this post was submitted on 14 Aug 2024
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It's A Digital Disease!

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The original post: /r/datahoarder by /u/grathontolarsdatarod on 2024-08-14 01:25:07.

I've made a few ad-hoc comments about Sabrent's 5-bay enclosures and recommending them.

That hasn't guite changed but I wanted to relate some observations to you guys.

I made comment about my troubles of making a 3-disk raid and a 2-disk raid within the 5-bay enclosure and it not working. Using mdadm.

I ended up making a 5-disk raid and that did work.

However, I never got performance above USB 2-ish speeds on it.

Today, messing around with it... I noticed that my device info (Debian on a beelink) puts 4 of those disks in one tree and one disk in another - in order of activitation, even) if I use all 5 disks.

I made a 4-disk array and the speed is at about 200mib/s rather than the 80mib/s for the 5-disk array.

So... This is where my knowledge breaks down...

Either Sabrent doe something funny with USB 3.1 when 5 disks are connected: doubtful.

BeeLink does something funny with ubs 3.1 passed 4 devices on the same connection: maybe

USB 3.1 is limited to 4 devices on the same connection: don't know.

Anyways. If you're having read/write rates lower than expected.... Might have something to do with this thingy I've observed.

Maybe someone else can come fill the gaps of knowledge I have.

Cheers everyone!

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