For those of you using a RAID system for your DVR storage, which RAID do you use? I Googled this and everything came up about video surveillance systems, not DVRs. And most of the articles said RAID 5 was too slow on the writes to keep up with several cameras and that you should use RAID 10. What about the Channels DVR? Is RAID 5 fast enough on the writes to keep up with 6 recodings at the same time? RAID 5 would be cheaper, but I don't want to start off on the wrong foot. Thanks.
I use Raid 5 on my Synology ... I also use Raid 5 on my UBUNTU Server and both are more than fast enough ... I record all Prime time Shows on all Broadcast Channels and watch several and no problem.
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4 drives (1 parity). I can handle about 3+ streams at a time before IO performance bottleneck. The number of recordable streams prior to issues seems to vary on quality of recording. Ie. 1080 @ 60fps vs a blend of SD and HD.
That is using exos hard drives (spinning platters) 7200rpm.
This is on asustor nas connect to ethernet. Only runs channels + plex server + torrent.
If your concerned about bottleneck. What about a more feature rich nas that has dual nvme cache drive. That gives you cheap storage price of hdd. But some performance benefits of ssd.
I record at anytime 8 Streams on my Software Raid 5 on ubuntu with a 5 Drive USB3 Docking station and watch 3 streams and have no problem.
Recording ch8.1 for Law & Order until 9:01PM.
Recording ch12.1 for MasterChef until 9:02PM.
Recording ch2.1 for Station 19 until 9:01PM.
Recording ch32.1 for Walker until 9:01PM.
Recording ch785 for Labor, Lies and Murder (2022) until 10:01PM.
Recording ch2.3 for The Outer Limits until 9:01PM.
Recording ch6.1 for United States of Al until 9:02PM.
Watching Law & Order - Season 21, Episode 8 from Edwin's Fire TV
Watching ch6751 COMET from 10.0.0.214
Watching ch785 LMNPHD from 10.0.0.2: strength=89% quality=100% symbol=100% rate=3.8Mb/sec
I was thinking about getting a RAID for my DVR recordings. If I end up getting a Synology, I could move my Channels Server to that unit. Would that have more or less processing power than my RPi4?
If running Synology you probably want something with a celeron J4125 and a 4 bay nas. I run SHR1 on it (can lose one drive) and have a couple of cameras on it. Works just fine and yes its faster than RPi4.
Model I have is a 920+. If money is a concern you don't have to fill all bays and you can add if you use the Synology SHR for raid. Your bandwidth over a 1 gig connection is 125 MB/s anyways. Also make sure you get some CMR drives. They seem to handle better than SMR. Seagate IronWolf are pretty good.
The question is configuration dependent. Using a RAID HBA you should be fine. Using RAID 5 of a Intel motherboard might not work. If you want an answer post your configuration or planed configuration.
I run RAID 6 on my server with Channels in addition to a few other server things. It works fine. RAID 5 will work fine too.