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Quick References for IBM Mainframe Programming

MAINFRAME DISK CAPACITY TABLE

 

Disk Type

Data Cylinders

Alternate Cylinders

Tracks per Cylinder

Bytes per Track

Bytes per Cylinder

Bytes per module

2305-1

48

6

8

14,136

113,088

5,428,224

2305-2

96

12

8

14,660

117,280

11,258,880

2311

200

3

10

3,625

36,250

7,250,000

2314

200

3

20

7,294

145,880

29,176,000

3330-1

404

7

19

13,030

247,570

100,018,280

3330-11

808

7

19

13,030

247,570

200,036,560

3340-35

348

1

12

8,368

100,416

34,944,768

3340-70

696

2

12

8,368

100,416

68,889,536

3344 (1)

2784

8

12

8368

100,416

275,558,144

3350

555

5

30

19,069

572,070

317,498,850

3375

959

1

12

35,616

427,392

409,868,928

3380 A/B/D/J

885

1

15

47,476

712,140

630,243,900

3380 E

1770

2

15

47,476

712,140

1,260,487,800

3380 K

2655

3

15

47,476

712,140

1,890,731,700

EMC338OK+

3339

3

15

47,476

712,140

2,377,835,460

EMC338OK+ +

3993

3

15

47,476

712,140

2,843,575,020

3390-1

1113

1

15

56,664

849,960

946,005,480

3390-2

2226

1

15

56,664

849,960

1,892,010,960

3390-3

3339

1

15

56,664

849,960

2,838,016,440

3390-9

10017

3

15

56,664

849,960

8,514,049,320

3390-27 (2)

32760

3

15

56,664

849,960

27,844,689,600

3390-54

65520

3

15

56,664

849,960

55,689,279,200

9345-1

1440

0

15

46,456

696,840

1,003,449,600

9345-2

2156

0

15

46,456

696,840

1,502,387,040

 

Fixed Block Architecture (FBA) Devices:

 

Disk Type

Bytes per Block

Blocks per Track

Blocks per Cylinder

Blocks per Actuator

Bytes per Actuator

3310

512

32

352

125,664

64,339,968

3370-Al/BI

512

62

744

558,000

285,696,000

3370-A2/B2

512

62

744

712,752

364,929,024

9332-200

512

73

292

360,036

184,338,432

9332-400

512

73

292

360,036

184,338,432

9332-600

512

73

292

554,800

284,057,600

9335

512

71

426

804,714

412,013,568

9336-10

512

63

315

920,115

471,098,880

9336-20/25

512

111

777

1,672,881

856,515,072

 

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