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Hard disk drives
 
   
5.25 inch hard disk drive
Discontinued products

Hitachi no longer sells or manufactures these 5.25" Disk Drive models, however, you can still obtain product specifications and jumper settings.

Performance specifications
   
Item
Unit DK511-5 DK511-8 DK512A DK512C DK521
Interface
- ST506 ESDI SCSI ST506
Total Capacity
Formatted MBytes 40 67.4 134.8 146.7 40
Track Capacity
Formatted Bytes 5700 6740 16384 17920 6740
Sector Length
Bytes 256 512 256
Number of Cylinders
- 699 823 819 823
Number of Heads (Data + Servo)
- 1+7 10+1 6+1
Disk Speed
rpm 3600 3482 3600
Power Requirements
12V(MAX) A(MAX) 5 4.2 5 3.5
12V(TYP) A(TYP) 2.5 1.7 2.5 1
5V(MAX) A(MAX) 2 1.3 2.5 1
5V(TYP) A(TYP) - - 1 2 0.6

Item
Unit DK522 DK522C-10 DK524 DK524C-20 DK514-38
Interface
- ESDI SCSI ESDI SCSI ESDI
Total Capacity
Formatted MBytes 91 88 173.1 168.9 330.1
Track Capacity
Formatted Bytes 18432 17920 26112 25600 23580
Sector Length
Bytes 512 256/512 512
Number of Cylinders
- 823 819 1105 1100 903
Number of Heads (Data + Servo)
- 6+1 14+1
Disk Speed
rpm 3600
Power Requirements
12V(MAX) A(MAX) 3.6 4.5
12V(TYP) A(TYP) 1.1 2
5V(MAX) A(MAX) 1.2 1.5 1.2
5V(TYP) A(TYP) 0.7 0.8 1 -

Item
Unit DK514S-38D/38S DK514C-38 DK515-78 DK515C-78 DK515S-78S/D
Interface
- SMD SCSI ESDI SCSI
Total Capacity
Formatted MBytes 330.1 321.8 673.1 670.5 673.1
Track Capacity
Formatted Bytes - 25600 35328
Sector Length
Bytes 512 256/512 512 256/512 512
Number of Cylinders
- 903 898 1361 1356 1361
Number of Heads (Data + Servo)
- 14+1
Disk Speed
rpm 3600
Power Requirements
12V(MAX) A(MAX) 4.5 4 4.5
12V(TYP) A(TYP) 2
5V(MAX) A(MAX) 1.2/2.2 1.5 1.2 0.9 1.2
5V(TYP) A(TYP) 0.5/1.0 1.2 - - 0.7

Item
Unit DK515C-78D DK516-12 DK516-15 DK516C-16 DK516C-16D DK517C-37
Interface
- SCSI ESDI SCSI SCSI-2
Total Capacity
Formatted MBytes 670.5 1056 1321 1342.2 2873.1
Track Capacity
Formatted Bytes 35328 39424 41472
Sector Length
Bytes 256/512 512
Number of cylinders
- 1356 1787 2235 2172 3299
Number of Heads (Data + Servo)
- 14+1 15+1 21+1
Disk Speed
rpm 3600 5400
Power Requirements
12V(MAX) A(MAX) 4.5 5 5.2
12V(TYP) A(TYP) 2 2.5 1.85
5V(MAX) A(MAX) 2.2 1 0.9 -
5V(TYP) A(TYP) 1.4 - - - - 2





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