User manual HITACHI TRAVELSTAR LP DATASHEET

[. . . ] Travel. txt 2 1/2-INCH TRAVELSTAR LP* 360, 540 and 720 MB LOW PROFILE DISK DRIVES MODELS DBOA-2360, -2540, -2720 ______________________________ AN OEM OFFERING FROM IBM IBM's new Travelstar LP family of low-profile 2. 5-inch drives packs 360 MB, 540 MB, or 720 MB of data into a slimline 12. 5 mm high package weighing only 140 grams. [. . . ] To ensure data integrity in transport, Travelstar LP drives undergo extensive testing and will withstand 100 Gs of operating shock and non-operating shocks of 500 Gs--the highest in the industry. In addition, these drives are engineered to withstand over 52, 000 contact start-stop cycles, and maintain over 300, 000 poh MTBF. Conformance to the mounting standards of the Manufacturers Compatibility Committee (MCC) and a standard AT* interface makes integration easy. The Travelstar LP family features and average access time of 13 ms and incorporates advanced power management circuits to minimize current draw--a critical consideration in battery-powered mobile computing systems. QUALITY AND RELIABILITY All IBM drives are manufactured to stringent standards for quality and performance, with sensitive components assembled in a rigidly controlled, clean environment. Extensive quality control and testing procedures are used throughout the manufacturing process to assure product reliability and data integrity. Worldwide IBM manufacturing facilities provide multisite, high-volume production capability. HIGHLIGHTS - 360, 540 and 720 MB capacity - Only 12. 5mm high - 500 Gs non-operating shock Page 1 Travel. txt - 100 Gs operating shock MR head technology No-ID* sector formatting ATA-2 (IDE) interface) 11. 1 MB/sec data rate 13 ms average seek 4000 RPM 300, 00 poh MTBF Low power for extended notebook battery life MCC Compliance PRODUCT DESCRIPTION _______________________________________________________________________________ 2 1/2" Travelstar LP 360, 540 and DBOA-2360/ -2540/ -2720 720 MB Disk Drives _______________________________________________________________________________ Configuration Interface ATA-2 (IDE) Device Capacity Formatted 360/540/720 MB(1) Sector Size 512 Bytes Recording Zones 8 User Cylinders 3478 Data Heads 2/3/4 Disks 1/2/2 Areal Density Maximum 644 Mb/sq in Recording Density Maximum 101, 400 BPI Track Density 6350 TPI _______________________________________________________________________________ Performance Rotational Speed 4000 RPM Media Data Rate 26. 9 (Inner), 39. 5 (Outer) Mbits/sec Interface Transfer Rate Maximum (AT only) 11. 1 MB/sec (P10 Mode 3) Data Buffer Read Look-Ahead and Write 32 KB (read) 32 KB (write) Latency Average 7. 5 msec Seek Time (Typical Read) Average (Read) 13 msec Track to Track 4 msec Full Track 23 msec _______________________________________________________________________________ Reliability MTBF Projected power-on hours 300, 000 Contact Start-stop Cycles 52, 000 _______________________________________________________________________________ Power Requirements +5 VDC plus or minus 5%, Dissipation (typical) Start Up (Maximum Peak) 0. 93 Amps Seek 2. 3 Watts Read/Write 2. 3 Watts Idle 0. 95 Watts Standby 0. 3 Watts Sleep 0. 1 Watts _______________________________________________________________________________ Physical Size Height 12. 5 mm Page 2 Travel. txt Width 70 mm Depth 100 mm Weight Maximum 140 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 100 G/2 msec 500 G/2msec Vibration Random (RMS) 0. 67 G (5-500 Hz) 1. 04 G (2-200 Hz) _______________________________________________________________________________ (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, Travelstar LP, AT and No-ID are trademarks or registered trademarks of International Business Machines Corporation. Page 3 [. . . ]