Seagate Part #/MPN: ST31000426SS
DiscTech Item #: SGT-ST31000426SS-BN-5Y
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Interface Types: SAS Serial Attached SCSI
Form Factor: 3.5inx1.0in LFF Hard Drive
Sector Size: 512 / 512e
Sustained Throughput: 60 to 150
Average Seek Time: 8.5/9.5
Electrical Interface: SAS-2 Serial Attached SCSI v2 - 6.0Gbps
Seagate ST31000426SS 1TB 3.5in 6Gbps 7.2K RPM HS SED FIPS Constellation ES SAS HDD - Brand New
Seagate ST31000426SS 1TB 3.5" 6.0 Gbps 7200 RPM Hot Swappable Self-Encrypting Drive Federal Information Processing Standards Constellation ES Serial Attached SCSI Hard Disk Drive - Brand New
Constellation ES drives provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers. The Serial Attached SCSI interface is designed to meet next-generation computing demands for performance, scalability, flexibility and high density storage requirements.
Constellation ES drives are random access storage devices designed to support the Serial Attached SCSI Protocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of this drive. Constellation ES drives are classified as intelligent peripherals and provide level 2 conformance (highest level) with the ANSI SCSI-1 standard.
The SAS connectors, cables and electrical interface are compatible with Serial ATA (SATA), giving future users the choice of populating their systems with either SAS or SATA hard disc drives. This allows you to continue to leverage your existing investment in SCSI while gaining a 6Gb/s serial data transfer rate.
The Self-Encrypting Drive models indicated on the cover of this product manual have provisions for “Security of Data at Rest” based on the standards defined by the Trusted Computing Group.
The head and disc assembly (HDA) is sealed at the factory. Air recirculates within the HDA through a nonreplaceable filter to maintain a contamination-free HDA environment.
Constellation ES drives use a dedicated load/unload zone at the outermost radius of the media to eliminate the possibility of destroying or degrading data by landing in the data zone. The heads automatically go to the ramp load/unload when power is removed from the drive.
An automatic shipping lock prevents potential damage to the heads and discs that results from movement during shipping and handling. The shipping lock disengages and the head load process begins when power is applied to the drive.
Constellation ES drives decode track 0 location data from the servo data embedded on each surface to eliminate mechanical transducer adjustments and related reliability concerns.
The drives also use a high-performance actuator assembly with a low-inertia, balanced, patented, straight arm design that provides excellent performance with minimal power dissipation.
Constellation ES drives have the following standard features:
- Perpendicular recording technology
- 1.5 / 3 / 6 Gb Serial Attached SCSI (SAS) interface
- Integrated dual port SAS controller supporting the SCSI protocol
- Support for SAS expanders and fan out adapters
- Firmware downloadable using the SAS interface
- 128 - deep task set (queue)
- Supports up to 32 initiators
- Jumper less configuration.
- User-selectable logical block size (512, 520, 524 or 528 bytes per logical block).
- Industry standard 3.5-inch dimensions
- Programmable logical block reallocation scheme
- Flawed logical block reallocation at format time
- Programmable auto write and read reallocation
- Reallocation of defects on command (Post Format)
- ECC maximum burst correction length of 400 bits
- No preventive maintenance or adjustments required
- Embedded servo design
- Dedicated head load/unload zone
- Self diagnostics performed when power is applied to the drive
- Vertical, horizontal, or top down mounting
- 16 Mbyte data buffer (see Section 5.5).
- Drive Self-Test (DST)
- • Background Media Scan (BMS)
- Idle Read After Write (IRAW)
- Power Save
Constellation® ES Series SAS Self-Encrypting Drive models have the following additional features:
- Automatic data encryption/decryption
- Controlled access
- Random number generator
- Drive locking
- 16 independent data bands
- Cryptographic erase of user data for a drive that will be repurposed or scrapped
- Authenticated firmware download
This drive is compatible with any server that accepts 3.5"x1.0" (LFF Hard Drive) SAS drives.
|Internal Drive Characteristics|
|Standard SED models||Yes|
|SED (FIPS 140-2) models||Yes|
|Read/write data heads||4|
|Bytes per track||1,012,608|
|Bytes per surface (MB)||250,000|
|Tracks per surface (total)||248,600|
|Tracks per inch (TPI)||237,000|
|Peak bits per inch (BPI)||1,515,000|
|Areal density (Gb/in)||347|
|Internal data rate (MB/s)||95 - 212|
|Disc rotation speed (RPM)||7200|
|Avg rotational latency (ms)||4.16|
|Seek Performance Characteristics|
|Average Access time Not including controller overhead (ms)||8.3 Read/ 9.3 Write|
|Average Access time Including controller overhead (ms)||8.5 Read/ 9.5 Write|
|Single Track Access time Not including controller overhead (ms)||0.5 Read/ 0.8 Write|
|Single Track Access time Including controller overhead (ms)||0.7 Read/ 1.0 Write|
|Full stroke Access time Not including controller overhead (ms)||18 Read/ 19 Write|
|Full stroke Access time Including controller overhead (ms)||18.2 Read/ 19.2 Write|
|Maximum Format command execution time for 512-byte sectors (minutes with verify)||345|
|Maximum Format command execution time for 512-byte sectors (minutes without verify)||173|
|General Performance Characteristics|
|Minimum sector interleave||1 to 1|
|Data buffer to/from disc media (one 512-byte logical block)||95 to 212 MB/s|
|Sustained transfer rate||60 to 150 MB/s|
|SAS Interface maximum instantaneous transfer rate||600MB/s per port|
|Logical block sizes||512 (default), 520, 524, or 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||4.16 ms|
|Seek Error rate||Less than 10 errors in 10E8 seeks|
|Read Error Rates Recovered Data||Less than 10 errors in 10E12 bits transferred (OEM default settings)|
|Read Error Rates Unrecovered Data||Less than 1 sector in 10E15 bits transferred|
|Read Errors Rates Miscorrected Data||Less than 1 sector in 10E21 bits transferred|
|Interface error rate||Less than 1 error in 10E12 bits transferred|
|Mean Time Between Failure (MTBF)||1,200,000 hours|
|Annualized Failure Rate (AFR)||0.73%|
|Preventive maintenance||None required|
|S.M.A.R.T. On-line only delay times||233 ms|
|S.M.A.R.T. Fully-enabled delay times||560 ms|
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Weight: 1.8 lb
Warranty: 5 Year Manufacturer
The product is brand new.
5 Year Manufacturer Warranty
The product has a manufacturer warranty for the time period specified.