Seagate HAWK 4, Product Manual

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vi Product Manual - Hawk 4 Family SCSI-2 (Volume 1), Rev. F
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Table of contents
1.0 Scope .......................................................................................................................................... 1
2.0 Applicable standards and reference documentation .............................................................. 2
2.1
Standards ....................................................................................................................... 2
2.2 Electromagnetic Compliance for the European Union ..................................................... 2
2.3 Applicable reference documents ..................................................................................... 2
3.0 General description ................................................................................................................... 3
4.0 Standards features .................................................................................................................... 5
4.1.
Performance ................................................................................................................... 5
4.1.1 Reliability ............................................................................................................ 5
4.2 Unformatted and formatted capacities ............................................................................ 6
4.3 Options (factory installed) ............................................................................................... 6
4.4 Optional accessories (user installed) .............................................................................. 6
4.5 Installation ....................................................................................................................... 7
5.0 Performance characteristics ..................................................................................................... 8
5.1
Internal drive characteristics (transparent to user) .......................................................... 8
5.2 SCSI drive Seek, Read and Write performance characteristics (Visible to User) ............ 8
5.2.1
Access time ........................................................................................................ 8
5.2.2 Format drive command execution time ............................................................... 9
5.2.3 Read data command execution time ................................................................... 9
5.2.4 Write data command execution time ................................................................... 9
5.3 Generalized performance characteristics ........................................................................ 10
5.3.1
Notes for sections 5.2 and 5.3 ............................................................................ 11
5.4 Start/stop time ................................................................................................................ 12
5.5 Prefetch/multi segmented cache control ......................................................................... 12
5.5.1
Cache operation ................................................................................................. 12
5.5.2 Prefetch operation .............................................................................................. 13
5.6 Caching write data .......................................................................................................... 14
6.0 Reliability specifications ........................................................................................................... 15
6.1
Error rates ....................................................................................................................... 15
6.1.1
Read errors ........................................................................................................ 15
6.1.2 Environmental interference ................................................................................ 15
6.1.3 Write errors ........................................................................................................ 16
6.1.4 Seek errors ........................................................................................................ 16
6.2 Reliability and service ..................................................................................................... 16
6.2.1
Mean time between failure ................................................................................. 16
6.2.2 Preventive maintenance ..................................................................................... 16
6.2.3 Service life ......................................................................................................... 16
6.2.4 Service philosophy ............................................................................................. 17
6.2.5 Installation .......................................................................................................... 17
6.2.6 Service tools ...................................................................................................... 17
6.2.7 Product Warranty ............................................................................................... 17