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Old 12-04-14, 07:17 PM
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alpenwasser alpenwasser is offline
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Join Date: Feb 2013
Location: Switzerland
Posts: 1,856
Storage Topology & Cabling

Quote:
Originally Posted by lAnimal View Post
I see what you did there

lol, and I didn't even do that one on purpose.


Storage Topology & Cabling


Storage Topology


In case you can't read the text, the full res version should
be more easily readable.

(click image for full res)



The idea behind the storage topology is based on the concept
Any one of the three LSI controllers can fail and I still
have all my data available.

You'll see below that I haven't yet gotten around to
installing the Velociraptor.

I use coloured zip ties to mark the cables that go to the
different controllers.

BLUE = controller 0
YELLOW = controller 1
GREEN = controller 2


Tidiness

There isn't really any space to hide the cables, so this was
rather tricky and required three attempts until I was
satisfied with the result. In the end I hid the extra cable
behind the triple fan unit, good thing they're 38 mm fans,
which makes the space behind them just about large enough to
fit the extra cable bits.

The power cables for the disks are two cables that came with
the PSU and onto which I just put a lot more connectors
while taking off the stock connectors because those were
neither placed in the correct locations nor facing in the
right direction.


Looks harmless, right? Yeah...

(click image for full res)



And the disks:
(click image for full res)



OK then, first try:
(click image for full res)


I soon realized that this wasn't going to work. The problem
was that I had the disks arranged in the same way as the
will be set up in the storage pool layout, so the disks
which go into the same storage pool were also mounted below
each other. Sounds nice in theory, but if you want to
have disk from each pool distributed among the different
controllers, you'll get quite the cable mess.

(click image for full res)


(click image for full res)



Second Try

Next try, this time I arranged the disks to that the cables
to the controllers could be better laid out. Since I wanted
to set up all the cables for all the disk slots, even ones
that will stay empty for now, I had to shuffle the disks
around when laying out the cables.

(click image for full res)


(click image for full res)


(click image for full res)



Better. But I still wasn't quite happy, mainly because...

(click image for full res)


(click image for full res)


(click image for full res)



... of this:

(click image for full res)



Third Try


This time I made sure the cables stayed tidy on both ends
while hiding the mess (which cannot be avoided since all
cables are the same length but lead to different end points,
obviously) behind the triple fan unit.

(click image for full res)



The loop of extra cable length for the top cable loom:

(click image for full res)



And the cable loom for controller 0, from the disk side...

(click image for full res)



and the M/B side. Much better IMHO.

(click image for full res)



The bottom controller had a bit more extra cable length to hide, so
that part is a bit messier.

(click image for full res)


And the middle one:
(click image for full res)



Tada! While not perfect (I'd need longer cables for that to
make cleaner runs, but I'm not buying more cables just for
the sake of that for a build that has a closed side panel),
with this iteration of my cabling I'm now rather happy:

(click image for full res)


(click image for full res)


(click image for full res)



And the other side. Much better than before methinks.

(click image for full res)


(click image for full res)



The SATA cable for the system SSD:

(click image for full res)



And the controller LEDs when there's some activity:

(click image for full res)



Now if you'll excuse me, there's a dinner waiting to be
cooked.


Cheers,
-aw
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