In Plural we made this crazy implementation.
Database and file store: 1 x HP xw8400 w/ 8 GBytes RAM connected to a RAID 6 array (openSuse 11.4).
Recorder 1 : HP Z620 w/ 12 GBytes RAM, 1 x 2 TB HDD to the record process, 1 x DVS Atomix LT (openSuse 12.1)
Recorder 2 : HP xw8400 w/ 8 GBytes RAM, 4 x 300 GB HDD configured in RAID 5 using the linux MD, 1 x BMD Decklink Duo (openSuse 11.4)
Controller : Dell E6400 laptop running the controller application in the recorder 1 using ssh (openSuse 11.4).
Recorder 1 is encoding IMX50 op-Atom + H.264 512k for browsing and director review.
Recorder 2 in encoding IMX50 op-Atom
The two recorders are configured to use SYS time code and we synchronize them with NTP (Recorder 1 act as a time server for Recorder 2). We do that because we can't insert LTC in the SDI channel of the Recorder 2 (BMD board).
The system works well but we always have 1 or 2 frames difference between the 2 recorders.
We are using the system to record 1 PGM + 3 cameras in a interview program ( http://www.tvi.iol.pt/programa/4677 ) and 4 independent cameras in a culinary program ( http://www.tvi.iol.pt/programa/4680 ) and a music clips program ( http://www.tvi.iol.pt/videos/13717429 ).
Rui Loureiro - Plural Entertainment Portugal
Interesting to hear about your system. With DVS card on one system and BMD on the other and using SYS timecode, I think some frame differences are inevitable.
Of course, but we don't want resolve this frame difference problem. We gonna get a new DVS board and implement 1 pc solution. Do you think that we can successfully record 4 HD streams with the HP Z620 workstation, lets say 4 x VC3 120 Mbps? The machine have 2 x Intel(R) Xeon(R) CPU E5-2603 0 @ 1.80GHz with a total of 8 cores and 12 GBytes of memory. We are looking to this Infortrend RAID encloser to record the video, configured as RAID 0 with SAS 15000 rpms HDDs. http://www.infortrend.com/global/products/models/ESDS%20S04S-G2240