Seagate Elite ST43402ND, Reference Manual

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10 ST43401N/ND and ST43402ND Reference Manual, Rev. C
To evaluate the air-flow design, place the drive in its final mechanical position
and perform random read and write operations. After the temperatures
stabilize, measure the surface (case) temperatures of the components listed
in the appropriate table below. The mean time between failures (MTBF)
values assume that the drive operates below the specified reliability guide-
lines.
Table 1. ST43401N/ND air-flow evaluation
Office Computer
environment room
MTBF MTBF Max
200k hours 300k hours allowable
Card Component Reference case temp* case temp* case temp*
S/RYFX PERI-2 D540 45 35 60
S/RYFX Video AMP F826 55 45 70
S/RYFX RDS G115 55 45 70
S/RYFX ECLTTL D212 47 37 62
S/RYFX SCRAM C051 44 34 59
S/RYFX DRAM B405 42 32 57
FYEX Motor control U10(A211) 51 41 66
HDA housing Figure 6 60
*
Temperature in
o
C
Table 2. ST43402ND air-flow evaluation
Office Computer
environment room
MTBF MTBF Max
200k hours 300k hours allowable
Card Component Reference case temp* case temp* case temp*
AYGX PERI-2 U40 (D540) 45 35 60
AYGX Video AMP U44 (F826) 52 42 67
AYGX RDS U56 (G115) 56 46 71
AYGX ECLTTL U33 (D709) 46 36 61
AYGX SCRAM U6 (B145) 45 35 60
AYGX Driver U26 (B107) 45 35 60
FYEX Motor control U10 (A211) 49 39 64
BYGX ECLTTL U7 (D417) 52 42 67
HDA housing Figure 6 60
*
Temperature in
o
C