I don't know about the NAS part but weird noises isn't always a for sure indicator. My old Mac tower has three hard drives in it and they have made all kinds of weird noises but they keep on going. Depending on your enclosure, it could just be the fan. For internal drives you can check the SMART (Self-Monitoring Analysis and Reporting Technology) status of your drive to find out if it thinks it's about to die either in terminal:

diskutil info disk0 | grep SMART

which should say "Verified". You can get that same info from Disk Utility sometimes after selecting a drive (not the volume within a drive) and then navigate to the bottom of the window where it has all the info like name and capacity. I say sometimes because sometimes it's there and sometimes not. The terminal command always seems to work.

That said, external drives don't seem to work with this but there are tools you can install to do this such as Smart Monitoring Tools although not all enclosures support this:

http://sourceforge.net/projects/smartmontools/

More info about SMART is here:

http://en.wikipedia.org/wiki/S.M.A.R.T.

Checking on this has saved my bacon more than once.

CB

On 4/3/15 6:05 AM, jeffrey greene wrote:
Hi, Ok first sorry for the long post! I’ve had bad luck with external hard 
drives. My 3.5 year old lacie 4tb thunderbolt is making strange noises. 
Figures, its 6 months out of warranty. So, I was considering getting a NAS 
drive. So here are my questions:
1 which brands do you guys recommend?
2 which brand is easiest to setup using VO on the mac?
3 some NAS drives advertize personal cloud functions. Is this important?
4 What capacity do you think I should get? I heard something a long time ago 
that for example an 8tb nas doesn’t have the full 8tb available.
Thanks, Jeff


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