Seagate Hawk 2 ST11900N, Product Manual

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vi Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. C
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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 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
Seek command execution 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 11
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
5.7 Synchronized spindle operation ....................................................................................... 14
6.0 Reliability specifications ............................................................................................................ 18
6.1
Error rates ........................................................................................................................ 18
6.1.1
Read errors ....................................................................................................... 18
6.1.2 Environmental interference ................................................................................ 18
6.1.3 Write errors ....................................................................................................... 19
6.1.4 Seek errors ........................................................................................................ 19
6.2 Reliability and service ...................................................................................................... 19
6.2.1
Mean time between failure ................................................................................. 19
6.2.2 Preventive maintenance .................................................................................... 19
6.2.3 Service life ......................................................................................................... 19
6.2.4 Service philosophy ............................................................................................ 20
6.2.5 Installation ......................................................................................................... 20
6.2.6 Service tools ...................................................................................................... 20
6.2.7 Product Warranty ............................................................................................... 20