Home » Seagate Manuals » Hard Drives » Seagate ST300MP0004 » Manual Viewer

Seagate ST300MP0004 Savvio 15K.1 FC User Guide - Page 19

Performance characteristics

View all Seagate ST300MP0004 manuals

Add to My Manuals
Save this manual to your list of manuals

Page 19 highlights

4.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Savvio drives. 4.1 Internal drive characteristics ST973451FC Drive capacity 73.4 Read/write data heads 4 Tracks per surface (total) 42,554 Tracks per inch 150 Peak bits per inch 861.81 Areal Density 130.58 Internal data rate 957.51 to 1,282.08 Sustained data transer rate 57-89 Disc rotation speed 15k Avg rotational latency 2.0 ST936751FC 36.2 2 42,554 150 861.81 130.58 957.51 to 1,282.08 57-89 15k 2.0 Gbytes (formatted, rounded off value) Tracks (user accessible) kTPI (average) kBPI Gbit/in2 Mbits/sec (variable with zone) Mbytes/sec (variable with zone) revolutions/min (RPM) msec 4.2 Seek performance characteristics See Section 9.5, "FC-AL physical interface" on page 57 and the Fibre Channel Interface Manual (part number 100293070) for additional timing details. 4.2.1 Access time Average Typical3,4 Not Including controller overhead1, 2 (msec) Read Write 2.6 3.1 Single track Typical3,4 0.2 0.4 Full stroke Typical3,4 4.9 5.5 1. Execution time measured from receipt of the FCP Command to the FCP Response. 2. Assumes no errors and no sector has been relocated. 3. Typical access times are measured under nominal conditions of temperature, volt- age, and horizontal orientation as measured on a representative sample of drives. 4. Access to data = access time + latency time. Savvio 15K.1 FC Product Manual, Rev. B 11

Section	Page
1.0 Scope	9
2.0 Applicable standards and reference documentation	11
2.1 Standards	11
2.1.1 Electromagnetic compatibility	11
2.1.1.1 Electromagnetic susceptibility	11
2.1.2 Electromagnetic compliance	12
2.2 European Union Restriction of Hazardous Substances (RoHS)	12
2.3 Reference documents	13
3.0 General description	15
3.1 Standard features	16
3.2 Media description	17
3.3 Performance	17
3.4 Reliability	17
3.5 Formatted capacities	17
3.5.1 Programmable drive capacity	18
3.6 Factory-installed accessories	18
3.7 Options	18
4.0 Performance characteristics	19
4.1 Internal drive characteristics	19
4.2 Seek performance characteristics	19
4.2.1 Access time	19
4.2.2 Format command execution time	20
4.2.3 General performance characteristics	20
4.3 Start/stop time	20
4.4 Prefetch/multi-segmented cache control	21
4.5 Cache operation	21
4.5.1 Caching write data	21
4.5.2 Prefetch operation	22
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Recoverable Errors	23
5.1.2 Unrecoverable Errors	24
5.1.3 Seek errors	24
5.1.4 Interface errors	24
5.2 Reliability and service	24
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)	24
5.2.2 Preventive maintenance	24
5.2.3 Hot plugging the drive	25
5.2.4 S.M.A.R.T.	25
5.2.5 Thermal monitor	26
5.2.6 Drive Self Test (DST)	27
5.2.6.1 DST failure definition	27
5.2.6.2 Implementation	28
5.2.6.2.1 State of the drive prior to testing	28
5.2.6.2.2 Invoking DST	28
5.2.6.2.3 Short and extended tests	28
5.2.6.2.4 Log page entries	29
5.2.6.2.5 Abort	29
5.2.7 Product warranty	29
6.0 Physical/electrical specifications	31
6.1 AC power requirements	31
6.2 DC power requirements	31
6.2.1 Conducted noise immunity	33
6.2.2 Power sequencing	33
6.2.3 Current profiles	33
6.3 Power dissipation	35
6.4 Environmental limits	38
6.4.1 Temperature	38
6.4.2 Relative humidity	39
6.4.3 Effective altitude (sea level)	39
6.4.4 Shock and vibration	39
6.4.4.1 Shock	39
6.4.4.2 Vibration	42
6.4.5 Air cleanliness	42
6.4.6 Corrosive environment	42
6.4.7 Acoustics	43
6.4.8 Electromagnetic susceptibility	43
6.5 Mechanical specifications	44
7.0 Defect and error management	45
7.1 Drive internal defects/errors	45
7.2 Drive error recovery procedures	45
7.3 FC-AL system errors	46
7.4 Background Media Scan	47
7.5 Media Pre-Scan	47
7.6 Deferred Auto-Reallocation	47
7.7 Idle Read After Write	48
8.0 Installation	49
8.1 Drive orientation	49
8.2 Cooling	49
8.3 Drive mounting	50
8.4 Grounding	50
9.0 Interface requirements	51
9.1 FC-AL features	51
9.1.1 Fibre Channel link service frames	51
9.1.2 Fibre Channel task management functions	52
9.1.3 Fibre Channel task management responses	52
9.1.4 Fibre Channel port login	53
9.1.5 Fibre Channel port login accept	54
9.1.6 Fibre Channel Process Login	54
9.1.7 Fibre Channel Process Login Accept	55
9.1.8 Fibre Channel fabric login	55
9.1.9 Fibre Channel fabric accept login	56
9.1.10 Fibre Channel Arbitrated Loop options	57
9.2 Dual port support	57
9.3 SCSI commands supported	58
9.3.1 Inquiry data	63
9.4 Miscellaneous operating features and conditions	64
9.5 FC-AL physical interface	65
9.5.1 Physical characteristics	65
9.5.1.1 Physical description	65
9.5.2 Connector requirements	66
9.5.3 Electrical description	66
9.5.4 Pin descriptions	67
9.5.5 FC-AL transmitters and receivers	68
9.5.6 Power	68
9.5.7 Fault LED Out	68
9.5.8 Active LED Out	69
9.5.9 Enable port bypass signals	69
9.5.10 Motor start controls	69
9.5.11 SEL_6 through SEL_0 ID lines	70
9.5.11.1 Parallel Enclosure Services Interface (ESI)	70
9.5.12 Device control codes	72
9.6 Signal characteristics	72
9.6.1 TTL input characteristics	72
9.6.2 Differential PECL output	73
9.6.3 Differential PECL input	73