Hitachi Part #/MPN: 08K2254
DiscTech Item #: HIT-08K2254-FR-OE
Interface Types: SCSI 68pin HD68 Female
Form Factor: 3.5inx1.0in LFF Hard Drive
Sector Size: 512 / 512e
Sustained Throughput: 33.8 - 66.7
Average Seek Time: 4.7ms
Electrical Interface: SCSI LVD U320 - 320MBps 16-bit
On-Board Cache: 8MB
Hitachi Ultrastar DK32EJ 08K2254 / DK32EJ-72NW 73GB 10K U320 68pin SCSI 3.5" Hard Drive - Factory Refurbished
- Rotational speed of 10,000 rpm and average seek times as low as 4.7 ms provide outstanding performance
- Capacities of 146, 73, 36, and 18GB from a single server drive family for unrivaled configuration flexibility and ease of integration
- First ever server-class drive to implement antiferromagnetically-coupled (AFC) media, combined with advanced head/disk design, resulting in high reliability for today�fs critical server-class environments
- Enhanced servo technology (Rotational Vibration Safeguard) nullifies the effect of rotational vibration in multi-drive cabinets, overcoming an industry hurdle to optimal server performance
Advanced drive technology
Introducing the sixth generation of Ultrastar 10,000 rpm disk drives. The Hitachi Ultrastar 146 Z10 drive family offers high quality and superior performance. These drives feature more powerful processors and read/write channels to excel in server-class environments.
To achieve maximum I/O performance, the drives combine fast seek times, large 8 MB multi-segmented buffers, a sophisticated command queuing algorithm, hardware automation, and superior data rates (825 Mbps). Ultrastar 146 Z10 drives include new servo technology (Rotational Vibration Safeguard "RVS"), employed to counteract the effects of rotational vibration that commonly occur in multi-drive cabinets. They also employ fifth-generation giant magnetoresistive (GMR) head technology to double areal density from previous generation drives (26.3 Gbits/sq. in.) and boost performance. In addition, highly efficient No-ID* sector formatting enables more data to be stored per disk.
The Ultrastar 146 Z10 family of server-class drives is the first of its class to incorporate our storage breakthrough technology antiferromagnetically-coupled (AFC) media. Informally known as �gpixie dust�h, this technology sandwiches a three-atom thick layer of ruthenium, a precious metal, between two magnetic layers on a disk. AFC technology provides greater stability of the recording media, enhancing reliability.
Drive Fitness Test enables drive self-testing and analysis for more robust system management. To help ensure data protection, Hitachi Ultrastar drives include exclusive reporting tools, such as Predictive Failure Analysis* (to signal potential drive problems) and Drive-TIP* (to monitor the drive temperature and avoid malfunctions).
In addition, load/unload technology and glass substrate disks increase reliability of Ultrastar drives by providing a more robust solution at high rotational speeds.
Hitachi Ultrastar drives provide extremely quiet operation. The tri-laminate drive cover reduces both idle and seek acoustics while an enhanced spindle motor driver enables smoother commutation for less noise. Moreover, the Ultrastar 146Z10 delivers an outstanding power efficient design.
Support for advanced applications and interfaces
Hitachi Ultrastar drives provide high data throughput for data-intensive applications with a choice of 2 Gbit Fibre Channel and Ultra320 SCSI (backward-compatible) interfaces. The Ultra320 SCSI adds greater speed, reduced overhead, improved diagnostic capabilities and data protection.
Model Number: DK32EJ
This drive is comaptible with any of our hotswap drive trays / caddies.
|Interface||Ultra320 / Ultra160 SCSI||FC-AL-2|
|Sector size (bytes)||512-528 (variable, 2 byte inc.)||512-528 (8 byte inc)|
|Data heads (physical)||12/6/3/2||12/6/3/2|
|Max. areal density (Mbits/sq. inch)||26,263||3126,263|
|Max. recording density (BPI)||548,000||548,000|
|Track density (TPI)||47,900||47,900|
|Data Buffer||8192 KB||8192 KB|
|Rotational speed (rpm)||10,000||10,000|
|Latency average (ms)||3.00||3.00|
|Data transfer rate (max. Mbits/sec)||433 - 825||433 - 825|
|Interface transfer rate (max. MB/sec)||320||200/400|
|Sustained data rate (MB/sec)||33.8 - 66.7||33.8 - 66.7|
|Seek time (read, typical)2|
|Track to track (ms)||0.5||0.5|
|Full track (ms)||7.2/8.0||7.2/8.0|
|Error rate (non-recoverable)||10 in 10E16 bits read||10 in 10E16 bits read|
|Start/stops (at 40° C)||50K||50K|
|Idle - Typical (Bels)||3.7/3.4/3.4/3.4||3.7/3.4/3.4/3.4|
|Operating - Typical (Bels)||4.5/4.5/4.5/4.5||4.5/4.5/4.5/4.5|
|Requirement||+5VDC (+-5%), +12 VDC (+-5%)||+5VDC (+-5%), +12 VDC (+-5%)|
|Startup current (max. peak)||1.07A (5V), 2.40A (12V)||1.12A (5V), 2.40A (12V)|
|Power consumption efficiency index||0.07 W/GB , 0.11 W/GB||0.08 W/GB , 0.12 W/GB|
|0.19 W/GB , 0.33 W/GB||0.22 W/GB , 0.38 W/GB|
|Height (mm)||25.4 (+-0.4)||25.425.4 (+-0.4)|
|Width (mm)||101.6 (+-0.4)||101.6 (+-0.4)|
|Depth (mm)||146 (+-0.6)||146 (+-0.6)|
|Weight (max. kg)||0.78||0.78|
|Ambient temperature||5° to 55° C|
|Relative humidity (non-condensing)||8% to 90%|
|Max. wet bulb (non-condensing)||29.4° C|
|Shock (half sine wave)||10G (11 ms) / 45G (2 ms)|
|Random Vibration (RMS)||0.67G for horizontal|
|0.56G for vertical|
|Ambient temperature||-40° to 65° C|
|Relative humidity (non-condensing)||5% to 95%|
|Max. wet bulb (non-condensing||35° C|
|Shock (half sine wave)||75G (11 ms) / 225G (2 ms) for 146GB / 300G (2 ms) for 73, 36, and 18GB|
|Random Vibration (RMS)||1.04G|
1 GB equals one billion bytes when referring to hard drive capacity; accessible capacity may be less.
2 Excludes command overhead.
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Alternate MPNs: DK32EJ-72NW 8K2254
Weight: 1.8 lb
Warranty: 1 Year DiscTech
The product has been built, rebuilt or repaired at the original manufacturer's factory (Note we NEVER sell 3rd party repaired items, as we do not find them to be reliable enough). Often these products are extremely close to new in condition, except that they contain at least one recycled or repaired component. Failure rates are often lower on these devices since they have been far more thoroughly tested than new items.
The product has a manufacturer warranty for the time period specified.