Messages in this thread | | | From | Daniel Phillips <> | Subject | Re: [ANNOUNCE] Ramback: faster than a speeding bullet | Date | Mon, 31 Mar 2008 04:39:14 -0700 |
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On Tuesday 18 March 2008 06:57, Alan Cox wrote: > > If the primary server goes down then we lose exactly one interesting > > data element stored only in its memory: the ramdisk dirty map. Though > > we could be much cleverer, the backup server will simply set its entire > > map to dirty when it takes over, and will duly sync back the entire > > ramdisk to media a few minutes later. > > Assuming the 1010 has proper power isolation that makes sense and would > give you pretty much what was wanted. Especially as you can replace the > secondary server with a small system which does *nothing* but sync the > ramdisk back and so is far less likely to crash.
The 1010 just has power rails that connect to dual power supplies if that is what you mean.
> Does make you wonder why its not built into the violin ;)
Perhaps adding what amounts to a server motherboard did not make sense, when an external server can already do the job. I don't know, there is a certain purity in the JBOM concept (just a box of memory), and no doubt they were able to bring this beast to market earlier because of it.
I would be far from surprised to see a later incarnation incorporate a hard disk. Did I mention it already has Linux running inside it to do the raid management etc?
Regards,
Daniel
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