What kind of back-up solution are you using?
Which RAID level if any?
What brand/size/model hard drives are you using and how many?
Which OS do you use? (Windows Home Server, FreeNAS, ZFS, etc.)
What software do you use to keep your client(s) synced with the NAS?
Thanks!
Currently, I'm Running the HP MediaSmart ex470 Windows Home server. It is my network storage, remote access, backup solution.
It doesn't use RAID, but is a prebuilt WHS solution. I use the duplication feature on my Photo's Music and Documents.
It currently has four 2TB drives (Seagate and WD) so an 8TB drive pool total.
It's running WHS v1.
If by synced, you mean back up my local PC's, I use the WHS client software to back up every PC nightly. It has saved me, days of effort on re-installing after HD failures and upgrades over the past few years.
I also use Synctoy2. I have it set as a background task that runs on my primary machine every few days to copy any new media and documents to my WHS.
I also use the Asus Web Storage service on the WHS box. It backs up my Documents and Photos to the cloud as an off-site back up.
I will be, eventually, switching to a new set up. I have built a server with 12GB of RAM and the potential for 14TB + storage in RAID 5. It's running SBS 2011 with a WHS VM under Hyper-V. The remote connectivity and the mail handling capability of SBS 2011 is just plain awesome, and being able to keep the Back up features of WHS (or similar) under a VM on the same machine is extremely appealing for me.
Admittedly, the new set up will require far more maintenance than the current WHS does. WHS is really designed as a set it up and forget about it solution until you need it, which it does extremely well, while the SBS 2011 is a much more hands on product.
Edit: I just want to add, IMHO, if the goal is to have an extremely nice back up solution for your desktop PC's to a network device, WHS is an amazing product. Being able to restore individual files from any night over the past 3 years and being able to do a "bare metal" restore to my PC with ease is such a great thing, I can't see myself ever running without it.