January 16, 20251 yr I’ve been scouring the forums about slow parity sync issues always relating to disks and controllers which I get and I’ve been trying to diagnose those areas but even my cheap disks and controllers seem to move data consistently. Maybe not super fast but over 100MB/s. I watched the throughput during parity sync and it seems to go in small bits at a time where data moves read/write for a sec the. Drops to 0 for a few seconds then moves again. Totaling sync throughput is under 2MB/s. Does this activity seem normal? CPU is barely working Ram is barely used deathstar-diagnostics-20250115-1816.zip
January 16, 20251 yr Community Expert Solution Check/replace cables for parity and disk5 and try again.
January 16, 20251 yr Author Exactly this. First tested the controllers and disks by moving the Sata do a different controller and port. Still slow parity. Swapped Sata cables and boom! Back to normal. Now how does one determine where to buy “good” Sata cables?
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