ServeTheHome 2013 Architecture Discussion

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Patrick

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96GB RAM in the original machine. Just purchased 24x 8GB for 192GB of RAM for the box. Will allow for either 48GB/ node or 72GB/ node depending on the power consumption.
 

Patrick

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When you get to the power part of your design, take a look at these rather inexpensive ethernet-controlled power strips:

http://www.digital-loggers.com/epcr3.html

http://www.digital-loggers.com/220.html

http://www.digital-loggers.com/lpc.html

After hearing good things about them, I ordered the 18 outlet version to make it easier to shut down my DEV environment for the evening - via iRule and an iPad.
Those do not show power consumed? I do like the auto-ping though.
 

dba

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The web UI has a readout that shows real-time amp draw (with 0.1A resolution) and total KWH consumed per input circuit - not per outlet though. I can't find an easy way to reset the KWH readout, so it's basically a running total.

As you said, the colo provider probably includes equivalent functionality. For those who are looking for something for their own labs, these are very reasonably priced.

Those do not show power consumed? I do like the auto-ping though.
 

Patrick

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So I have been "exploring" the idea of doing Dacentec + adding power to the rack. The idea there would be more power and bandwidth + spend more on a CDN.
 

Patrick

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Great point... 2x for C6100, 2x for switches, 2x for the firewalls... Makes sense I guess. Plus local 408 area code so bay area.
 

Patrick

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Thanks dba! Will keep that in mind.

Update: Ordered 4x Intel 320 SSD 160GB today. For those wondering, will likely OP to 120gigs usable, and these are the lowest cost drives with capacitors out there.

C6100 arrives tomorrow along with 24x 8GB DDR3 DIMMs to augment (or replace) the 24x 4GB already in there.
 

Patrick

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Nice! The L5520's can take maximum of 8GB DDR3. The Xeon 5600 IIRC was the first generation with 16GB support. :-/
 

cactus

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Thanks dba! Will keep that in mind.

Update: Ordered 4x Intel 320 SSD 160GB today. For those wondering, will likely OP to 120gigs usable, and these are the lowest cost drives with capacitors out there.

C6100 arrives tomorrow along with 24x 8GB DDR3 DIMMs to augment (or replace) the 24x 4GB already in there.
320s new or ebay? New prices are ridiculousness, but as you said, cheapest SSDs with supercaps. I wish I would have bought a few more then they were on sale/discontinued two Thanksgivings back.
 

Patrick

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New in box. :) just 100/ ea. Not too bad. Will likely op them to make 120gb usable and much higher endurance. Another benefit of older node NAND.
 

Patrick

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Why are super caps such a big deal?
A lot of the newer drives save data to RAM as a buffer prior to writing. That became a very common way to improve SSD performance, especially at smaller file sizes. Scaling it up (kinda) it is like using a RAID card's onboard RAM (on-SSD RAM) for write caching prior to writing to disks (NAND packages.) Supercaps are like having a capacitor backed write cache. No supercaps are like running write cache without having a flash backed write cache/ BBWC.

A big goal of this is to be able to survive something going wrong. The Intel 320's with OP are actually decently fast devices. Sometimes EBS IOPS can be not so good (I linked a Scaylr blog in today's article.)
 

Patrick

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The beast has arrived! Setup/ testing begins tomorrow.