JohnD76 wrote:It seems odd to use SATA II when you are using Infiniband 12gb/s and can get 10G NIC's.
I can agree it does seem odd to not just use sata3. We can only assume it was a cost saving decision, though I don't imagine it would of added much. You'd have to agree though, that there would of been no real performance benefit offered by sata3 based of performance numbers reported.
Besides, especially when the performance gain is doubtful, personally I would prefer a true and tested old SATA 2 controller over a faster but less known SATA 3 one (possible misbehaviors at such low level are a heck of a problem to debug)
I am not sure that this is the right place to post this as I have only been a Synology user since Thursday. Rather that buy another two DroboPro-FS units I decided to buy an RS2211 and an RX1211. I added 10 3TG discs to the RS2211 and 2 3TB discs to the RX1211. I started copying my movies from my primary Drobo (both Drobos also have 8 3TB drives each). I saw a transfer rate of 44MB/s. As the Drobos are mirrors I started another copy to the Syn9ology from the second Drobo. Now I was writing at 90MB/s. Adding a third NAS allowed writes in excess of 105MB/s. I could not be happier. I copies around 18TB of media then tried to watch a Blu-Ray. The movie plays perfectly except every few minutes the motion pauses, then fast forwards with no sound then resumes normal play.
I can copy the same ISO image to my desktop at way over 100MB/s. I tried playing the ISO from the DroboPro-FS copy and it plays with no problems. The performance seems to be six times faster than the Drobo units yet I cannot play a movie smoothly.
I have both NICs connected to the same 16 port GB Netgear switch as the Drobos, bonded but not aggregated. My media player is a Dune HD Max. All Blu-ray content has this problem.
I just came up with two questions (haven't seen a discussion about these two points yet).
1. I can't find an eSata port in the DS2411+ specs on the various sites. Did they really drop the eSata support (obviously because of the 3x4=12 ports) on the DS2411+? While not supporting USB3.0 at the same time, this is really a set back in comparison to older (and cheaper) products. => backup time to external discs x3 or x4
2. Will it be possible to expand the RAM size (to 3GB) as in the DS1511+? Or did they drop this support to point out more differences between DS2411+ and DS3611+?
there is no e-sata port on any of the specs sheets or graphics i have seen - the esata port on the DS1511+ was mainly intended for plugging in the slave unit, so on the ds2411+ the infiband port replaces this.
at its heart it is still a standard pc built from standard bits, the motherboard in my RS2411+ looks IDENTICAL to the one in the ds1511+ (and one would assume will be very similar to the ds2411+) so i am fairly sure that you would be able to upgrade the ram