IBM offers a distinct disk drive
products that provides premium performance designed to speed access to data for such
advanced applications as OLTP, video editing, and data mining. The Ultrastar 9LP -
providing 9.1 GB of storage, respectively - are optimized for enterprise server and
storage subsystem applications where higher capacity is required in a smaller footprint.
Operating at 7200 RPM rotational speeds, the 9LP provides fast read seek times as low as
6.5 ms, allowing users to store double the number of terabytes in half the space when
compared to other storage solutions. The Ultrastar 9LP are easily integrated into today's
existing enterprise servers.
As members of the IBM Ultrastar family of disk drives, the Ultrastar 9LP drive provides
reliable, high-performance storage for high-end and PC LAN server systems that must
deliver outstanding throughput for demanding database, Internet/intranet, decision
support, data mining, and On-Line Transaction Processing (OLTP) applications.
Featuring 9.1 GB in a 3.5-inch form factor, the Ultrastar 9LP provides two of the
highest capacities in their class. To provide exceptional performance, these drives
combine a rotational speed of 7200 RPM and fast seek times as low as 6.5 ms with a new IBM
custom controller that incorporates command queuing and a large programmable
multisegmented 1 MB cache. Hardware automation further reduces SCSI command overhead and
cache accessing time.
Configuration
| Interface |
Ultra SCSI Narrow |
| Formatted capacity (512 bytes) |
9.1 GB |
| Number of disks |
5 |
| Number of heads |
10 |
| Areal density (maximum) |
1253 Mbits / sq. in |
| Recording density (maximum) |
150 KBPI |
| Track density |
8356 TPI |
| Sector size |
512 to 732 Bytes |
| Channel |
PRML |
| Encoding method |
RLL (16/17) |
| Head type |
Magnetoresistive Extended (MRX) |
| Dedicated landing zone |
Yes |
Performance
| Media data rate (banded) |
92.2 to 179.2 Mbits/sec |
| Interface transfer rate (max) |
40 MB/sec |
Access times
(pop. avg)
Average read
Track-to-track read |
6.5/7.5 ms
0.7 ms |
| Rotational speed |
7200 RPM |
| Latency (average) |
4.17 ms |
| Buffer size |
1 MB |
Reliability
| Recoverable read errors |
< 10 in 10E13 bits read |
| Non-recoverable read errors |
< 10 in 10E15 bits read |
| S.M.A.R.T. / PFA |
Yes |
| Temperature sensor |
Yes |
Physical dimensions
| Height |
26.0 mm |
| Width |
101.85 mm |
| Depth |
147.0 mm |
| Weight |
570 g |
| Mounting |
Industry standard, all orientations |