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6.0Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
6.1AC power requirements
None.
6.2DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.
Table 2: ST3400755SS DC power requirements
| | | | | | | ST3400755SS | | ST3400755SS | |
| | | | | | | 1.5 Gbit mode | | 3 Gbit mode | |
| | | | | | | | | | |
| | | | | | Notes | (Amps) | (Amps) | (Amps) | (Amps) |
| | | | | | |
Voltage | | | +5V | +12V [2] | +5V | +12V [2] |
| | | | | | |
Regulation | | [5] | ±5% | ±5% [2] | ±5% | ±5% [2] |
| | | | | | | | |
| | | | | | [1] [6] | 0.76 | 0.37 | 0.75 | 0.37 |
Avg idle current DCX | | |
Maximum starting current | | | | | | |
| | | | | |
(peak DC) DC | 3σ | [3] | 0.89 | 1.73 | 0.88 | 1.73 |
(peak AC) AC | 3σ | [3] | 1.10 | 3.43 | 1.14 | 3.40 |
| 3σ | | | | | |
Delayed motor start (max) DC | [1] [4] | 0.63 | 0.04 | 0.67 | 0.04 |
Peak operating current: | | | | | | |
| | | | | |
| | | | [1] | 0.75 | 0.69 | 0.78 | 0.68 |
Typical DCX | | |
Maximum DC | 3σ | [1] | 0.78 | 0.74 | 0.81 | 0.74 |
Maximum (peak) DC | 3σ | | 1.38 | 2.64 | 1.40 | 2.58 |
| | | | | | | | | | |
[1]Measured with average reading DC ammeter or equivalent sampling scope. Instantaneous +12V current peaks will exceed these values. Power supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.
[2]For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 10,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.
[3]See +12V current profile in Figure 19.
[4]This condition occurs after OOB and Speed Negotiation completes but before the drive has received the Notify Spinup primitive.
Cheetah NS SAS Product Manual, Rev. B | 23 |
ST3400755SS
Cheetah NS SAS
Page
Contents
Installation
Defect and error management
Seagate Technology support services
Interface requirements
Typical ST3400755SS drive +5V and +12V current profiles
List of Figures
Cheetah NS SAS Product Manual, Rev. B
Scope
Cheetah NS SAS Product Manual, Rev. B
Standards
Standards, compliance and reference documents
Electromagnetic compatibility
Electromagnetic susceptibility
Compliance
Reference documents
Cheetah NS SAS Product Manual, Rev. B
General description
Media description
Standard features
Performance
Reliability
Formatted capacities
Factory-installed options
Programmable drive capacity
ST3400755SS
Cheetah NS SAS Product Manual, Rev. B
Internal drive characteristics
Performance characteristics
Access time
Seek performance
Start/stop time
Format command execution time minutes
General performance characteristics
Caching write data
Prefetch/multi-segmented cache control
Cache operation
Prefetch operation
Error rates
Reliability specifications
Recoverable Errors
Unrecoverable Errors
Seek errors
Reliability and service
Interface errors
Preventive maintenance
Controlling S.M.A.R.T
4 S.M.A.R.T
Performance impact
Reporting control
Thermal monitor
Temperature Log Page 0Dh
Predictive failures
DST failure definition
State of the drive prior to testing
Implementation
Invoking DST
Short test Function Code 001b
Product warranty
Extended test Function Code 010b
Log page entries
Product repair and return information
Shipping
Cheetah NS SAS Product Manual, Rev. B
AC power requirements
Physical/electrical specifications
DC power requirements
ST3400755SS DC power requirements
Power sequencing
General DC power requirement notes
Conducted noise immunity
Current profiles
Typical ST3400755SS drive +5V and +12V current profiles
Power dissipation
Environmental limits
Temperature
Effective altitude sea level
Relative humidity
Shock and vibration
Shock
Recommended mounting
Package size Packaged/product weight Drop height
Vibration
Air cleanliness
Acoustics
Corrosive environment
China Restriction of Hazardous Substances RoHS Directive
X表示该部件(于同类物品程度上)所含的危险和有毒物质中国RoHS MCV标准所定义的门槛值。
Physical dimensions
Mechanical specifications
Cheetah NS SAS Product Manual, Rev. B
Drive error recovery procedures
Defect and error management
Drive internal defects/errors
77.87
Media Pre-Scan
SAS system errors
Background Media Scan
Idle Read After Write
Deferred Auto-Reallocation
Drive orientation
Installation
Air flow
Cooling
Grounding
Drive mounting
Cheetah NS SAS Product Manual, Rev. B
Interface requirements
SAS features
Dual port support
Command name Command code Supported
Scsi commands supported
Commands supported by Cheetah NS SAS family drives
Commands supported by Cheetah NS SAS family drives
Commands supported by Cheetah NS SAS family drives
Commands supported by Cheetah NS SAS family drives
Cheetah NS SAS inquiry data Bytes Data hex
Mode Sense data
Inquiry data
Page
Mode Pages
2.1 ST3400755SS Mode Sense data
Miscellaneous features
Miscellaneous operating features and conditions
Supported Feature or condition
Miscellaneous status
SAS physical interface
Datum B
Connector requirements
Physical characteristics
Electrical description
Pin Signal name Signal type
Pin descriptions
SAS pin descriptions
Power
Signal characteristics
SAS transmitters and receivers
Ready LED Out
Differential signals
LED drive signal
General interface characteristics
Eye masks Eye masks overview
Jitter tolerance masks
Receive eye mask
Absolute amplitude
Normalized time in UI
Sinusoidal
Peak-to
Jitter
Frequency in kHz
Signal characteristica Units Gbps
Transmitter signal characteristics
Signal characteristic Units Gbps
Receiver signal characteristics
Maximum allowable jitter
Gbps m, n Deterministic jitterq
Receiver jitter tolerance
Impedance specifications
Compliant jitter test pattern Cjtpat
Impedance requirements Sheet 1
Electrical TxRx connections
Transmitter characteristics
Impedance requirements Sheet 2
= -5,437dB
Shows the zero-length test load
Receiver characteristics
Cheetah NS SAS Product Manual, Rev. B
Internet
Seagate Technology support services
Presales Support
Technical Support
Data Recovery Services Call Center Toll-free Direct dial
Warranty Service
Data Recovery Services Authorized Service Centers
Numerics
Index
Page
SAS
See also cooling