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Why is Thunderbay 4 with SoftRaid So much slower than a Promise Pegasus R4?

(@steve223)
Estimable Member Customer

So I have a Thunderbay 4 drive with Thunderbolt 3 and also just purchased a Pegasus3 R4. Both are connected via Thunderbolt 3 and the Promise is formated as raid 5.

The Promise is over double the speed writing and substantially faster reading

Here is the speed comparison

Promis Pegasus

PromisPegasusSpeedTest

 

OWC Thunderbay

DiskSpeedTest OWC
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Topic starter Posted : 09/04/2021 4:02 am
Topic Tags
(@softraid-support)
Member Admin

What are the drives in each?

Use AJA System test (free in app store), it is a more reliable and consistent benchmark test.

My recommended settings to test disks, not CPU are:

5K video resolution (any)

RGBA codec

16 GB or 64GB file size.

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Posted : 09/04/2021 1:19 pm
(@steve223)
Estimable Member Customer

@softraid-support same drives as I moved the drives from the Thunderbay over in to new Promise Pegasus

This post was modified 1 year ago by steve223
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Topic starter Posted : 09/04/2021 4:16 pm
(@steve223)
Estimable Member Customer

Promise Raid R4

Screen Shot 2021 04 10 at 7.41.39 am

 

OWC Thunderbay

Screen Shot 2021 04 10 at 7.44.18 am

 Substantially slower given they are both Thunderbolt 3

 

This OWC does not have the same HD though it's my Secon OWC with WD Red Drives

but results are pretty similar to my previous test where I swapped the same drives over.

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Topic starter Posted : 09/04/2021 4:46 pm
(@softraid-support)
Member Admin

The test you need to do, which I did, was set each individual disk to be JBOD. That is what I did in my testing. I won't have access to the Promise box to repeat this testing immediately, but will get to it when I can.

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Posted : 10/04/2021 9:38 am
(@steve223)
Estimable Member Customer

@softraid-support not really I run my units as Raid 5 not JBOD so that’s the speed i’m interested in. That’s ok a just on top of all the SoftRaid issues and Kernel panics I experienced. So unfortunately I will have to say goodby to OWC storage solutions. 

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Topic starter Posted : 10/04/2021 3:57 pm
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