Synology – Speedup RAID rebuild time
A rebuild of a failed disk can by design take two days.
If you raise the “speed limit” it can go faster.
/proc/sys/dev/raid
Have two files:
speed_limit_min
speed_limit_max
Old versions of DSM (Synology firmware) has a limit in “speed_limit_min” of 1000.
New versions have 10000.
Remember to use the newest version of DSM, but you can still edit the value by hand.
echo 20000 > /proc/sys/dev/raid/speed_limit_min
