Seagate 15K.5 - Cheetah - Hard Drive User manual

300, 146 and 73 GB •15K RPM •Ultra320 SCSI,
3-Gb/s Serial Attached SCSI (SAS) and 4-Gb/s FC
Key Advantages
• Perpendicularrecordingisfundamentallysuperior,enabling300-GB
capacitywith30percenthighersustaineddatarate.
• TheSeagate®Cheetah®15K.5driveistherstdrivetobreakthe
100-MBsustainedtransferratebarrier,deliveringupto125MB/s.
• FastestandmostreliableCheetah15Kdriveever
• 30percentmoreIOPSandmorethan20percentfasterresponsetimes
than3.5-inch10Kdrives
• Enableshigherperformancewithfewerdrives,reducingsupporting
infrastructure,maintenanceandspaceneeds,whileincreasingsystem
reliability
• Highestreliabilityofany3.5-inchdriveintheindustry,designedfor
demanding24x7enterpriseapplications
• ReducesRAIDrebuildtimeswhileminimizingreliabilityrisks
• Nonrecoverableerrorratehasbeenimprovedbyafactorof10.
Best-Fit Applications
Allmainstreamenterpriseapplications,suchas:
• Email
• Businessprocessing
• Transactionprocessing
• Decisionsupport
• Storageareanetworks(SAN)
• Networkedattachedstorage(NAS)
• Internetande-commerce
Cheetah®15K.5
Mainstream enterprise hard drive storage
DataSheet

Cheetah®15K.5
Mainstream enterprise hard drive storage
AMERICAS Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066, United States, 831-438-6550
ASIA/PACIFIC Seagate Technology International Ltd. 7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888
EUROPE, MIDDLE EAST AND AFRICA Seagate Technology SAS 130–136, rue de Silly, 92773, Boulogne-Billancourt Cedex, France 33 1-4186 10 00
Copyright©2007SeagateTechnologyLLC.Allrightsreserved.PrintedinUSA.Seagate,SeagateTechnologyandtheWavelogoareregisteredtrademarksofSeagateTechnologyLLCintheUnitedStatesand/orothercountries.
CheetahiseitheratrademarkorregisteredtrademarkofSeagateTechnologyLLCoroneofitsafliatedcompaniesintheUnitedStatesand/orothercountries.Allothertrademarksorregisteredtrademarksarethepropertyoftheir
respectiveowners.Onegigabyte,orGB,equalsonebillionbyteswhenreferringtoharddrivecapacity.Accessiblecapacitymayvarydependingonoperatingenvironmentandformatting.Seagatereservestherighttochange,without
notice,productofferingsorspecications.PublicationNumber:DS1594.4-0712US,December2007
Lowest Cost of Ownership
• Fifth-generationCheetah15Kdriveisthefastest,highest
capacityandmostreliableever.
• Cheetah15K.5driveperformanceandreliabilityenable
lowerTCOforenterpriseapplications.
• 15KRPMandfastseektimesdeliverthefastesttime-
to-data,resultingin30percentmoreIOPSandover20
percentfasterresponsetimesthan3.5-inch10Kdrives.
• Higherperformancewithfewerdrives—reducingsupport
infrastructure,physicalspacerequirementsandstorage
managementcosts
• Thehighestreliabilityofany3.5-inchdrive,andincreased
systemreliabilityduetotheneedforfewerdrives
Highest Reliability
• Seagatecontinuestofocusonreliabilityanddata
protection.Newfeaturesinthisgenerationhaveimproved
thenonrecoverableerrorratebyafactorof10.
• Seagate-exclusiveIRAW(IdleReadAfterWrite)enhances
dataprotectionbyverifying—duringdriveidletime—that
datainthedrivebufferwasproperlywritten.
• Seagate-exclusiveenhancedErrorCorrectionCode
bettermaintainsperformancethroughoutthelifeofthe
driveandreducestheprobabilityoflostdata.
• ThesecondgenerationofSeagate-exclusiveBackground
MediaScan(BMS)proactivelyscansthemediafor
potentialdefectsduringdriveidletime.Itenables
incipienterrorstobecorrectedbeforedataislost.
• TheCheetah15K.5driveisdesignedandmanufactured
bythesameteamsthatsuccessfullydeliveredthepast
fouraward-winninggenerations.
Seagate Service Centers—Worldwide Support
• Presalesandtechnicalsupportat1-800-SEAGATE
• Expertemailsupportandcompletehistoricalweb
contentavailableonline
• Experiencedsupportstaff
• SeagateDesignServiceCenters(DSC)helpcompanies
transforminnovativeideasintoviableproducts.
Specifications 300 GB1146.8 GB173.4 GB1
Model Number ST3300655LW/LC/FC/SS ST3146855LW/LC/FC/SS ST373455LW/LC/FC/SS
Capacity
Formatted 512 Kbytes/Sector (GB) 300 146.8 73.4
External Transfer Rate (MB/s)
Ultra320 SCSI
4-Gb/s Fibre Channel
3-Gb/s Serial Attached SCSI
320
400
300
320
400
300
320
400
300
Performance
Spindle Speed (RPM) 15K 15K 15K
Average Latency (ms) 2.0 2.0 2.0
Seek Time
Average Read/Write (ms)
Track-to-Track Read/Write (ms)
3.5/4.0
0.2/0.4
3.5/4.0
0.2/0.4
3.5/4.0
0.2/0.4
Transfer Rate
Internal (Mb/s)
Internal Formatted (MB/s)
Sustained (MB/s)
960 to 1607
89 to 150
73 to 125
960 to 1607
89 to 150
73 to 125
960 to 1607
89 to 150
73 to 125
Cache, Multisegmented (MB/s) 16 16 16
Configuration/Organization
Discs 4 2 1
Heads 8 4 2
Nonrecoverable Read Errors per Bits Read 1 sector per 10E16 1 sector per 10E16 1 sector per 10E16
Annualized Failure Rate (AFR) 0.62% 0.62% 0.62%
Power Management
Typical (W)
SCSI
Fibre Channel
SAS
17. 6
18.8
17. 4
14.2
16.5
14.9
13.6
14.7
13.7
Power Idle (W)
SCSI
Fibre Channel
SAS
12.5
13.7
13.2
9.6
10.7
11.2
8.1
9.2
8.4
Environmental
Temperature, Operating (°C) 5 to 55 5 to 55 5 to 55
Temperature, Nonoperating (°C) –40 to 70 –40 to 70 –40 to 70
Shock, Operating: 2 ms (Gs) 60 60 60
Shock, Nonoperating: 2 ms (Gs) 250 250 250
Acoustics Idle (bels—sound power) 3.6 3.6 3.6
Vibration, Operating: <400 Hz (Gs) 1.0 1.0 1.0
Vibration, Nonoperating: <400 Hz (Gs) 2.0 2.0 2.0
Physical
Height (in/mm) 1.0 /25.4 1.0 /25.4 1.0 /25.4
Width (in/mm) 4.0/101.6 4.0/101.6 4.0/101.6
Depth (in/mm) 5.75/146.05 5.75 /146.05 5.75/146.05
Weight (lb/kg) 1.5 /0.771 1.5 /0.771 1.5/ 0.771
Warranty
Limited Warranty (years) 5 5 5
1One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity.
www.seagate.com
1-800-SEAGATE (1-800-732-4283)