![]() ![]() Seems like the performance is nowhere near where it should be on any of them and weird that going from 4 drives to 8 has no impact on the stripe and a big write hit on the RAID 5. Results (using the AJA settings you recommended): I've also had the wifi adapter disabled since before I received the Thunderbays. To rule out external factors I also tried all of the following and repeated the 8 stripe test but none had an impact on results: Thunderbays both connected to first Thunderbolt bus on Mac mini, both connected to second bus, Thunderbays daisy chained to each other, all other USB devices disconnected, HDMI cable disconnected. Did some of them with volumes located on one Thunderbay and then again with the volume split across both enclosures. Repeated each a few times just to make sure there were no anomalous results. I guess I shouldn't have been so hasty to try and get it setup. Hopefully we can get to the bottom of it as it seems to be missing the speeds you mentioned by a long way right broke my heart a little to delete the volume after spending all yesterday transferring stuff over to it! But better to get this right and figured out now. I don't know if it helps but I took a fresh SoftRAID report right after performing the AJA test in the screenshot. ![]() Just the 7 drives at the moment - kept the 8th back after you said about the RAID 5 to RAID 6 upgrade being only for adding a disk.ĭo you have any ideas why it could be so slow or anything I could check? I've tried to follow your instructions on different things like extensions from other forum posts so think I've checked everything I can think of. They aren't showing any problems in System Report on the two ports. ![]() I've got the two Thunderbay 4 bays connected to different Thunderbolt buses on the Mac mini too as I thought that was supposed to give it a boost. ![]() No obvious errors or anything flagging up in SoftRAID. I'd just assumed the read speed on the old USB 3.0 enclosure drives was acting as a bottleneck but obviously that's not the case on the test. Been copying files over from the old drives most of the day and at one point I had to reboot because it was grinding to a halt speed wise on transfers and improved some after the reboot. That was the best result I got and I had to reboot to get it to improve to that. I've attached a support file from SoftRAID in case that is useful or shows something I'm not aware of. So I think I've done everything I'm supposed to. I've done the Reduced Security for SecureBoot and the SoftRAID driver is up to date and loading. Write cache is enabled in the SoftRAID monitor settings. Are these speeds normal and is the variance in the read speeds normal? Maybe it's just unrealistic expectations but I thought both readings would be consistently higher than that with the set up. Write speed varies from 100MB/s to 250MB/s and read speeds vary between 250MB/s and 550MB/s mostly although this one occasionally spikes to either 800MB/s or a couple of times it's exceeded 1000MB/s for maybe 30 seconds before dropping back to the lower range. I've been using the Black Magic and AJA disk speed test utilities I've seen mentioned and the speeds seem a little on the low side albeit there's variance on the reads. Initialised and formatted as HFS+ journaled using SoftRAID. 7x8TB HC320 Ultrastar drives (saving the 8th as previously discussed to upgrade RAID 5 to RAID 6) in two Thunderbay 4 enclosures each connected to a different Thunderbolt 3 bus on a 2018 Mac Mini. I finally got all the components and the disks passed certification last night so I've now created my first RAID 5 volume using SoftRAID. ![]()
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