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large-storage-custom-nas - index.md

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still not failing, close to where it was before.
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engineershamrock
2024-03-07 00:40:39 +00:00
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@@ -203,3 +203,25 @@ Even better the RES240 cards do not actually need to plug into the motherboard,
- This is an amazing win.
- I started the build out as follows
{{< image src="images/IMG_2870.jpg" width="150x" class="is-pulled-right" height="200x" title="">}}
{{< image src="images/IMG_2800(1).jpg" width="150x" class="is-pulled-right" height="200x" title="">}}
{{< image src="images/IMG_2804.jpg" width="150x" class="is-pulled-right" height="200x" title="">}}
Add some drive location testing
{{< image src="images/IMG_2883.jpg" width="150x" class="is-pulled-right" height="200x" title="">}}
It is brilliant what could go wrong!
As it turns out ... there is always something!
When I added an additional 14, the SAS controller only showed 24, but 14 + 14 = 28
It turns out SAS controller cards do not have an unlimited number ports, they can only service 24 drives per card! Some mention 16 , some 32, all the ones I bought that touted different numbers, the upper limit was always 24.
The best we can do with 3 controllers is then 72 drives ( 1 RES240 card + other physical port to 4 drives ).
Close but not yet 120 drives - ARG!!!!!