![]() Note that all of these requires that you ssh in to the NAS box, if you aren't comfortable with the linux command line then perhaps make a request to Synology to put in an fsck button in the web interface. While the cyberciti site suggests using lsof to find what is using the volume then using the service shutdown scripts in /usr/syno/etc/rc.d/ before using the umount command. Someone suggests using the -d (debug) option on the shutdown task such as syno_poweroff_task -d However reading some more pages like and they seem to suggest that things have changed in DSM 5+. The poweroff task performs some unmounts (volume 1 etc.). There is a good article called Scrub Synology RAID disks that also tells you how to run the file system check tool called fsck even though there is no option in the web interface for it.Įdit: The above page seems to be gone but it basically saidĬommands for performing an offline fsck: syno_poweroff_task Personally, I do data scrubbing once a week, with work scrubbing on the weekend and home scrubbing during the week while I'm at work. Many people run a data scrub once a month. You can use you NAS while this is going but it will be a bit slower. This will take hours as it reads all sectors of all of the disks and performs some math to see if the checksum data adds up properly. Wait for the disk group to fully synchronise, then perform a data scrub.Īs of Synology OS v4.2 data scrubbing can be accessed from Storage Manager -> Disk Group -> Manage -> Start data scrubbing For data scrubbing to be available you need at least 3 disks, with at least 1 redundant drive and at least 2 data drives. Due do this feature and some patterns of use, like Linux and some Windows applications. This feature parks the heads of the drive after 8 seconds of idle activity, and acess to the disk will unpark the heads. If you don't want the data scrub to impact your use of the nas for 1-2 days it takes to run, use the time session part of the data scrub, like 1am to 8am everyday (it pauses and resume everyday until it finishes) I run a full SMART test once a week per drive, but space out each start time by 12 hours. They have a freature called 'Intellipark', which is not so intelligent after all. If you haven't already, create a disk group. Search the model on Google, it is a Green drive. As Daxlerod has stated you should use the SMART tools, however you also need to perform what is called data scrubbing.
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