Summary: I purchased this almost four years ago and just had my first issue with it - the power supply failed. When I used ReadyNAS tech support, they issued me an RMA with no questions and shipped me a new power supply under warranty. Very happy with the product and the customer service.
Pros: been running 4 Seagate Barracuda ST31000524AS 1TB 7200 RPM 32MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive for 3 years now with no issues. One of the nice features is additional plugins that can be installed like ssh access
Cons: With the raid set it does run slow reading and writing, but its worth it to have a backup
Summary: This has been a very reliable NAS - I had a power supply issue at 2 yrs which was replaced free and the support from Netgear was very good, that was 3 yrs ago. I have upgraded memory to 1Gb and put in 4-2Tb drives on RAID 10. This is my Video Drive.
Summary: This unit is installed in a medium network as a storage and backup unit, and it works as it should. This is the 2nd one I have installed on our network. The other is the NAS NV+ v1. Amazon had a great deal on these with the rebate, so I bought one for myself.
Summary: Gigabyte Raid, SATA II, I use 4 1.5 TB drives. I use the default RAID config, so it adds up to 3 TB of data that is also mirrored. You do not have to put in 4 drives, you can start with 2. S.M.A.R.T. monitoring. Powerup is typically slow for NAS boxes but this one isn't so bad.
Summary: We own several of these units and the new V2 units as well, this is MUCH better than the V2, other than the lack of 3TB drive support, this unit is MUCH more reliable, mature, and easy to configure.
Pros: Awesome unit, nothing bad to say about it, pretty much the ideal NAS for anything. Expandability, drive replacement, everything is a breeze (and I work with everything from desktop USB drives to enterprise class SAN systems as well). This is MUCH better than the readynas nv+ V2
Cons: DOES NOT SUPPORT DRIVES > 2TB EACH! Probably will not ever either.
Summary: Prior to purchasing this unit, I read some of the Amazon reviews like I normally do for these type of products. I decided that some of the reviewers probably don't have a very good understanding of these products and that was their problem.