Seagate ST1000NM0043, ST1000NM0063, ST2000NM0023, ST2000NM0033, ST2000NM0043, ST2000NM0053, ST3000NM0023, ST3000NM0033, ST3000NM0043, ST3000NM0053, ST3000NM0063, ST32000444SSIM, ST32000645NS, ST32000646NS, ST32000647NS, ST4000NM0023, ST4000NM0033, ST4000NM0043, ST4000NM0053, ST4000NM0063 11.2 Cooling

50 Constellation ES Series SAS Product Manual, Rev. F

11.2 Cooling

Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding

the drive will not exceed temperature conditions specified in Section 7.5.1, "Temperature."

The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and

head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temper-

ature measurement guidelines described in Section 7.5.1.

Forced air flow may be required to keep temperatures at or below t he temp eratures specified in Sect ion 7.5.1

in which case the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is

created while providing air flow to the electronics and HDA. Also, the shortest possible path between the air

inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources

within the rack, cabinet, or drawer environment.

If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 15. The air-flow pat-

terns are created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction,

convection, or other forced air-flow patterns are acceptable as long as the temperature measurement guide-

lines of Section 7.5.1 are met.

Figure 15. Air flow

Above unit

Under unit

Note. Air flows in the direction shown (back to front)

or in reverse direction (front to back)

Above unit

Under unit

Note. Air flows in the direction shown or

in reverse direction (side to side)

Contents

Main Constellation ES Series SAS Revision history Contents Page Page Page Constellation ES Series SAS Product Manual, Rev. F v List of Figures Page 1.0 Seagate Technology support services 2.0 Scope 3.0 Applicable standards and reference documentation 3.1 Standards Page 3.2 Reference documents 4.0 General description 4.1 Standard features 4.2 Media description 4.3 Performance 4.4 Reliability 4.5 Formatted capacities 4.6 Programmable drive capacity 4.7 Factory-installed options 10 Constellation ES Series SAS Product Manual, Rev. F 5.0 Performance characteristics 5.1 Internal drive characteristics 5.2 Seek performance characteristics 5.3 Start/stop time 5.4 Prefetch/multi-segmented cache control 5.5 Cache operation Page 6.0 Reliability specifications 6.1 Error rates 6.2 Reliability and service Page Page Page Page Page 7.0 Physical/electrical specifications 7.1 PowerChoiceTM power management 7.2 AC power requirements 7.3 DC power requirements Constellation ES Series SAS Product Manual, Rev. F 23 Table 2: 2000GB drive (Standard & SED model) DC power requirements 24 Constellation ES Series SAS Product Manual, Rev. F Table 3: 1000GB drive (Standard & SED model) DC power requirements Page Page Page Page Page 30 Constellation ES Series SAS Product Manual, Rev. F 7.4 Power dissipation 2TB models in 3Gb operation ST32000444SS CU RRENT / PO WE R vs T HRO UGHP UT (S A S - 3.0GB) Random 8 Block Reads Page 32 Constellation ES Series SAS Product Manual, Rev. F 1TB models in 3Gb operation Figure 6. 1TB models (3Gb) DC current and power vs. input/output operations per second ST31000424SS CU RRE NT /PO W ER vs T HR OUG HP UT (SAS - 3.0GB) Random 8 Blo c k Reads Page 34 Constellation ES Series SAS Product Manual, Rev. F 500GB models in 3Gb operation ST3500414SS CURRENT /PO WER vs TH ROUGHP UT (SAS - 3.0GB) Random 8 Block Rea ds Page 7.5 Environmental limits 7.5.1 Temperature 7.5.2 Relative humidity 7.5.3 Effective altitude (sea level) 7.5.4 Shock and vibration 7.5.4.1 Shock 7.5.4.2 Vibration 7.5.5 Acoustics 7.5.6 Air cleanliness 7.5.7 Corrosive environment 7.5.8 Electromagnetic susceptibility 7.6 Mechanical specifications 8.0 About FIPS Purpose Level 2 security 9.0 About self-encrypting drives 9.1 Data encryption 9.2 Controlled access 9.2.1 Admin SP 9.2.2 Locking SP 9.3 Random number generator (RNG) 9.4 Drive locking 9.5 Data bands 9.6 Cryptographic erase 9.7 Authenticated firmware download 9.8 Power requirements 9.9 Supported commands 10.0 Defect and error management 10.1 Drive internal defects/errors 10.2 Drive error recovery procedures 10.3 SAS system errors LBA (cumulative, ms) Write retry count Maximum recovery time per LBA (cumulative, ms) 10.4 Background Media Scan 10.5 Media Pre-Scan 10.6 Deferred Auto-Reallocation Page 11.0 Installation 11.1 Drive orientation 11.2 Cooling 11.3 Drive mounting 11.4 Grounding 12.0 Interface requirements 12.1 SAS features 12.1.1 task management functions 12.1.2 task management responses Table 6: SAS task management functions supported 12.2 Dual port support 12.3 SCSI commands supported Page Page Page 12.3.1 Inquiry data Table 9: Constellation ES inquiry data 12.3.2 Mode Sense data Page Table 10: Mode Sense data changeable and default values for 2TB drives Table 11: Mode Sense data changeable and default values for 1TB drives Table 12: Mode Sense data changeable and default values for 500GB drives Constellation ES Series SAS Product Manual, Rev. F 63 12.4 Miscellaneous operating features and conditions Table 13: Miscellaneous features Table 14: Miscellaneous status Page Constellation ES Series SAS Product Manual, Rev. F 65 Figure 17. SAS device plug dimensions C OF DATUM B L B A BC CA Page 12.4.2 Physical characteristics 12.4.3 Connector requirements 12.4.4 Electrical description 12.4.5 Pin descriptions Table 15: SAS pin descriptions 12.5 Signal characteristics 12.5.1 Ready LED Out Table 16: Ready LED Out conditions 12.5.2 Differential signals 12.6 SAS-2 Specification Compliance 12.7 Additional information Table 17: LED drive signal Table 18: General interface characteristics Page Index Numerics A B C E F G H I L M N O P R S T U