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Need recommendation on low-cost NAS

I want to find a low-cost NAS that can take the place of an external USB drive being used for Acronis backup images.  I'm told that a NAS can be set up on a LAN as a network share, but never having worked with one I don't know how that will be done.  I read the documentation for a Synology DS120j, but ALL it said at the end of the setup guide was that the "NAS is now online and detectable from a network computer".  But I'm thinking what I really want is a way to configure the NAS with a share name on the LAN--just as you can do with a share on a PC.  

Is there a good low-cost NAS that will let me do such a configuration--or am on "the wrong track" here?  TIA
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Bill Prew

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I would like to configure two of them with the same share name, but only have one at a time connected to the LAN.  If I do that with two 120j, and make sure to only have one at a time connected, I'm hoping that the swapping would be transparent to the PCs on the LAN that are creating backup images  at night, i.e. the Acronis software running on the networked PCs at night would not know and would not care which of the two 120j was connected at any point in time, because all Acronis cares about is the share name--and login credentials if applicable.

Can I make it work that way?
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Bill Prew

Why would you want to be switching between two NAS devices, making them look the same?


»bp
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"Why would you want to be switching between two NAS devices, making them look the same?"

I want to switch between NAS devices each week in order to make one set of backup images inaccessible to hackers at all times--after seeing a colleague have his Macrium images on a LAN get corrupted by ransomware.  I figure if it can happen to Macrium images, it can happen to the Acronis images that many of my customers make.  If one week of images is sitting over on a corner desk, I figure that is going to be a cheap and easy way to keep them safe from hackers.
Interesting...


»bp
I use WD MyCloud NAS drives for backups. Very easy to use and can cope with backups over a 1GB link.
Please make sure your network is properly designed (all clients Gigabit, as well as all network switches etc).
If possible, try to calculate every nightly backup, from how many clients combined to how many TB of data.
Going cheap sometimes means, not all backups will be finished in the morning (either due to limited networking bandwidth, or limited write speeds of the NAS).
If you have 10 or more PC's doing a full image backup, I'd probably go for a 2 or 4 bay RAID 0 (since you have a second device, you could forego the extra mirroring option in the RAID).