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

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(@steve223)
Posts: 185
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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

 

OWC Thunderbay

 
Posted : 09/04/2021 4:02 am
(@softraid-support)
Posts: 9200
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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.

 
Posted : 09/04/2021 1:19 pm
(@steve223)
Posts: 185
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@softraid-support same drives as I moved the drives from the Thunderbay over in to new Promise Pegasus

This post was modified 5 years ago by steve223
 
Posted : 09/04/2021 4:16 pm
(@steve223)
Posts: 185
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Topic starter
 

Promise Raid R4

 

OWC Thunderbay

 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.

 
Posted : 09/04/2021 4:46 pm
(@softraid-support)
Posts: 9200
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.

 
Posted : 10/04/2021 9:38 am
(@steve223)
Posts: 185
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Topic starter
 

@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. 

 
Posted : 10/04/2021 3:57 pm
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