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SoftRaid 1+0 Volume Read Performance

(@dansimmonsvt)
New Member Customer

Hi,

I just configured a SoftRaid 1+0 volume. It uses two ThunderBay 4 chassis loaded with 4x4TB disks. The primary disks for the mirror are in the first ThunderBay, so I have chassis fault tolerance. Each ThunderBay is connected directly (no daisy chaining) to a unique Thunderbolt controller. In the 2018 Mac Mini there are four USB-C/Thunderbolt ports served by two Thunderbolt controller chips).

I tested read/write performance using BlackMagic, and get less than 500mb/s read, and ~700mb/s write. Read performance is about half what I expected, yet write is as expected.

Sure would appreciate any thoughts or debug suggestions.

Thanks,

Dan in VT

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Topic starter Posted : 30/01/2020 10:08 am
(@softraid-support)
Member Admin

Try using AJA Performance Test. More reliable.
Settings:
5K video
RGBA
64GB file size.
I just did this test with 10TB drives in RAID 10+0, spread as you have on two enclosures.

850MB/s reads/writes on using 2 Apple 3/2 adapters on two buses.
650 writes /800 reads when daisy chaining the two enclosures.

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Posted : 30/01/2020 3:01 pm
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