(*6) The terminator power pin (SCSI connector) which supplies power to other terminators is not used (See Section 4.3).
(*7) High frequency noise is less than 100
2.1.4Error rate
Errors detected during initialization and replaced by alternate block assignments are not included in the error rate. Data blocks to be accessed should be distributed over the disk medium equally.
(1)Unrecoverable error rate
Errors which cannot be recovered within 63 retries and ECC correction should not exceed 10 per 1015 bits.
(2)Positioning error rate
Positioning errors which can be recovered by one retry should be 10 or less per 108 seeks.
2.1.5Reliability
(1)Mean Time Between Failures (MTBF)
MTBF of the IDD during its life time is 1,000,000 hours (operating: 24 hours/day, 7
days/week average DE surface temperature: 40°C or less).
Note:
The MTBF is defined as:
Operating time (hours) at all field sites
MTBF=
The number of equipment failures from all field sites
Failure of the equipment means failure that requires repair, adjustments, or replacement. Mishandling by the operator, failures due to bad environmental conditions, power trouble, host system trouble, cable failures, or other failures not caused by the equipment are not considered.
(2)Mean Time To Repair (MTTR)
MTTR is the average time taken by a
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