Well, Symantec laid me off 18 months ago, 18 months after my colleagues and friends were laid off when our site in NZ closed. So no, I can't see getting to Vision! Not that I could have anyway, MF was a one-off and it's a bit of a strange story how I ended up there in fact. But it certainly was nice getting some of that Altiris attitude, they'd done all the right things in terms of relating to their customers - it's a shame that Greg in particular moved on and so that aspect of the Altiris culture didn't get to take root.
probably something that makes it more aware of the advanced hard drives that have come out over the past few years
Actually, you're right on that; it's a detail I'd forgotten. During 2010 we got some Toshiba and WD pre-production prototype drives sent to NZ for us to work on, and RobC did some experimenting with those. However, Ghost really isn't that specifically aware of them because 99% of what they do Just Works as long as you respect the 4kb sector-alignment, which Vista and Win7 partitions did by default anyway. Retrofitting something back in to 4kb-align XP partitions might have happened but RobC would have done rather than me (between the two of us we had a pretty full dance card).
[ SSDs were a slightly different matter as TRIM support appeared on drives in 2010 too and that meant adding extra code to detect whether the command was supported by the drive and send it. Advanced Format was easier in that respect as Vista had anticipated what those drives needed and it just worked. ]
is that using the ghost32.exe in “master” mode while the “slaves” listen for the same packet? [...] It does not really seem like a “real” multicast when you compare it the ghostcast method.
It's basically that, yeah; the thing is that RapiDeploy customers in DS 6.9 were used to that as it was the only mode RD had, and in particular the fact that no multicast traffic ever crossed subnet boundaries, and so we wanted to make sure they had the option of keeping something that had the exact same usage pattern on their network infrastructure as RD in DS6.9 had been (the question of whether the DS team could get 7.x to feature parity with 6.9 to get those people to upgrade being a separate question; our goal was to make our piece work, we had no control of influence over DS).
As for the perf in that mode, it usually wasn't as good as GhostCast but then GhostCast itself has very serious design problems - UDP packets are small and have a high overhead getting them from the program into and out of the operating system compared to TCP streams, especially in GbE and 10GbE where there is also TCP/IP offload in the NIC you can take advantage of. There's also a 64kb fixed window in GhostCast just like classic TCP for communication with the "master" client that GhostCast has chosen, so at GbE speeds just one router hop means that the max speed is limited by the latency between ends because that 64kb fills almost instantaneously.
Now, a fresh modern design can avoid all these problems, and provide other benefits too, but that's a topic for another day. I have not been idle, let's just say that.
since the ghostcast server is accessing the ghost image via SMB share as well.
Ah, interesting. But no, my expectation would be that using the 12.x build of Ghost32.exe wouldn't affect things. The changes for SMB perf were unique to the Ghost client executable - and the GhostCast protocol is usually the limiting factor on GbE networks (due to the small send window and other factors, I never ever saw it get above 25% utilitization of a GbE link). It's certainly possible that there's something that could be gained there - complex systems are always full of surprises - but I wouldn't predict it from first principles.
Since you did remind me of the issue of 4kb drives then maybe if you are deploying XP images there will be some benefit for those, but since I don't have access to the 12.x builds I can't be sure if it realigns them for you or not.
Is there a performance increase or worse a decrease when it comes so accessing ghost images via HTTP?
It could go either way in principle, and as we hadn't tried it out that much before the site closure we didn't have either much data to extrapolate from or time to do any performance tuning around that.
The primary goal in adding it was that again RD had something like it, and in any case it was a feature we'd wanted for *years* to do. We'd had customers in Australia who had these massive, ruinously expensive HTTP caching proxies and wanted to run their imaging traffic over them to their remote offices in places like Perth, and prior to coming under Altiris we just could never get approval to add that. Because RD had that feature, suddenly the political obstacle vanished, as did many others at least until Greg & co left and then we went back to being under hostile VPs again.