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IBM Ultrastar 18XP
- 18,2Gb USCSI Narrow
IBM offers a distinct
disk drive product that provides premium performance designed to speed access to data for
such advanced applications as OLTP, video editing, and data mining. The Ultrastar 18XP -
providing 18.2 GB of storage - optimized for enterprise server and storage subsystem
applications where higher capacity is required in a smaller footprint. Operating at 7200
RPM rotational speeds, the 18XP 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. These products are easily integrated into today's existing enterprise
servers.
| Configuration |
|
|
|
Interface |
Fast |
|
Formatted capacity
(512 bytes) |
18.2 GB |
|
Number of disks |
10 |
|
Number of heads |
20 |
|
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 |
|
| Power |
Startup current
(max.) |
1.6 / 2.7 Amps |
|
Idle (average) |
9.2 / 13.1 Watts |
|
Read/write (typical) |
11.6 / 15.4 Watts |
|
Power consumption efficiency index |
.0009 / .0007 Watts / MB |
|
| Physical dimensions |
Height |
26.0 / 41.0 mm |
|
Width |
101.85 mm |
|
Depth |
147.0 mm |
|
Weight |
570 / 930 g |
|
Mounting |
Industry standard, all orientations |
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