Seagate ST300MP0014 Savvio 15K.2 SAS Product Manual - Page 19

Savvio 15K.2 SAS Product Manual, Rev. G

11

5.2.2

Format command execution time

ST9146852SS

ST9146752SS

ST9146652SS

ST973452SS

ST973352SS

ST973252SS

Maximum (with verify)

64 minutes

47 minutes

Maximum (without verify)

48 minutes

39 minutes

Execution time measured from receipt of the last byte of the Command Descriptor Block (CDB) to the request

for a Status Byte Transfer to the Initiator (excluding connect/disconnect).

When changing sector sizes, the format times shown above may need to be increased by 30 minutes.

5.2.3

General performance characteristics

Sustained transfer rate

105 to 152 Mbytes/sec

SAS Interface maximum instantaneous transfer rate

600 Mbytes/sec* per port

(dual port = 1,200 Mbytes/sec*)

Logical block sizes

512 (default), 520, 524 and 528

Read/write consecutive sectors on a track

Yes

Flaw reallocation performance impact (for flaws reallocated at format time using the

spare sectors per sparing zone reallocation scheme.)

Negligible

Average rotational latency

2.0 msec

*Assumes no errors and no relocated logical blocks. Rate measured from the start of the first logical block transfer to or

from the host.

5.3

Start/stop time

The drive accepts the commands listed in the SAS Interface Manual less than 3 seconds after DC power has

been applied.

If the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START

STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20

seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit equal to 0 before receiving a NOTIFY

(ENABLE SPINUP) primitive, the drive waits for a START STOP UNIT command with the START bit equal to 1.

After receiving a START STOP UNIT command with the START bit equal to 1, the drive waits for a NOTIFY

(ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the

drive becomes ready for normal operations within 30 seconds (excluding the error recovery procedure).

If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does

not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT

command.

The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 20 sec-

onds (maximum) from removal of DC power. SCSI stop time is 20 seconds. There is no power control switch

on the drive.

Section	Page
1.0 Seagate Technology support services	9
2.0 Scope	10
3.0 Applicable standards and reference documentation	11
3.1 Standards	11
3.1.1 Electromagnetic compatibility	11
3.1.2 Electromagnetic compliance	12
3.1.3 European Union Restriction of Hazardous Substances (RoHS)	13
3.2 Reference documents	13
4.0 General description	14
4.1 Standard features	15
4.2 Media description	15
4.3 Performance	16
4.4 Reliability	16
4.5 Formatted capacities	16
4.6 Programmable drive capacity	17
4.7 Options	17
5.0 Performance characteristics	18
5.1 Internal drive characteristics	18
5.2 Seek performance characteristics	18
5.2.1 Access time	18
5.2.2 Format command execution time	19
5.2.3 General performance characteristics	19
5.3 Start/stop time	19
5.4 Prefetch/multi-segmented cache control	20
5.5 Cache operation	20
5.5.1 Caching write data	21
5.5.2 Prefetch operation	21
6.0 Reliability specifications	22
6.1 Error rates	22
6.1.1 Recoverable Errors	22
6.1.2 Unrecoverable Errors	22
6.1.3 Seek errors	23
6.1.4 Interface errors	23
6.2 Reliability and service	23
6.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)	23
6.2.2 Preventive maintenance	23
6.2.3 Hot plugging the drive	23
6.2.4 S.M.A.R.T.	24
6.2.5 Thermal monitor	25
6.2.6 Drive Self Test (DST)	26
6.2.7 Product warranty	28
7.0 Physical/electrical specifications	29
7.1 AC power requirements	29
7.2 DC power requirements	29
7.2.1 Conducted noise immunity	32
7.2.2 Power sequencing	32
7.2.3 Current profiles	33
7.3 Power dissipation	35
7.4 Environmental limits	37
7.4.1 Temperature	37
7.4.2 Relative humidity	37
7.4.3 Effective altitude (sea level)	38
7.4.4 Shock and vibration	38
7.4.5 Air cleanliness	40
7.4.6 Corrosive environment	40
7.4.7 Acoustics	41
7.4.8 Electromagnetic susceptibility	41
7.5 Mechanical specifications	42
8.0 About FIPS	43
9.0 About self-encrypting drives	45
9.1 Data encryption	45
9.2 Controlled access	45
9.2.1 Admin SP	45
9.2.2 Locking SP	45
9.2.3 Default password	46
9.3 Random number generator (RNG)	46
9.4 Drive locking	46
9.5 Data bands	46
9.6 Cryptographic erase	46
9.7 Authenticated firmware download	47
9.8 Power requirements	47
9.9 Supported commands	47
10.0 Defect and error management	48
10.1 Drive internal defects/errors	48
10.2 Drive error recovery procedures	48
10.3 SAS system errors	49
10.4 Background Media Scan	50
10.5 Media Pre-Scan	50
10.6 Deferred Auto-Reallocation	50
10.7 Idle Read After Write	51
11.0 Installation	52
11.1 Drive orientation	52
11.2 Cooling	53
11.3 Drive mounting	54
11.4 Grounding	54
12.0 Interface requirements	55
12.1 SAS features	55
12.1.1 Task management functions	55
12.1.2 Task management responses	55
12.2 Dual port support	56
12.3 SCSI commands supported	57
12.3.1 Inquiry data	61
12.3.2 Mode Sense data	61
12.4 Miscellaneous operating features and conditions	65
12.4.1 SAS physical interface	66
12.4.2 Physical characteristics	69
12.4.3 Connector requirements	69
12.4.4 Electrical description	69
12.4.5 Pin descriptions	69
12.4.6 SAS transmitters and receivers	70
12.4.7 Power	71
12.5 Signal characteristics	71
12.5.1 Ready LED Out	71
12.5.2 Differential signals	71
12.6 SAS-2 Specification compliance	72
12.7 Additional information	72
Numerics	73
A	73
B	73
C	73
D	73
E	74
F	74
G	74
H	74
I	74
J	74
K	74
L	74
M	74
N	75
O	75
P	75
Q	75
R	75
S	76
T	76
U	76
V	76
W	76

Seagate ST300MP0014 Savvio 15K.2 SAS Product Manual - Page 19

Start/stop time

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