7.6 Reliability
7.6.1 Cable noise interference
To avoid any degradation of performance throughput or error rate when the interface cable is routed on
top or comes in contact with the HDA assembly, the drive must be grounded electrically to the system
frame by four screws. The common mode noise or voltage level difference between the system frame
and power cable ground or AT interface cable ground should be in the allowable level specified in the
power requirement section.
7.6.2 Start/stop cycles
The drive withstands a minimum of 40,000 start/stop cycles in a 40° C environment and a minimum of
10,000 start/stop cycles in extreme temperature or humidity or complete stop disk rotation. See Figure
48 on page 0 and Figure 49 on page
0
.
7.6.3 Preventive maintenance
None
7.6.4 Data reliability
§
Probability of not recovering data: 1 in 10
13
bits read
§
ECC On The Fly correction
•
1 Symbol : 8 bits
•
3 Interleave
•
12 ECCs are embedded into each interleave
•
15 Symbols, 5 Symbols per each interleave, for On The Fly correction
•
This implementation always recovers 5 random burst errors and a 113 bit continuous burst
error
.
Deskstar 40GV & 75GXP hard disk drive specifications
53
Содержание DTLA-305040 - Deskstar 41.1 GB Hard Drive
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