Repair becomes manageable when every faulty device remains tracked. Each ASIC needs a status, owner, last-action date and next step. This reveals not only repair volume but the actual duration of downtime.
Separate diagnostics from repair
Initial diagnostics should confirm the symptom and exclude external causes such as power, network, temperature or configuration. Only then decide between on-site repair, authorized service or retirement.
Build a spare pool
For a large standardized fleet, define a stock of compatible PSUs, fans and replacement units. Size it using failure history, component lead time and acceptable downtime, and revise it as the fleet ages.
Measure the full cycle
Measure from ASIC shutdown to recommissioning under load—not only technician time. The cycle includes detection, approval, removal, queue, repair, testing and installation. This is the service metric that affects fleet availability.