Thank you so much again (have I said thanks enough..?)
Performance on the drives is not a huge concern as I'll just be using it for backup. I'm a little confused between the difference in likelihood of data retrieval on disc A if disc B goes down between JBOD and standard configuration. For convenience just showingaas one drive would be simpler but you say there is more chance of losing data on both discs if one goes down? Is this rare or a common occurrence if a drive fails?
I've had two DNS-343s (four-bay ShareCenters) up for > 4 years 24x7. In that time all 8 HDDs have functioned perfectly with 0 failures (knock on wood) -- all 8 HDDs are Standard Volumes. Only in the past year have I started leaving one of my ShareCenters powered down (backup ShareCenter), only turning it on for weekly syncs with my primary storage.
For standard volumes, there are no dependencies between the HDDs in the ShareCenter ("A" and "B" function completely independently). For JBOD, the two HDDs are tethered together, forming one large volume. Not having experienced a JBOD failure myself, I can't speak to the issues that may come up from a failure. I can say that the more complex the configuration, the harder it is to recover if something goes wrong. I've read accounts on this forum where users had no issues recovering from a JBOD failure, and others where they couldn't retrieve their data. It's very possible that these issues are the exception. Users are more likely to post about their failures on these boards rather than their successes, which misrepresents reality.
If your data is backed up, it shouldn't matter either way. The ShareCenter was designed to successfully handle Standard Configurations, RAID-0, RAID-1, and JBOD for storage. And depdending on the option you choose, different degrees of built in recovery are available.
Ok I've bought a gbit hub. So it sounds like if i connect modem to new hub and then everything into hub I'll get gbit speeds between nas and pc which is the important link speed wise. The only disadvantage of this is network speed reduction when lots of users access the nas, is that correct? Internet speed will never be affected, right?
It's always best practice to isolate high bandwidth traffic on a separate segment of your LAN (e.g. hub). This way, users connecting directly to the modem can browse the Internet and perform other activities without any possibility of performance impacts from the NAS activity.
Back to my highway analogy. If you put all the rush hour traffic on the highway, the local roads with a lower speed limit (modem) will be clear for other drivers. This approach will maximize Quality of service for NAS performance and casual users.
Also, down the line I think you will appreciate having a switch for troubleshooting purposes. If at some point in the future, you have networking or throughput issues with your DNS-320L or any networked device, you can remove the router as a possible cause by testing problematic devices on an isolated switch disconnected from the router. This is a common technique. Quite often, the router is the root cause, and it's easier to determine that by testing problematic devices in a silo.
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Topic: 3tb hard drive support? (Read 42945 times)