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Forum Discussion
Data integrity rn104
I am using a rn104 for my main media server and run backups from the rn104 to external drives
MY drives in the nas are WD REDS in JBOD mode
What I was wondering is there any data integrity checking built into the rn104 eg Md5 checksuming ect
If there is how do I enable this feature and where would it report a error it found some
Also should I use the built in anti virus or a external one like avast running off a windows tower
MY drives in the nas are WD REDS in JBOD mode
What I was wondering is there any data integrity checking built into the rn104 eg Md5 checksuming ect
If there is how do I enable this feature and where would it report a error it found some
Also should I use the built in anti virus or a external one like avast running off a windows tower
8 Replies
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Bit-rot protection can be enabled/disabled at the per share level.
There may be a performance impact from using anti-virus particularly on a cost effective device such as the RN104 but Anti-Virus software running on the NAS would scan files on the NAS for viruses. Anti-Virus software running on your PC presumably wouldn't scan files on the NAS itself.
mdgm wrote:
Anti-Virus software running on your PC presumably wouldn't scan files on the NAS itself.
Sometimes there are settings that do allow this, especially if the NAS shares are mounted on the PC as drive letters.
Also, if the AV software includes real-time protection, the files on the NAS will be scanned whenever a PC application opens them.
- Yes my antivirus (AVAST) does support scanning network devices I have tryed and it deffinitly scans the files inside the nas
So how if I enabled bit rot protection on my nas how would I know if it detected corruption and would there be any point as I use JBOD mode so there is no redundancy. What I am hoping is the nas scans its self for corruption and notifies me of the problem so I could restore the file from a separate Backup - Could you also explain a little more on how bit rot protection works
1 How do I schedule scans
2 How would I know if there is corruption
3 Does it scan the file when it's being accessed
4 Is there any point in enabling it as my setup is JBOD not RAID
And a couple of different questions
A) As my setup is not raid is there any point in using the volume tools scrub, balance, defrag, disk test
B) what is the best ethernet teaming policy I currently use round robbin
Sharpy wrote:
3 Does it scan the file when it's being accessedIf checksums are enabled, they are verified whenever a data block is read from the disk. So you'll get an error whenever you (or a NAS system process) reads the file.
Sharpy wrote:
4 Is there any point in enabling it as my setup is JBOD not RAIDYou'd detect corruption if the checksums are enabled. But Netgear's bitrot repair depends on RAID.
Sharpy wrote:
A) As my setup is not raid is there any point in using the volume tools scrub, balance, defrag, disk testYes. Defrag and disk test have nothing to do with RAID. Balance can reclaim free space (even on jbod) so it also makes sense to run it on jbod. Scrub will verify the btrfs checksums.
Sharpy wrote:
B) what is the best ethernet teaming policy I currently use round robbinOn the RN104 the best policy is to leave teaming off. Your NAS is processor bound, and can't keep up with a single gigabit connection. So there's really no point to teaming.
More generally - If your switch or router supports LACP, then use that. Otherwise I'd normally suggest ALB and TLB (in that order). All the non-LACP modes can cause problems, so if you see connectivity or speed issues then you should revert back to non-bonding mode.
- Thanks for that I understand most of it
You said Scrub will verify the btrfs checksums.
That is not files like movies photos music etc but the btrfs file system itself (why does that need checking for integrity)
You also said there is no point in enabling ethernet teaming I wasent after a faster connection it was more for fail over or for a separate vlan so this would still be ok and if so what teaming would you use - Thanks for that I understand most of it
You said Scrub will verify the btrfs checksums.
That is not files like movies photos music etc but the btrfs file system itself (why does that need checking for integrity)
You also said there is no point in enabling ethernet teaming I wasent after a faster connection it was more for fail over or for a separate vlan so this would still be ok and if so what teaming would you use
Sharpy wrote:
That is not files like movies photos music etc but the btrfs file system itself (why does that need checking for integrity)The checksums do check the file integrity. If bitrot protection is turned on and you have a redundant RAID, then the checksums are part of Netgear's bit-rot protection.
Sharpy wrote:
You also said there is no point in enabling ethernet teaming I wasent after a faster connection it was more for fail over or for a separate vlan so this would still be ok and if so what teaming would you usePersonally I never saw much point to NIC fail over on my network - I haven't ever seen a case where the second ethernet connection would still work when the first failed. ALB likely would work, not sure about round-robin. Probably you'd need to test it by unplugging the first NIC and seeing if you can reach the NAS from a PC after you do that. Then replace the ethernet cable, and unplug the second one (repeating that test).
If you want to connect the second NIC to a different network, then you wouldn't want teaming at all. You'd set the switch to have the second NIC on the VLAN you want,and make the connection untagged.
If you meant a VPN (instead of a VLAN), then we'd need more information on exactly how the VPN was being set up. I use OpenVPN on my router, and that doesn't need anything special configured on the ReadyNAS.
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