Main purpose is to backup 20 end user PCs. My Western Digital (WD) device broke and I needed something fast. Shipped Immediately, Purchased 5 x WD Red Pro 6TB NAS Internal Hard Drives - 7200 RPM Class (a spare, trust me you need a spare); I got it up and running in minutes and fully up and running in a couple of hours. Easy to install, intuitive user interface with good online help if needed. Using the included Active Backup for Business application that implements data deduplication, which saves huge amounts of disk space. This is a great feature. I don't know why it isn't highlighted in the description. I love Synology!
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