Drawing No. Sheet No. Revision 5
K6602906 10/46 2003/6/12
3 Description
3.1 Characteristics
Table 3.1 Characteristics
Item Specifications
Ultrastar 15K73-73 Ultrastar 15K73-36 unit
Configuration Storage capacity 73.9 36.9 GB
(formatted) (see Note 1,2,13)
Bytes/sector (see Note 3) 512, 516, 520, 524, 528,1024 Bytes
Number of disks 5 3
Number of heads 10 5
Areal density 31.2 Gb/inch
2
Recording method MEEPRML
Performance Seek time average 3.9 / 4.2 ms
read / write full stroke 7.2 / 8 ms
(see Note 5) 1 track 0.4 / 0.5 ms
Average latency 1.99 ms
Rotational speed 15037 rpm
Data transfer rate (In drive) 684 – 960 Mb/s
Start time (see Note 5) 25 s
Data transfer
rate
(Controller)
Single-Ended Asynchronous
Fast-5
Fast-10
Ultra (Fast-20)
5.0 max.
10.0 max.
20.0 max.
40.0 max.
MB/s
(see Note 4) LVD Ultra2 (Fast-40)
Ultra160 (Fast-80)
Ultra320 (Fast-160)
80.0 Max.
160.0 max.
320.0 max.
Buffer size 8M Bytes
Typ.
(Note5)
3sigma Typ.
(Note 5)
3sigma
Power 12V Spin-up, peak 2.20 2.44 2.20 2.44 A
requirement 12V Seek, peak 2.64 2.85 2.45 2.65 A
12V Idle, ave. 0.75 0.81 0.57 0.62 A
5V R/W, peak 1.54 1.65 1.54 1.65 A
5V Read, ave. 1.45 1.56 1.45 1.56 A
5V Write, ave. 1.20 1.28 1.20 1.28 A
5V Idle, ave. 0.60 0.64 0.60 0.64 A
Physical length x width x height 146.0x101.6x25.4 mm
dimensions weight 0.69 0.67 kg
Power
dissipation
+12V Idle / +5V Idle, (Average) 12.0 9.8 W
Energy consumption rate (see Note 12) 0.162 0.266
