When you go to Global Settings in Storage Manager, on Raid Resync Speed Limits, which option is selected? If "Lower the impact" it makes it much more variable. If you go for "Run RAID resync faster" it will mostly run as fast as possible, with a more noticeable impact on other processes.

Run RAID resync faster. /proc/sys/dev/raid/speed_limit_max= 600000. /proc/sys/dev/raid/speed_limit_min= 300000. As for /sys/block/md2/md/stripe_cache_size(also used to speed up resync) I just checked for all three options and they all come back as 1024(same value as when I check on DSM 6.1.6).

2) Go to Storage Pool 1. 3) Select "Global Settings" button at the top. 4) Adjust the "RAID Resync Speed Limits". See the note: "This setting will affect the speed limit when running data scrubbing, repairing, expanding storage pools, and changing RAID types."
1 Likes Hi everyone, I have a DS916+ running DSM 7.0. I just spend almost 24h for data scrubbing to run on the new 2x 18tb drives in Raid1 with no data on them. While this was happening the CPU was at 0% all the time and I was not doing anything else on the NAS. The process is just as slow on another identical NAS running DSM6
Sprawdź listę zgodności produktów Synology, aby zobaczyć, które dyski są zgodne z urządzeniem Synology. Kalkulator RAID Synology zapewnia szacunkowe zużycie pamięci masowej dla konfiguracjami dysków mieszanych i RAID. Systemy Synology wymagają około 10 GB miejsca do wykorzystania w konfiguracjach RAID 1.
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synology raid resync speed limits