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Old 2016-10-05, 09:50   #1
fivemack
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Default Is this an item of commerce?

I'm looking for an eight-port 10GbE switch with SFP+ connectors, because buying a pile of

http://www.bargainhardware.co.uk/che...gure-to-order/

and connecting them with gigabit-over-copper seems a bit silly.

A source of SFP+ cables which don't cost a hundred pounds each would also be quite useful - at the moment it looks as if it's cheaper to get SFP+-form-factor SR transceivers and SC-at-each-end optic fibres, and I can't really believe that a system involving two sets of high-tech lasers ought to be cheaper than two metres of even fairly fancy copper wire.
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Old 2016-10-05, 13:35   #2
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Well, 10GbE switches aren't exactly cheap, but it looks like you can get them and the cables for (just) less than the cost of the 8 computers connected to it:

Here is a 12-port version:
https://www.cdw.com/shop/products/D-...c/3733028.aspx

And some direct attach copper cables:
http://www.cablesondemand.com/catego...CT_ATTACH).htm

I didn't do much shopping so its probable they could come slightly cheaper somewhere else.
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Old 2016-10-05, 13:39   #3
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http://www.bargainhardware.co.uk/cis...c3750e-24td-s/

and

http://www.bargainhardware.co.uk/int...wo-sfp-cables/

and

http://www.bargainhardware.co.uk/sfp...be-dell-j564n/
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Old 2016-10-05, 13:40   #4
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Monoprice has cables for $25: http://www.monoprice.com/product?p_id=12051
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Old 2016-10-05, 14:50   #5
fivemack
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Quote:
Originally Posted by pinhodecarlos View Post
That's a 1000BaseT switch, not 10Gbit.

The machines already have dual 10Gbit SFP+ ethernet on the motherboard

But that one's useful.

I, err, may have ordered a 42U rack for my shed and four of the bargainhardware machines to put in it. £20 per 2GHz Sandy Bridge core with 4GB RAM is not to be sniffed at; I wasn't sad paying £90 per 1.9GHz Opteron core with 1365MB RAM five years ago.

Last fiddled with by fivemack on 2016-10-05 at 14:50
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Old 2016-10-05, 15:29   #6
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Quote:
Originally Posted by fivemack View Post
I, err, may have ordered a 42U rack for my shed and four of the bargainhardware machines to put in it. £20 per 2GHz Sandy Bridge core with 4GB RAM is not to be sniffed at; I wasn't sad paying £90 per 1.9GHz Opteron core with 1365MB RAM five years ago.


I love how you can just go and do this kind of stuff. In my house there are several layers of committee and management review boards (all of which are solely staffed and bottlenecked by the same individual), each with a different approval process that changes each time I encounter it, that must be traversed before any new computer equipment may be purchased.
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Old 2016-10-05, 15:49   #7
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Quote:
Originally Posted by bsquared View Post


I love how you can just go and do this kind of stuff. In my house there are several layers of committee and management review boards (all of which are solely staffed and bottlenecked by the same individual), each with a different approval process that changes each time I encounter it, that must be traversed before any new computer equipment may be purchased.
Down to Gehenna or up to the Throne,
He travels the fastest who travels alone.


-- Rudyard Kipling, The Winners
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Old 2016-10-07, 15:24   #8
pinhodecarlos
 
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Quote:
Originally Posted by fivemack View Post
I'm looking for an eight-port 10GbE switch with SFP+ connectors, because buying a pile of

http://www.bargainhardware.co.uk/che...gure-to-order/

and connecting them with gigabit-over-copper seems a bit silly.

A source of SFP+ cables which don't cost a hundred pounds each would also be quite useful - at the moment it looks as if it's cheaper to get SFP+-form-factor SR transceivers and SC-at-each-end optic fibres, and I can't really believe that a system involving two sets of high-tech lasers ought to be cheaper than two metres of even fairly fancy copper wire.
Tom, have you bought them? Really looking forward to hearing from you about this rack servers.
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Old 2016-10-07, 23:15   #9
fivemack
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Quote:
Originally Posted by pinhodecarlos View Post
Tom, have you bought them? Really looking forward to hearing from you about this rack servers.
They should be arriving on Tuesday. Just put in the auxiliary orders for five kettle leads, the weird mains-plug-to-IEC60309 converter (usually used for plugging in motor-homes), gigabit switch, six patch cables in different colours, C14-to-mains-socket converter to plug the gigabit switch into ... debating slightly what to do for disc, probably a four-pack of 120GB SSDs is the answer since I'm likely to want to do NFS filtering, which will be unbearably slow from USB2 stick.
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Old 2016-10-11, 10:45   #10
fivemack
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Good news! The servers have arrived!

Further good news! I will never run out of Ethernet patch cables or C13-to-C14 mains leads again, since the movers did not remove the 84 patch cables and 19 mains leads velcroed to the rack before delivery!

Indifferent news! I now have a much more visceral understanding of palletised delivery.

More indifferent news! The rack advertised as 'weighs 20kg' on the Web site actually weighs 60kg. The very best data-centre commissioning engineers probably arrange that at no stage in the commissioning process does the rack need to be manhandled across long damp grass.

Decidedly unfortunate news! The building I intend to install the rack in has ceiling-rafters which descend to less than 42U from the floor.
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Old 2016-10-11, 11:01   #11
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Post pictures please.
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