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Glossary
The glossary explains technical terms which are necessary to the reader's understanding when
reading this manual.
List of Abbreviations
This list shows the full spelling of abbreviations used in this manual.
The model name of disk drives covered by this manual differs in its ending suffix (Note 1)
depending on its device type (3 types), the electrical conditions of the SCSI interface used to
connect the disk drive to the host system and its capacity and data format at the time it was
shipped, but in this manual, except in cases where models need to be especially distinguished,
a representative model name (Note 2) is used. In addition, these disk drives are called
Intelligent Disk Drive (IDD), "drive" or "device" in this manual.
Note 1:
Model Name
M29 0 X S A
Format When
Shipped
SCSI Electrical
Conditions
Capacity and
Number of
Heads
Device Type
vi
X: 256-byte format (except for M294x and M295x)
A: 512-byte format (except for M294x and M295x)
B: 1024-byte format (except for M294x and M295x)
S: Single-ended, 8-bit SCSI (all series)
H: Differential, 8-bit SCSI (except for M294x and M295x)
Q: Single-ended, 16-bit SCSI (all series)
R: Differential, 16-bit SCSI (except for M294x and M295x)
C: SCA-1, 16-bit SCSI (M293)
E: SCA-2, 16-bit SCSI (M294x, M295x)
9: 19 heads (M2909)
9: 9 GB (M2949)
3: 13 heads (M2903)
2: 2 GB (M2932, M2952)
5: 15 heads (M2915)
4: 5 GB (M2934, M2954)
0: Full height, large capacity (M2903, M2909)
1: Full height, high performance (M2915)
3: Full height, large capacity, high performance (M293x)
4: Full height, large capacity, high performance (M2949)
5: 1-inch height, high performance (M2952, M2954)
C141-E039-01EN
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