Table Of Contents - Seagate ST15150N - Barracuda 4.3 GB Hard Drive Product Manual

1.0 Scope ................................................................................................................................... 1
2.0 Applicable standard and reference documentation ......................................................... 3
2.1 Standards .................................................................................................................... 3
2.2 Applicable reference documents .................................................................................. 3
3.0 General description ............................................................................................................ 5
4.0 Standard features ............................................................................................................... 7
4.1 Performance ................................................................................................................ 7
4.1.1 Reliability ......................................................................................................... 7
4.2 Unformatted and Formatted Capacities ....................................................................... 8
4.3 Options ........................................................................................................................ 8
4.3.1 Front panel ....................................................................................................... 8
4.3.2 Single-unit shipping pack ................................................................................. 8
4.3.3 Barracuda 4 Installation Guide ......................................................................... 8
4.3.4 Adaptor accessory frame kit ............................................................................ 8
4.4 Installation .................................................................................................................... 9
5.0 Performance characteristics ............................................................................................. 11
5.1 Internal drive characteristics ....................................................................................... 11
5.2 SCSI seek performance characteristics ...................................................................... 11
5.2.1 Seek time ........................................................................................................13
5.2.2 Format drive command execution time ...........................................................13
5.3 General performance characteristics ..........................................................................14
5.4 Start/stop time .............................................................................................................15
5.5 Prefetch/multi-segmented cache control .....................................................................15
5.6 Caching write data ......................................................................................................17
5.7 Synchronized spindle operation ..................................................................................17
6.0 Reliability specifications ...................................................................................................21
6.1 Error rates ...................................................................................................................21
6.1.1 Environmental interference .............................................................................21
6.1.2 Write errors .....................................................................................................21
6.1.3 Seek errors .....................................................................................................22
6.2 Reliability and service .................................................................................................22
6.2.1 Mean time between failures (MTBF) ...............................................................22
6.2.2 Air flow ............................................................................................................22
6.2.3 Preventive maintenance .................................................................................30
6.2.4 Service life ......................................................................................................30
6.2.5 Service philosophy ..........................................................................................30
6.2.6 Installation .......................................................................................................30
6.2.7 Service tools ...................................................................................................30
6.2.8 Hot plugging Barracuda 4 disc drives .............................................................31
7.0 Physical/electrical specifications .....................................................................................33
7.1 AC power requirements ..............................................................................................33
7.2 DC power requirements ..............................................................................................33
7.2.1 Conducted noise immunity ..............................................................................34
7.2.2 Power sequencing ..........................................................................................34
7.2.3 12V current profile ..........................................................................................35
Contents