I doubt that the Command Timeouts are the result of power problems. Instead they most probably reflect difficulties with reading certain sectors. You could examine the SMART logs with a tool such smartctl (smartmontools). These logs may identify the problematic LBAs, if any.
Seagate's spec (see my previous post) states ...
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This attribute tracks the number of command timeouts as defined by an active command being interrupted by a HRESET and COMRESET or SRST or another command.
Your data indicate that the drive recorded 2 "commands with > 7.5 second completion".
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Raw [1 - 0] = Total # of command timeouts, with Max hold of FFFFh
Raw [3 - 2] = Total # of commands with > 5 second completion, including those > 7.5 seconds
Raw [5 - 4] = Total # of commands with > 7.5 second completion
The Command Timeout attribute value is reset and recomputed after every 10,000 ATA commands. AISI, this means that the attribute may improve if problematic sectors are replaced with spares.
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The normalized value is only computed when the number of commands is in the range 10^3 to 10^4. The CommandCount and ErroCount are cleared when Number Of Commands reaches 10^4.
Edit: I would think that command timeouts should not affect data integrity as long as the system remains powered and the OS is aware of them.