We are building a mobile rack solution for a client. It has a 2019 Mac Pro with OWC 64 TB Nvme PCI-E card to record 8 streams of video in ProRes. After the shoot they want to dump the footage (as a backup) to a Synology FS2500.*
The unit is not going to be connected to the internet. It will travel to a location.
*FS2500 was picked because
- the client has experience with Synology
- 1U + depth is ok for the rack
Here is the hardware list:
- 2019 Mac Pro (128 GB RAM), ATTO 2x25 GbE NIC, 64 TB OWC Accelsior 8M2
- FS2500 8x7 TB Synology SSD, 8 GB RAM, Synology E25G21-F2
- link aggregated 2x25 GbE (FS.com) DAC, directly connected, no switch
- Raid F1
I want to maximize the transfer speed. We think one show will be ~8 TB, which means 2-2.5h backup time after the show. I couldn’t push the speed above 1-1.2 GB/s. Test files are 2x100 GB files.
(I contacted Synology support, but I would appreciate it if someone has an idea.)
Here are the things that I tried:
- SMB (macOS) - 1.1 GB/s
- FTP (no encryption) - 1 GB/s
- setting min SMB2, logging disabled
- indexing disabled
- no IPv6
- running Synology Memory Test (no issues)
- no bottleneck on each device (10-20% max RAM, CPU usage)
- Setting the NTP
Is this the max speed? Can be better?
I have a video comparing performance of raid type in Synology here:
Based on your video there is not a lot of difference between RAID10, RAID6, or F1.
I hope support can help with the configuration.
you link shows as what? sounds like you’re at 10gb
No, I double-checked and I tried with LAGG 2x25GbE.
Today I talked with Synology Support. They asked me to do an iPerf test. I created 4 Docker containers on Synology and used 4 terminal windows. I was able to achieve 2.5 GB/s (~20 Gbit/s).
I have to do one more test, but according to support, it should do more. Currently with Blackmagic Speed test I get W: 950-1000 MB/s R: 2100 MB/s
To follow up, here are my notes. I had an extensive meeting with Synology support. We tested the network connection, and that wasn’t a bottleneck.
Technically, with eight drives, this is the maximum. ~900-1000 MB/s write.
Today, we received an extra 8 GB stick of RAM. I retested everything, and I got 1100-1200 MB/s. It was able to sustain 15-20% more, which was a surprise for me.
According to Synology Support, if we add more drives, we can achieve higher speeds. There are four bays unpopulated.
- 2x25 GbE LAGG (direct connection)
- RAID F1 (8x 7 TB SSD, 41 TB usable)
- 16 GB RAM
- Indexing, encryption off