AOE was:Re: iSCSI and friends, was Re: UNIX V7
tpeters at mixcom.com
Thu Jun 11 21:33:57 CDT 2009
At 11:22 PM 6/11/2009 +0100, you wrote:
>On Thu, 2009-06-11 at 12:51 -0400, Dave McGuire wrote:
> > On Jun 11, 2009, at 12:29 PM, John Finigan wrote:
> > > iSCSI makes up (in a clumsy way) for a lack of a "first class citizen"
> > Eh. (and this is WAY OT) iSCSI is kinda interesting; I've been
> > working with it quite a bit lately.
>Have you seen ATAoE? It is, as the name implies, ATA over Ethernet.
>Unlike the 300-page mail-order catalogue of the iSCSI spec, the ATAoE
>spec is eight pages, mostly taken up with diagrams showing an ATA packet
>wrapped inside an Ethernet frame.
>I toyed briefly with the idea of writing an ATAoE target for the PDP11.
>Not sure if I could port it to OS/2, though, or make it talk to TK50s.
We here at Milwaukee County Transit have about 59TB on AOE
(ATA-over-Ethernet). We use these 15-slot boxes from Coraid that boot up a
little Linux kernel- but that's largely invisible to the user. It uses all
the existing wiring- cat 5, fiber, whatever. We dedicated some small
ethernet switches to them, but you wouldn't necessarily have to. One of
them is across the street, on a fiber link, in case the building blows up.
The Coraid boxes use standard SATA drives, any size, and support all kinda
array structures, RAID levels, etc. I think the AOE "initiator" is
open-source, so you should be able to port it to older architecture.
978. Those parts of the system that you can hit with a hammer are called
hardware; those program instructions that you can only curse at are called
software. -- Anonymous
--... ...-- -.. . -. ----. --.- --.- -...
tpeters at nospam.mixcom.com (remove "nospam") N9QQB (amateur radio)
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WAN/LAN/Telcom Analyst, Tech Writer, MCP, CCNA, Registered Linux User 385531
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