Highlights
> 300GB or 450GB capacity
> Large 16MB cache size minimizes command overhead
> Serial Attached SCSI or Fibre Channel interfaces for configuration flexibility
>
Proven perpendicular magnetic recording technology
>
Mature design ensures greater reliability and faster qualification time
Applications/Environments
> Online transaction processing
> RAID
> Storage Area Network (SAN)
> Network Attached Storage (NAS)
> Scientific engineering and data analysis
Ultimate performance meets high capacity
Hitachi’s next-generation 3.5-inch 15,000 RPM enterprise class hard drive
delivers the performance
and reliability required in mission-critical non-stop computing environments.
Built upon the mature system architecture and electronics of the prior
generation, the Ultrastar™ 15K450 provides a spacious capacity up to 450GB , 16MB cache
and a choice of Serial Attached SCSI (SAS) 3Gb/s or Fibre Channel Arbitrated
Loop (FCAL) 4Gb/s interfaces. These features make the Ultrastar 15K450 the ideal
solution for demanding enterprise computing environments like online transaction
processing, intensive data analysis and multi-user applications. The mature
design of Ultrastar 15K450 helps ensure shorter qualification time.
Highest reliability for demanding environments
Important reliability features come standard in the Ultrastar 15K450.
Rotational Vibration
Safeguard (RVS) technology ensures drive performance in multi-drive systems
where rotational vibration is likely to occur. Hitachi-patented Thermal
Fly-height Control (TFC) technology maintains a consistent fly-height during the
read/write process ensuring a better soft error rate, while end-to-end data
protection enhances error detection for optimal data integrity. Finally, Hitachi
offers the only enterprise-class hard drive utilizing a head load/unload ramp to
help minimize drive failures as a result of handling during integration.
Proven PMR technology
The Ultrastar 15K450 is the first enterprise-class drive from Hitachi to use
Perpendicular Magnetic Recording (PMR) technology. PMR has already been in use
across the company’s mobile and desktop product lines and has been proven ready
for the demanding mission-critical server and storage applications in the
enterprise environment.
Specification
| Model(s) |
HUS154530VLS300 |
HUS154545VLS300 |
HUS154545VLF400 |
| Interface |
SAS 3Gb/s |
SAS 3Gb/s |
FCAL 4Gb/s |
| Capacity (GB) 1 |
300 |
450 |
450 |
| Sector size (variable, Bytes/sector) |
512-528 (4 byte incr.) |
512-528 (4 byte incr.) |
512-528 (8 byte incr.) |
| Recording zones |
18 |
23 |
23 |
| Data heads (physical) |
8 |
8 |
8 |
| Data disks |
4 |
4 |
4 |
| Max. areal density (Gbits/sq. in.) |
183 |
183 |
183 |
| Performance |
|
|
| Data buffer (MB) 2 |
16 |
16 |
16 |
| Rotational speed (RPM) |
15,000 |
15,000 |
15,000 |
| Latency average (ms) |
2.0 |
2.0 |
2.0 |
| Media transfer rate (Mbits/sec, max) |
1738 |
2120 |
2120 |
| Interface transfer rate (MB/sec, max) |
300 |
300 |
425 |
| Sustained transfer rate (MB/sec, typ.) |
130-100 |
160-100 |
160-100 |
| Seek time (read, ms, typical) 3 |
3.6 |
3.6 |
3.6 |
See here for detailed specs.
