Specifications
2-6 C156-E228-02EN
2.1.5 Reliability
(1) Mean time between failures (MTBF)
The MTBF is 120,000 hours or more. Failures due to disk errors are not included.
Conditions
•
Power-on time: 200 hours/month or less
•
LD-on time: 20% or less of power-on time
•
Ambient temperature: 25°C
Note: The MTBF is defined as follows:
Total operating time in all fields (hours)
MTBF =
Number of device failure in all fields
1) Operating time is the total time in which power is supplied.
2) Device failures include failures requiring repair, readjustment, or
replacement. However, they do not include failures that are not due to the
optical disk drive itself but to external factors such as careless device
handling, nonsupport of environmental requirements, power failures, host
system errors, and interface cable errors.
(2) Service Life
This drive will not require overhaul within the first five years of installation if
properly maintained (both disk media and optical parts cleaned) and handled as
recommended.
Data loss:
Data is not guaranteed if a power failure occurs or the I/F cable is
pulled out while:
•
Data is being written to a data block
•
A disk is being initialized (formatted)
•
Defect processing is in progress
Data is not guaranteed either if the drive is moved with the optical
disk cartridge inserted or the drive is exposed to excessive shock or
vibration.
Summary of Contents for MCM3064SS
Page 1: ...C156 E228 02EN MCM3064SS MCM3130SS MCP3064SS MCP3130SS OPTICAL DISK DRIVES PRODUCT MANUAL ...
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Page 42: ...Specifications 2 12 C156 E228 02EN Figure 2 3 Example of alternate processing ...
Page 47: ...3 2 Mounting Requirements C156 E228 02EN 3 5 Figure 3 2 Outer dimensions 1 of 2 ...
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Page 82: ...Installation 4 16 C156 E228 02EN Figure 4 6 SCSI connection check ...
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Page 148: ...SCSI BUS 7 46 C156 E228 02EN Figure 7 21 Bus phase sequence 1 of 2 ...
Page 149: ...7 8 Bus Sequence C156 E228 02EN 7 47 Figure 7 21 Bus phase sequence 2 of 2 ...
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