1. If there are an arm osx server, the software will come soon, recompile to arm on xcode it's near a trivial task.
There's only theoretical support for ARM as it stands now. Sore, everything is avery benevolent world is just a compile away and that's real easy.. but in the real world, it's not that simple at all. Look at the support for very mature platforms like PowerPC.. IBM and Freescale tried for years to get the x86-centric Open source community to just "recompile".. but hey, it wasn't that easy at all. And IBM does make servers. One of the problems they faces was that x86 applications does not just recompile to big endian plattforms, and hey.. ARM is big endian. And I'm sure that Apple developers are eager to support another plattform, which would be very low volume and quite high in support. The toolchain is there, but would they jump eagerly to ARM just because Apple tries to release a niche server plattform? Hardly.
2. You don't understand Servers, servers require efficient cpu mote than power, right now server farm are moving it's LAMP Servers to arm power savings are so huge and software it's ready and abundant (Linux as OSX it's very portable), Intel cpu outperform ARM on single core performance, it super scaling processing it's deeper, but 4 64 bit arm comes does the work of a single Xeon core, now there are 32 cores x64 arm cpu deployed and 64 & 128 cores versions on the way (that why Intel released a 18 cores Xeon).
You know nothing about what I know, thank you.
We can see how software vendors are jumping to the opportunity to support AMD's, TI's, APM's and Cavium's ARM plattforms. No, they are not.. some products are there in theory, but hey, most are just prototypes, because its easy to just recompile for prototypes.. So.. Oracle Java? Seems like Java v8 for 64-bit ARM is at least half a year away. Since that was a long time coming, this transition cannot really be considered a simple recompile. And why on earth would Oracle support Apple's tiny tiny platform?
Ohh, and can you get MySQL support on ARM, or even a download? Or should a just recompile it myself?
Dell and HP are really throwing themselves behind their ARM endeavors.. Those Moonshot servers are really flying of the shelves. They must be since the most important thing is power savings. Or.. it might be x86 support. I don't know.. My money is on the latter, in the 1-10 year timeframe. And that's why the Moonshot servers are x86 now, and not ARM.
And if recompile is such an easy thing to do.. why is the software support for mature server plattforms like POWER and Sparc nowhere near x86? And if we are talking performance/watt, single core performance and scale out parallelism.. neither ARM not x86 is near these guys. But still.. they are not particularly successful in the server space.. because of x86 legacy.
3. Apple more than a powerful Mac Server, needs one compact and cheap to compete with the cornucopia of NAS Devices
I'd certainly like to see that, but Apple really doesn't need to. Should Apple go don't this route, they could just pick an off the shelf ARM SoC, and run iOS on it. this is not the server we are talking about here, this is a slightly more capable Time Capsule, that's a far cry from Mac OS X Server..
4. actually Apple don't need a new cpu an A7 on an appliance it's enough for a headless osx server (headless I mean to say having no display but only Web/console based management), enabling Apple to offer an robust NAS appliance loaded with 2 or more hard drives, and leaving demanding users the choice of an Intel based Mac mini for higher server needs.
I thought we were talking about servers.. not NAS. If were talking NAS, I'm with you.. go ahead. I want Apple to open up an iSO based SDK and App Store for a slightly modified Time Capsule and AppleTV. I really don't know why they haven't.