Reliability
SMART tells stories in trends, not snapshots
Updated May 2026 · 7 min read
One scary raw value can be a firmware quirk. Rising reallocated sectors while your filesystem throws IO errors is not a quirk—it is a countdown.
Attributes readers actually watch
Reallocated sector count, pending sectors, and offline uncorrectable errors map closest to physical media problems.
CRC or interface errors often implicate cables or controllers, especially on external enclosures.
When to clone urgently
Copy data to healthy media when errors accelerate week over week or chkdsk starts finding new bad clusters.
Do not run destructive benchmarks on a suspect disk unless you already have a backup and accept total loss.
Partitioning after health returns green
Once a replacement SSD is in place and verified, partition it calmly with GPT, aligned layouts, and fresh BitLocker policies if needed.
Keep the old disk shelved for a month before secure erase—just in case you forgot an obscure encrypted archive.