IBM DTLA-307075 Hard Drive Specifications - Page 3

Table of contents Figures ix 1.0 General 1 1.1 Glossary 1 1.2 General caution 2 1.3 References 2 2.0 General features 3 Part 1. Functional specification 5 3.0 Fixed disk subsystem description 7 3.1 Control Electronics 7 3.2 Head disk assembly 7 3.3 Actuator 7 4.0 Drive characteristics 9 4.1 Default logical drive parameters 9 4.2 Data sheet 10 4.3 Drive organization 10 4.3.1 Drive format 10 4.3.2 Cylinder allocation 11 4.4 Performance characteristics 11 4.4.1 Command overhead 12 4.4.2 Mechanical positioning 12 4.4.3 Drive ready time 14 4.4.4 Data transfer speed 15 4.4.5 Buffering Operation (Look ahead/Write cache 15 4.4.6 Throughput 16 4.4.7 Operating modes 17 5.0 Defect flagging strategy 19 6.0 Data integrity 21 6.1 Data loss at Power off 21 6.2 Write cache 21 6.3 Equipment status 21 7.0 Specification 23 7.1 Electrical interface 23 7.1.1 Connectors 23 7.1.2 Signal definition 24 7.1.3 Interface logic signal levels 27 7.2 Signal timings 28 7.2.1 Reset timings 28 7.2.2 PIO timings 29 7.2.3 Multiword DMA timings 31 7.2.4 Ultra DMA timings 32 7.2.5 Addressing of registers 40 7.2.6 Cabling 40 7.3 Jumper settings 41 7.3.1 Jumper pin assignment 41 7.3.2 Jumper positions 42 Deskstar 40GV & 75GXP hard disk drive specifications iii