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2-2 C141-E163
2.1.2 Function specifications
Table 2.2 shows the function specifications of the IDD.
Table 2.2 Function specifications
Specification
Item
MAP3147FC MAP3735FC
Formatted capacity/device (*1) 147.01 GB 73.50 GB
Number of disks 4 2
Number of heads 8 4
Number of cylinders (*2) 47,926 47,996
Formatted capacity/track (B) 272,896 to 479,232
Number of rotations min
-1
(rpm) 10,025±0.2%
Average latency time 2.99 msec
Track to Track
0.3 ms/0.5 ms
Average
4.5 ms/5.0 ms
Seek time (*3)
(Read/Write)
Full stroke
10.0 ms/11.0 ms
Start/stop time
(*4)
Start time
Stop time
30 s typ. (60 s max.)
30 s typ.
Recording mode 32/34 MEEPRML
External
dimensions
Height:
Width:
Depth:
25.4 mm
101.6 mm
146.0 mm
Weight (max) 0.75 kg
Power consumption (*5) 11.5 W 8.6 W
Interface Cable length: 30 m max
Disk drive
64.1 to 107.86 MB/s
Data
transfer
rate (*10)
FC-AL 212.5 MB/s max.
Logical data block length (*11) 512 to 528 byte (Fixed length)
Command specification
FC-PLDA (NCITS TR-19),
FC-PH (ANSI X3.230-1994), FC-PH-2 (ANSI X3.297-1996),
FC-AL (ANSI X3.272-199X), SCSI-FCP (ANSI X3.269-199X)
Data buffer 8 MB FIFO ring buffer
Acostic noise (Ready) 3.4 bels
(*1)
The formatted capacity can be changed by changing the logical block length and using spare sector
space. See Chapter 3 for the further information. The formatted capacity listed in the table is an
estimate for 512 bytes per sector.
(*2)
The number of user cylinders indicates the max., and includes the alternate cylinder. The number of
user cylinders and alternate cylinders can be specified at format of the IDD.
(*3)
The positioning time is as follows: