Seagate BARRACUDA 2LP - Page 9

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
7.3 Heat/power dissipation.............................................................................................. 36
7.4 Environmental limits .................................................................................................. 36
7.4.1 Temperature ................................................................................................. 36
7.4.2 Relative humidity .......................................................................................... 36
7.4.3 Effective altitude (sea level) .......................................................................... 37
7.4.4 Shock and vibration ...................................................................................... 37
7.4.5 Air cleanliness............................................................................................... 38
7.4.6 Acoustics ...................................................................................................... 38
7.5 Electromagnetic compatibility.................................................................................... 38
7.6 Mechanical specifications ......................................................................................... 39
7.6.1 Drive orientation............................................................................................ 42
7.6.2 Cooling ......................................................................................................... 42
7.6.3 Drive mounting.............................................................................................. 42
8.0 Media characteristics ....................................................................................................... 43
8.1 Media description...................................................................................................... 43
9.0 Defect and error management......................................................................................... 45
9.1 Defects and errors .................................................................................................... 45
10.0 Option/configuration headers ......................................................................................... 47
10.1 Drive ID/option select headers .................................................................................. 47
10.1.1 ST31250N/ND and ST32550N/ND configuration .......................................... 47
10.1.2 ST31250W/WD and ST32550W/WD configuration ....................................... 50
10.1.3 ST31250WC/DC and ST32550WC/DC configuration.................................... 53
10.2 Synchronized spindles interface ............................................................................... 55
10.2.1 Electrical description ..................................................................................... 55
10.3 Grounding ................................................................................................................. 57
11.0 Interface requirements ..................................................................................................... 59
11.1 General description................................................................................................... 59
11.2 SCSI interface messages supported......................................................................... 59
11.3 SCSI interface commands supported........................................................................ 60
11.3.1 Inquiry data ................................................................................................... 62
11.3.2 Mode sense data .......................................................................................... 63
11.4 SCSI bus conditions and miscellaneous features supported..................................... 66
vi Barracuda 2LP Product Manual, Rev. D
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