Ssd recorder blackmagic pro#

SSDs are made first and foremost for being written to in computers where a heavy workload can be handled differently. I have also explained why this can happen. Travis, I've linked you above a test from Anandtech showing that this drive can bog down under heavy stress to be able to write at 607 MB/s only. Why would it be crashing if it isn't even close to the limit. You should be hearing from support with some requests Travis to help us problem solve this. or there are also external USB-C RAID enclosures that will allow you to do a striped RAID to two SSD's that will saturate your USB-C data link at up around 950MB/s. The fact that you are dropping frames repeatedly at 8K 2.4:1 Blackmagic RAW 8:1 at 120fps, which is around 635MB/s seems odd onto that disk so it might be an issue with the disk or something else.Īs John rightly pointed out you can record RAW to 2 CFast cards internally and sustain around 900MB/s with some of the faster CFast cards. Robert is correct in stating that the format that these U.2 drives have been certified for is 12K DCI Blackmagic RAW 8:1 at up to 50 fps which is up around 753MB/s.ġ2K DCI Blackmagic RAW 8:1 at up to 60 fps is north of 900MB/s and while most of the U.2 drives on our certified list will sustain this for a period of time they will eventually drop a frame or multiple frames which is why we certified for the format we did. I believe you are in contact with support now so if you could send them in formation that they request regarding your U.2 recordings that would be helpful.

Ssd recorder blackmagic pro#

I wouldn't recommend shooting on them with URSA Mini Pro 12K.

The T5 isn't on the list because it failed our certification tests repeatedly. It worked for us and a handful of productions whilst we waited for the elusive new SSD recorder. Travis Hodgkinson wrote:Not sure why the Samsung T5 isn't on the list. The next stage is to buy another SSD to record on, even more money ! Especially since that SSD drive I brought is on the SSD recommended list for the 12k. It's been a drama, I ending up renting and using a Red for the shoot I had booked, since i couldn't depend on this one at this stage. So not using that drive to edit and then using back on the camera. No change still dropping frames in 8kįor the tests, I was recording then moving the files to other SSD for editing. I did try 3 c-usb cables to see if it was the cable. I was still having issued with dropped frames. Hi all sorry for the late reply, been a crazy last week. Those data rates seem well below maximum bandwidth so maybe the drive / cable could be the problem?Įspecially cables have been a weak link - the can get bent too much during production and suddenly start to fail (e.g. I am just asking to rule out if it is the drive workflow instead of a firmware bug. What is your workflow? Do just move/copy the files from the SSD and file delete them later? (do not forget to export camera settings and custom LUTs first, because up- and downgrades reset everything) Robert Niessner wrote:Lee, you know that you can downgrade the firmware? So I'd suggest to do a test with the camera connected to the power supply and then with your batteries attached. Because I remember someone reporting a problem with the older BMD SSD recorder when the battery was under heavy load and couldn't supply enough power. One thing you should also test: power supply. It shows also how you can use their command line DC Toolkit to increase the over-provisioning. That means to change the formatting so that a greater part of the cells are reserved for spare (and less user space). What helps is to use a higher over-provisioning for the drive. Steady-state means the SSD flash cells have been written to before and now have to perform garbage collection - slowing down the write performance. In steady-state 128kB sequential write performance the Samsung 983 peaks at 607 MB/s. Once all the spare area granted by the high overprovisioning ratios has been used up, the drive has to perform garbage collection while simultaneously continuing to service new write requests, and all while maintaining consistent performance. The hardest task for most enterprise SSDs is to cope with an unending stream of writes.