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Hard Disk Drive(HDD)
The Tecra 700 offers one "Upgradable type" hard disk drive packs. Both of them contain the hard disk controller(HDC). The specifications of the HDD are as follows.
MakerToshibaIBM
ModelMK2720FCDRPA-21215
(M1200)
Capacity [million B]"1,216""1,217"
[MB]"1,158""1,161"
Dimensions W[mm]70.070.0
H[mm]19.017.0
D[mm]100.0100.0
Weight[g]220.0186.0
Logical configuration
Number of heads1616
Byte per sector[B]512512
Sector per track6363
Number of cylinders"2,358""2,358"
Sector per drive"2,376,864""2,376,864"
Physical configuration
Number of disks53
Number of heads96
HeadTFHMR
Coding8-9RLL2-7RLL
Byte per sector[B]512512
Number of cylinders"2,920""2,920"
Performance
Rotation speed [rpm]"4,200""4,900"
Data transfer rate
Media t buffer [Mb/s]44.936.2-57.0
Buffer to host [Mb/s]16.611.1
Track density [Track/mm]203---
[TPI]---"6,350"
Bit density [bit/mm]3.50K---
[BPI]---"110,300"
Flux density [FPI]
Access time
Track to track [ms]3.04.0
Average (read)[ms]13.012.0
Average (write)[ms]13.013.0
Maximum (read)[ms]25.023.0
Maximum (write)[ms]25.024.0
Average latency[ms]6.16.1
Start time Typ.[s]53
Max.[s]2010
Stop time Typ.[s]88
Max.[s]1010
Standby to idle Typ.[s]42.3
Max.[s]2010
Interleave factor1:11:1
Buffer size[KB]12864
Read ahead cacheYesYes
Write cacheYesYes
Interface PIO with IORDYMode3 11.1MB/s
without IORDYMode3 8.3MB/s
DMA
single wordMode2 8.3MB/s
multi wordMode1 11.1MB/s
Power consumption
Spin up[W]3.903.50
Seek[W]3.602.60
Write[W]2.902.60
Read[W]2.902.60
Idle[W]1.401.30
Standby[W]0.350.30
Sleep[W]0.150.10
Location: under the upper right corner of system unit