Need help moving from CDP to Mac Mini music server

I'll respond to either this thread or one of the ones I started a few months back once I've adequate time to evaluate the AE and the quality running it wireless. As for my audio-server, right now we're in beta mode if you will. I've ripped all my Pearl Jam CD's to my PC upstairs and share it via itunes. I access it through my wireless laptop downstairs where my stereo is and point the laptop to the AE . I haven't had one audio hiccup due to interference. If you think about the path the music has to travel to go from my laptop to the stereo that's pretty impressive on a 54mb/sec wireless setup. Edesilva explained the RAID 5 setup well enough, but let me just add one or two things in case you are still a bit confused. Using the Terra station as an example. If you have .7 TB usable, in his exmple using 4 disks, it's probably made up of 4x300GB drives. Again this is just a guess as there are many different RAID5 schemes used by the vendors, but the point is you don't make use of all of the space on all of the drives, that's by design. A simplistic way to think about it is take the total number of drives you have and subtract one. The remaining total is roughly what you will have usable under R5. Also, you mentioned using two drives and only filling up half of it. The way it works is you have a mirrored pair. It's called RAID 1 (Redundant Array of Inexpensive Disks). You have the full capacity of one drive, and the second drive is not directly accessable, the OS "mirrors" the data on the first to the second so if it dies, with a bit of work you can access everything by activating the second drive.

I understand the advantages of RAID technology for redundancy but I'm not sure it's necessarily the best solution in this use, at least for most people. The advantage is that you're constantly backing up your data so that there's no chance you'll lose any of the work you've done in the interim between backups, which is a good thing, but there are disadvantages to having the redundant data housed in the same box as your primary data.

I think the way most people will set up a hard drive-based system is to spend a lot of time initially ripping a big pile of CD's, then ripping new stuff occasionally as it's bought. What you're interested in protecting is that big initial investment of time and it might make more sense to have two separate external drives, one as the primary and one that is brought out once a week or once a month to take the new stuff.

If you're really interested in protecting that investment, you're better off having the second drive in a different physical location and offline so that some kind of accident, a power surge or knocking the enclosure off a desktop doesn't take out everything. If you've ripped 10 CD's since the last time you took your backup drive out of the closet and done a backup, it's not a big deal since it takes less than five minutes to rip most discs.

RAID is cool but it's a little more complicated and expensive. Like many of you, I'm entertained by complicated solutions but I think in this case simpler might be better.

Sfar, There is no requirement for drives configured in any type of RAID configuration to be housed in the same enclosure. There might be limitations based on what device is handling the RAID setup (i.e. the controller in the external storage).

Multiple enclosures, multiple paths to the data, etc. are all just additional layers of protection. In the end the goal is to eliminate as many single points of failure as possible/makes sense. Having two seperate disks or enclosures and synching them up manually via a copy or something similar may make sense for some, but setting up a simple RAID 1 or RAID 5 device isn't rocket science, it just takes a little research that anyone on this site can handle with a bit of investigation. Again the end goal is not to lose all of your hard work, whichever method one uses, that method should be good enough. Personally, I'll probably buy 2 internal drives and mirror them with the OS, that will be good enough for me. I'm confidant enough if one drive fails I can get at the data on the second easily enough.
Personally I think the biggest gain in audio quality in this entire setup is going to be the way the data gets from the source componant to the DAC. I don't think the traditional optical and digital coax type of connections will be the way to go once PC based audio really takes off in the high end. Where / how it's stored as well as how it gets there won't be as important as that "last leg" to the DAC. Just my opinion of course.

I forgot to add one thing. One benefit of manually copying the data as Sfar suggests over using an automatically mirrored pair of disks, is if you accidentally delete what is on the active disk, guess what, your mirror is going to remove it as well. That might be reason enough for some to stick with the old manual method.

Thanks snipes, Sfar, and Edesilva for all the HD advice. The only thing that confuses me about the Terastation RAID 5 solution is that if it only has 4 x 250GB drives, how can one of those drives store the data of the other three? I mean, logically it would seem like the most real storage you could have on the Terastation would be <500 GB, since you need to have that much space to mirror it, even if it's done in blocks, right? I understand that having more drives means that you're better covered in the event that one goes down. I think I'm going to go with one of the drives from Other World Computer or Newer Technology (same company: http://eshop.macsales.com/shop/firewire/) such as the 1TB AL Pro 800 RAID STRIPE FireWire 800/400 for $760. It gets some good reviews in the mac mags and online community, and Allows me have total redundacy (and the housing is nicer than the Terastation). I know the terastation is cheaper and has more features, but it's overkill for me. I have a 1BR apartment, so don't need to feed an entire house. I expect Mac at some point to come out with a real home media computer, so I know all of this is a basic (and hence wasted) investment so I'm just looking to get off the ground.

Still looks like the Benchmark is the way to go, although I'm going to audition the Stello DA220 MK2 against it if the dealer will let me bring it home). So it looks like I'm just around 3 grand depending on the DAC.

Any Mac Mini specs (ram, etc) people recommend? I mean, I usually just load it up, but since this is only for music do I need the extra RAM and Faster core duo processor? Thoughts?

I'm also going to use the AE w/toslink to the DAC for the time being, unless I go with the stello. This way I can locate the computer and drives in a better location.

Thanks for all the suggestions. Keep 'em coming.

-matt