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Adam_a

Synology DiskStation Manager (DSM) 6.X Review Discussion

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Synology’s DSM is one of the easiest NAS OS to use that can be found. On top of its overall ease-of-use and management, it is extremely comprehensive. Synology packs DSM with enough features that a media enthusiast, all the way up to a medium-sized business with surveillance needs, can use it. Before the 6.0 update, the OS was already a wonderful product and Synology just took what was working and improved upon it. While every feature in DSM isn’t clear-cut, the learning curve on most is small. Users who have the faintest familiarity with any of the programs offered (e.g., if one is familiar with a video streaming product, Video Station is fairly simple to figure out), they would easily be able to learn how to use them all. If there is any confusion, Synology does offer a free forum with more than enough useful advice. 

 

Synology DiskStation Manager (DSM) 6.X Review

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I'd just like to make a comment on something that was said regarding the “near-continuous data protection” on the snapshot and replication.

Whilst this is true on the shared folders when it's based on BTRFS, the iSCSI LUN snapshots couldn't be further from the truth. 

We have a 6TB LUN on an RS3614xs, taking a snapshot takes around 1.5 hours (last night 20:00 -> 21:31) and then to replicate this to a secondary system (RS814RP+) takes until 10:00 the next morning!   The changes are normally 15->20GB per day, which according to their interface is a transfer rate of 2.3MB/s.

Synology use their own system for creating LUNs (a 6TB file within a volume in our case) and then different files for tracking block allocations (normally a 6GB file) and it's just way too slow.  I know people may say "Well, there are so many things it could depend on, it might just be your system", but it's hard to believe that, sorry, but that shouldn't explain why I'm getting network transfer speeds like that when the two machines are in the same rack in a 1Gb switch on adjoining ports on the same vlan.

replication.png

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