Tech overviewSeagate Exos 7E8 ST4000NM003A - Hard drive - 4 TB - internal - 3.5\" - SAS 12Gb/s - 7200 rpm - buffer: 256 MBSupporting the industry\'s best response times for an 8TB nearline drive, Seagate\'s Seagate Exos 3.5 HDD enables the fastest data transfers thanks to our comprehensive advanced caching technology. When building maximum density server and storage solutions with Seagate\'s Seagate Exos 3.5 HDD, you can rest easy knowing that your storage infrastructure can scale to meet your growing capacity needs while offering your users a consistent and predictable response rate.SpecificationsGeneralDevice TypeHard drive - internalCapacity4 TBForm Factor3.5\"InterfaceSAS 12Gb/sBuffer Size256 MBBytes per Sector512FeaturesPowerChoice, Seagate RAID Rebuild, Dual Port, Humidity Sensor, Low Halogen, Super Parity, T10 Data Integrity Field (DIF), 24x7 availability, advanced format 512n, Advanced Write Caching, Conventional magnetic recording (CMR)Width4 inDepth5.8 inHeight1 inWeight22.89 ozPerformanceDrive Transfer Rate1.2 GBps (external)Internal Data Rate215 MBpsAverage Latency4.16 msSpindle Speed7200 rpmReliabilityMTBF2,000,000 hours24x7 OperationYesNon-Recoverable Errors1 per 10^15Expansion & ConnectivityInterfaces2 x SAS 12 Gb/sCompatible Bay3.5\"PowerPower Consumption5.94 Watt (idle) ¦ 11.33 Watt (active)Environmental ParametersMin Operating Temperature41 °FMax Operating Temperature140 °FShock Tolerance (operating)70 gShock Tolerance (non-operating)300 g @ 2 msVibration Tolerance (non-operating)5 g @ 10-500 Hz