The data scrubing part is very usefull. Particularly when you say that a shared folder must enable scrubing at creation, thanks for the tip! I always watch your synology content, keep the good work!
Excellent video Frank! you have touched all the right bullet points. btw, linus tech tips a few years ago actually data loss happen due to lack of data scrubbing.
I have no excuses for not buying a UPS yet. The power in my part of the world is extremely reliable. ( We had a power outtage due to a local house fire 2 years ago and that's the first outage in probably 10+ years ). But, when it happens, it can be a mess. As it turned out, my Synology suffered no ill effects. My QNAP, on the other hand, had a few corrupt apps which was fairly easy to recover from. But, it could of been much worse and was a good warning sign.
I have tested (in a lab environment) the effect of sudden power outages on Synology devices during read/write operations and I can say that it doesn't seem to happen frequently. A few times, data scrubbing would run on boot to ensure data integrity, but in the ~15 minutes or so I tested, I didn't actually corrupt anything. Regardless, it's still sadly a possibility.
Think of permissions in terms of users AND groups. If a user is part of a group that has permission to a shared folder, they will be able to access it. Alternatively, if a user has permission to a shared folder and the group does NOT have permission to the shared folder, the user will have access to it. From there, no access is the highest priority, so if you select "no access" for a user OR a group, the user will not be able to access it.
Great video Frank. I find it odd why though the folder for Abb and mailplus aren't marked for data integrity since the system creates them! I even redid them and later found it unmarked after restarting the processes.
It seems that for some, the option is enabled and for others, it isn't. I wouldn't personally worry about it for ABB as the data will be cycled regularly (from new backups), but you can mount a different shared folder if you'd prefer.
I’ve seen if the folder was created under DSM 6 and then upgraded you could see this occur. Same for folder compression. I was able to resolve by deleting the default ABB shared folder and creating a new one.
I checked my shares and all were set with enable data checksum EXCEPT for the ActiveBackupForBusiness folder. I think this folder was created by the app when I installed it. I have not used the app yet so not too late to change this if needed. I’ll check the docs for ABfB and see if there’s any information on this, but have you seen this with ABfB? Or any other Synology apps?……Suggestions?
I wouldn't worry about any of the folders created by Synology. It's mainly the folders that you created. The ABB folder is accessed regularly which limits the potential for bit-rot, so you're good!
I had no idea that my Data Scrubbing hadn't been effective this whole time because I hadn't enabled the "Data Checksum" when I created the Shared Folders; they were created in EXT4 originally. Now that I know I need to create new Share Folders, how will that work with my Homes Folders as they're not created manually?
@@cyberwasp461FYI, I moved removed everything out of my "homes" folder (not a quick job...) into a temporary folder, disabled the "homes" service, deleted the original "homes" folder, then re-enabled the service and it DOES have the "Data Checksum" activated by default. Bit of a pain in the @rse, but it got the job done. I'm in the process of doing this will ALL my other Shared Folders, the only possible exception I may make it to my "surveillance" folder.
Just saw this comment - I didn't realize that recreating it will have that option enabled. I need to check my NAS now to see if mine is/isn't enabled. I know it's a pain, but glad you got it set up!
Hi, I must still buy an UPS. As I understand it, the UPS is connected to the USB port of the (in my case) DS1522+ isn't it? Where are the Networkports you see on a UPS for?
By the way, when I give someone access to my NAS, I always test the useraccount to see if I did not give them access which I did not want them to have, before giving them the username and password.
Thank you so much for your generous donation! That is correct - the USB port from the UPS will be connected to the NAS's USB port. The network ports are for grounding the ethernet connection I believe, but I had major problems with packet loss from that so I'm not sure I'd use it.
@@WunderTechTutorials i see, thank you. I will have a problem. Because I have 2 external HDD’s connected to both USB ports for hyper backup. So I probably have to workmwith a hub on one of the ports. Is that possible?
I think that it is, but I unfortunately can't say for sure because I've never done it. You technically can configure a UPS NUT Server, but it's a lotttt more complicated. I'd use the USB if possible.
Another great one! I always look forward to your videos! One thing I did was set up a specific email account for all my NAS’s. I used that email account on them as you suggested. Then I added that email account to my iPhone as a VIP account. Now whenever an email notification comes to that inbox, I get a phone notification alerting me. It’s worked great. Let’s me know when my ABB and Hyper Backups complete, when Data Scrubbing is complete, when Security and Drive Usage reports are ready, and when they are running UPS power. Gotta love Synology’s great tools and apps! 👍🏻👍🏻
The data scrubing part is very usefull. Particularly when you say that a shared folder must enable scrubing at creation, thanks for the tip! I always watch your synology content, keep the good work!
Great video Frank! Such a pleasure to watch.
Thanks, Tony!
Excellent video Frank! you have touched all the right bullet points. btw, linus tech tips a few years ago actually data loss happen due to lack of data scrubbing.
Thanks so much, Avi! I didn't realize that was due to data scrubbing!
