-SCSI-2 at 10 MB/sec. The AT drives support LBA mode and extended cylinder addressing. In addition to the low power ratings, the drives also support AT and SCSI power management commands for "green PC" applications. QUALITY AND AVAILABILITY Advanced worldwide manufacturing facilities provide multi-site, high-volume production capacity. HIGHLIGHTS MR head technology 17 mm high AT (IDE) and Fast SCSI-2 interfaces 3800 RPM 14 msec average seek 8. 3 MB/sec data rate (AT) 10. 0 MB/sec data rate (SCSI-2) 300, 000 poh MTBF Low power for extended notebook battery life MCC compliance PRODUCT DESCRIPTION _______________________________________________________________________________ 2 1/2" 270, 344, 405, 540 & 810 MB Drives and 810 MB Disk Drives Page 1 Dxax. txt _______________________________________________________________________________ Configuration Interface AT/Fast SCSI-2 Device Capacity Formatted 270/344/405/540/810 MB (1) Sector Size 512 Bytes Recording Zones 8 User Cylinders 2788 Data Heads 2/3/3/4/6 Disks 1/2/2/2/3 Areal Density Average 493 Mb/sq in Recording Density Maximum 93100 BPI Track Density 5300 TPI _______________________________________________________________________________ Performance Rotational Speed 3800 RPM Media Transfer Rate 24. 9 - 36. 0 Mbits/sec Data Buffer Read 32 KB/Write 32 KB Interface Transfer Rate (Max) AT 8. 3 MB/sec SCSI 10. 0 MB/sec (sync) Latency Average 7. 9 msec Seek Time (Typical) Average (Read) 14 msec Track to Track 4. 0 msec Full Track 23 msec _______________________________________________________________________________ Reliability MTBF Projected power-on hours 300, 000 _______________________________________________________________________________ Power Requirements + 5 VDC + or - 5% Dissipation (typical) Start Up (Maximum Peak) 4. 7 Watts Seek 2. 0 - 2. 8 Watts Read/Write 2. 8 Watts Idle 1. 2 Watts Shutdown 0. 4 Watts _______________________________________________________________________________ Physical Size Height 17 mm Width 70 mm Depth 100 mm Weight 180 g _______________________________________________________________________________ Operating Non-Operating _______________________________________________________________________________ Environmental Characteristics Ambient Temperature 5 to 55 degrees C -40 to 65 degrees C Relative Humidity Non-Condensing 8% to 90% 5% to 95% Maximum Wet Bulb Non-Condensing 29. 4 degrees C 40 degrees C Shock Half-sine-wave 20 G/3 msec 250 G/2 msec Vibration Random (RMS) 0. 67 G (5-500 Hz) 1. 04 G (2-200 Hz) _______________________________________________________________________________ Page 2 Dxax. txt (1) 1 MB=1, 000, 000 Bytes Product Description data represents IBM's design objectives and is provided for comparative purposes; actual results may vary depending on a variety of factors. [. . . ] Copywrite International Business Machines Corporation 1994 * IBM and AT and No-ID are trademarks or registered trademarks of International Business Corporation Page 3 [. . . ]

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