That's what I went through a year ago!subb'ed....
I suspect after there is 1 workstation capable of this then the next customer request is 2 workstations...
well, maybe I'm looking at the wrong prices or at the wrong parts required... ;-)I'm +1 in for Patrick's and @Blinky 42 idea. Swapping long external SAS for IB/ 40GigE is not that much more expensive.
What is the transceiver for ? Is it for actually enabling 40G or is it only needed for long distance 40G connections ?40Gb is not too bad price wise, $620 for cards & modules + ~$125 for 20M of OM4 8 strand MPT for 40Gb point-to-point
The QSFP+ modules are available new for $130
Mellanox MC2210411-SR4 Compatible 40GBASE-SR4 QSFP+ Transceiver -Fiberstore and even cheaper on ebay
$180 for single port Connect-X3
IBM Mellanox ConnectX-3 VPI QSFP FDR14/40Gbe HCA 00W0039 - 00W0037 MCX353A-FCBT
or $250 on for a dual port
Mellanox MCX354A-FCBT FDR 56.6Gb/s INFINIBAND + 40GbE HCA CARD CONNECTX-3 CX354A
The transceivers have the lasers & recievers in them to work with the fiber cables. There are different types of transceivers to support different distances and fiber types.What is the transceiver for ? Is it for actually enabling 40G or is it only needed for long distance 40G connections ?
In other words: for a short connection of 10m or less, do all end point devices need a transceiver + the card ?
IEEE 802.3ba is the set of standards afaik, but each vendor implemented things before the standards were in place.@ Blinky42: thanks !
is there a spec that states at what distance receivers are needed ?
or how is one gonna figure this out ?