Valid points
I have no excuses for not buying a UPS yet. The power in my part of the world is extremely reliable. ( We had a power outtage due to a local house fire 2 years ago and that's the first outage in probably 10+ years ). But, when it happens, it can be a mess. As it turned out, my Synology suffered no ill effects. My QNAP, on the other hand, had a few corrupt apps which was fairly easy to recover from. But, it could of been much worse and was a good warning sign.
I have tested (in a lab environment) the effect of sudden power outages on Synology devices during read/write operations and I can say that it doesn't seem to happen frequently. A few times, data scrubbing would run on boot to ensure data integrity, but in the ~15 minutes or so I tested, I didn't actually corrupt anything. Regardless, it's still sadly a possibility.
Nice one thanks
The group hierarchy confuses me ... just cannot get my head around it at all ....
Think of permissions in terms of users AND groups.
If a user is part of a group that has permission to a shared folder, they will be able to access it. Alternatively, if a user has permission to a shared folder and the group does NOT have permission to the shared folder, the user will have access to it.
From there, no access is the highest priority, so if you select "no access" for a user OR a group, the user will not be able to access it.
Great video Frank. I find it odd why though the folder for Abb and mailplus aren't marked for data integrity since the system creates them! I even redid them and later found it unmarked after restarting the processes.
It seems that for some, the option is enabled and for others, it isn't. I wouldn't personally worry about it for ABB as the data will be cycled regularly (from new backups), but you can mount a different shared folder if you'd prefer.
I’ve seen if the folder was created under DSM 6 and then upgraded you could see this occur. Same for folder compression. I was able to resolve by deleting the default ABB shared folder and creating a new one.
I checked my shares and all were set with enable data checksum EXCEPT for the ActiveBackupForBusiness folder. I think this folder was created by the app when I installed it. I have not used the app yet so not too late to change this if needed. I’ll check the docs for ABfB and see if there’s any information on this, but have you seen this with ABfB? Or any other Synology apps?……Suggestions?
I wouldn't worry about any of the folders created by Synology. It's mainly the folders that you created. The ABB folder is accessed regularly which limits the potential for bit-rot, so you're good!
@@WunderTechTutorials Thanks.
I was going to ask you exactly the same thing.
I had no idea that my Data Scrubbing hadn't been effective this whole time because I hadn't enabled the "Data Checksum" when I created the Shared Folders; they were created in EXT4 originally.
Now that I know I need to create new Share Folders, how will that work with my Homes Folders as they're not created manually?
I just asked him as ABB and Mailplus are automatically created without integrity check.
@@cyberwasp461FYI, I moved removed everything out of my "homes" folder (not a quick job...) into a temporary folder, disabled the "homes" service, deleted the original "homes" folder, then re-enabled the service and it DOES have the "Data Checksum" activated by default. Bit of a pain in the @rse, but it got the job done.
I'm in the process of doing this will ALL my other Shared Folders, the only possible exception I may make it to my "surveillance" folder.
Just saw this comment - I didn't realize that recreating it will have that option enabled. I need to check my NAS now to see if mine is/isn't enabled. I know it's a pain, but glad you got it set up!
Does data scrubbing apply to iSCSI LUN as well?
It applies to the storage pool/volume, and since the iSCSI LUN is created on top of that, yes, it does apply.
Didn't have enable data checksum checked. Might have saved me a headache down the line. Keep it up!
Thanks so much for your generous donation! I'm glad to hear some of the info helped!
Hi, I must still buy an UPS. As I understand it, the UPS is connected to the USB port of the (in my case) DS1522+ isn't it? Where are the Networkports you see on a UPS for?
By the way, when I give someone access to my NAS, I always test the useraccount to see if I did not give them access which I did not want them to have, before giving them the username and password.
Thank you so much for your generous donation!
That is correct - the USB port from the UPS will be connected to the NAS's USB port. The network ports are for grounding the ethernet connection I believe, but I had major problems with packet loss from that so I'm not sure I'd use it.
@@WunderTechTutorials i see, thank you. I will have a problem. Because I have 2 external HDD’s connected to both USB ports for hyper backup. So I probably have to workmwith a hub on one of the ports. Is that possible?
I think that it is, but I unfortunately can't say for sure because I've never done it. You technically can configure a UPS NUT Server, but it's a lotttt more complicated. I'd use the USB if possible.
@@WunderTechTutorials thank you. 😊
Thank you for this info. Got most of them knocked out today.
Another great one! I always look forward to your videos! One thing I did was set up a specific email account for all my NAS’s. I used that email account on them as you suggested. Then I added that email account to my iPhone as a VIP account. Now whenever an email notification comes to that inbox, I get a phone notification alerting me. It’s worked great. Let’s me know when my ABB and Hyper Backups complete, when Data Scrubbing is complete, when Security and Drive Usage reports are ready, and when they are running UPS power. Gotta love Synology’s great tools and apps! 👍🏻👍🏻
Thank you very much! Sounds like a great setup!