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5.2.2 Format command execution time (minutes) When changing sector sizes, the format times shown below may need to be increased by 30 minutes. Maximum (with verify) Maximum (without verify) 600GB 119 60 450GB 90 45 300GB 58 29 Note. There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity. 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). 5.2.3 General performance characteristics Sustainable disk transfer rate*: Minimum Maximum 122 Mbytes/sec (typical) 204 Mbytes/sec (typical) SAS Interface maximum instantaneous transfer rate 600 Mbytes/sec* per port Logical block sizes Default is 512-byte data blocks Sector sizes variable to 512, 520, and 528 kbytes. 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 system ability to support the rates listed and no cable loss. 1 MB/sec = 1,000,000 bytes/sec 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 20 seconds (excluding the error recovery procedure). 10 Cheetah 15K.7 SAS Product Manual, Rev. C

Section	Page
1.0 Seagate Technology support services	7
2.0 Scope	8
3.0 Standards, compliance and reference documents	9
3.1 Standards	9
3.1.1 Electromagnetic compatibility	9
3.1.1.1 Electromagnetic susceptibility	9
3.2 Compliance	10
3.2.1 Electromagnetic compliance	10
3.3 European Union Restriction of Hazardous Substances (RoHS)	10
3.4 Reference documents	11
4.0 General description	12
4.1 Standard features	13
4.2 Media description	13
4.3 Performance	13
4.4 Reliability	14
4.5 Formatted capacities	14
4.6 Programmable drive capacity	14
4.7 Factory-installed options	14
5.0 Performance characteristics	15
5.1 Internal drive characteristics	15
5.2 Seek time	15
5.2.1 Access time	15
5.2.2 Format command execution time (minutes)	16
5.2.3 General performance characteristics	16
5.3 Start/stop time	16
5.4 Prefetch/multi-segmented cache control	17
5.5 Cache operation	17
5.5.1 Caching write data	18
5.5.2 Prefetch operation	18
6.0 Reliability specifications	19
6.1 Error rates	19
6.1.1 Recoverable Errors	19
6.1.2 Unrecoverable Errors	19
6.1.3 Seek errors	20
6.1.4 Interface errors	20
6.2 Reliability and service	20
6.2.1 Annualized Failrue Rate (AFR) and Mean time between failure (MTBF)	20
6.2.2 Preventive maintenance	20
6.2.3 Hot plugging the drive	20
6.2.4 S.M.A.R.T.	21
6.2.5 Thermal monitor	22
6.2.6 Drive Self Test (DST)	23
6.2.6.1 DST failure definition	23
6.2.6.2 Implementation	23
6.2.7 Product warranty	25
7.0 Physical/electrical specifications	26
7.1 AC power requirements	26
7.2 DC power requirements	26
7.2.1 Conducted noise immunity	30
7.2.2 Power sequencing	30
7.2.3 Current profiles	30
7.3 Power dissipation	33
7.4 Environmental limits	35
7.4.1 Temperature	35
7.4.2 Relative humidity	36
7.4.3 Effective altitude (sea level)	36
7.4.4 Shock and vibration	36
7.4.4.1 Shock	36
7.4.4.2 Vibration	38
7.4.5 Acoustics	39
7.4.6 Air cleanliness	39
7.4.7 Corrosive environment	39
7.4.8 RoHS compliance statement	39
7.4.9 Electromagnetic susceptibility	40
7.5 Mechanical specifications	40
8.0 About FIPS	41
9.0 About self-encrypting drives	42
9.1 Data encryption	42
9.2 Controlled access	42
9.2.1 Admin SP	42
9.2.2 Locking SP	42
9.2.3 Default password	43
9.3 Random number generator (RNG)	43
9.4 Drive locking	43
9.5 Data bands	43
9.6 Cryptographic erase	43
9.7 Authenticated firmware download	43
9.8 Power requirements	44
9.9 Supported commands	44
10.0 Defect and error management	45
10.1 Drive internal defects/errors	45
10.2 Drive error recovery procedures	45
10.3 SAS system errors	47
10.4 Background Media Scan	47
10.5 Media Pre-Scan	48
10.6 Deferred Auto-Reallocation	48
10.7 Idle Read After Write	48
11.0 Installation	49
11.1 Drive orientation	49
11.2 Cooling	49
11.3 Drive mounting	50
11.4 Grounding	50
12.0 Interface requirements	51
12.1 SAS features	51
12.1.1 task management functions	51
12.1.2 task management responses	51
12.2 Dual port support	52
12.3 SCSI commands supported	52
12.3.1 Inquiry data	56
12.3.2 Mode Sense data	57
12.3.2.1 600GBmodel Mode Sense data	58
12.3.2.2 450GB model Mode Sense data	60
12.3.2.3 300GB model Mode Sense data	62
12.4 Miscellaneous operating features and conditions	63
12.4.1 SAS physical interface	64
12.4.2 Physical characteristics	66
12.4.3 Connector requirements	66
12.4.4 Electrical description	67
12.4.5 Pin descriptions	67
12.4.6 SAS transmitters and receivers	68
12.4.7 Power	68
12.5 Signal characteristics	68
12.5.1 Ready LED Out	68
12.5.2 Differential signals	69
12.6 SAS-2 Specification compliance	69
12.7 Additional information	69
Numerics	71
A	71
B	71
C	71
D	71
E	72
F	72
G	72
H	72
I	72
J	72
L	72
M	72
N	73
O	73
P	73
Q	73
R	73
S	73
T	74
U	74
V	74
W	74

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Cheetah 15K.7 SAS Product Manual, Rev. C

5.2.2

Format command execution time (minutes)

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

Note.

There is approximately a 1.5 increase in time to format a SED drive versus a non-SED drive of the same capacity.

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).

5.2.3

General performance characteristics

Sustainable disk transfer rate*:

Minimum

122 Mbytes/sec (typical)

Maximum

204 Mbytes/sec (typical)

SAS Interface maximum instantaneous transfer rate

600 Mbytes/sec* per port

Logical block sizes

Default is 512-byte data blocks

Sector sizes variable to 512, 520, and 528 kbytes.

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 system ability to support the rates listed and no cable loss.

1 MB/sec = 1,000,000 bytes/sec

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 20 seconds (excluding the error recovery procedure).

600GB

450GB

300GB

Maximum (with verify)

119

Maximum (without verify)