Seagate ST3750840SCE, ST3250820SCE, ST3300820SCE, ST3750640SCE manual Environmental specifications

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2.9Environmental specifications

2.9.1Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 75°C (167°F) within the operating ambient conditions. Rec- ommended measurement locations are shown in Figure 5 on page 27.

Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 112°F (44°C) at 10,000 feet (3,048 meters).

Operating:
ST3320820SCE, ST3300820SCE and ST3250820SCE	0° to 65°C (32° to 149°F)
ST3500830SCE and ST3400820SCE	0° to 62°C (32° to 143.6°F)
ST3750640SCE and ST3750840SCE	0° to 60°C (32° to 140°F)

Nonoperating:	–40° to 70°C (–40° to 158°F)

2.9.2Temperature gradient

Operating:	20°C per hour (68°F per hour max), without condensation

Nonoperating:	30°C per hour (86°F per hour max)

2.9.3Humidity

2.9.3.1Relative humidity

Operating:	5% to 90% noncondensing (30% per hour max)

Nonoperating:	5% to 95% noncondensing (30% per hour max)

2.9.3.2Wet bulb temperature

Operating:	37.7°C (99.9°F max)

Nonoperating:	37.7°C (99.9°F max)

2.9.4Altitude

Operating:	–60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)

Nonoperating:	–60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)

2.9.5Shock

All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied in the X, Y or Z axis.

2.9.5.1Operating shock

These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 63 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second.

18	DB35.3 Series Serial ATA Product Manual, Rev. D

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Contents

DB35.3 Series Serial ATA Revision history Revision Date Sheets affected or commentsContents DB35.3 Series Serial ATA Product Manual, Rev. D List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summary tablesDrive specifications summary for 750 Gbyte models Drive specification ST3750640SCE ST3750840SCEDB35.3 Series Serial ATA Product Manual, Rev. D Drive specifications summary for 500 and 400 Gbyte models Drive specification ST3500830SCE ST3400820SCEFollowing web Drive specifications summary for 320 and 300 Gbyte models Drive specification ST3320820SCE ST3300820SCEDB35.3 Series Serial ATA Product Manual, Rev. D Drive specifications summary for 250 Gbyte models Drive specification ST3250820SCEInformation for your drive Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Physical characteristics Drive specificationRecording and interface technology 750GB 500GB 400GB 320GB 300GB 250GB Power specifications Seek time Start/stop times Operating power and current Idle mode powerStandby mode DC power requirementsPower-management modes Active modePower modes Heads Spindle Buffer Conducted noiseIdle mode Sleep modeIdle and Standby timers Environmental specifications Nonoperating shock Disc models 4 Disc modelsVibration Operating vibrationAcoustics Fluid Dynamic Bearing FDB motor acousticsIdle CE seek profile Electromagnetic immunity ReliabilityAgency certification Korean RRL Australian C-Tick N176FCC verification Environmental protection RoHS MCVPage Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingDB35.3 Series Serial ATA Product Manual, Rev. D Serial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Identify Device command Word Description ValueXx07H 159 160 ATA-reserved 0000H 254 255 Integrity word XxA5H Description if bit is set to Bit Word Bit WordSet Features command Set Features command values3 S.M.A.R.T. commands M.A.R.T. commandsCode in features register A.R.T. command Internet Presales SupportTechnical Support Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index RRL Sata DB35.3 Series Serial ATA Product Manual, Rev. D Page Seagate Technology LLC