WD RE2 500Gb?

Hi guys!
I heard only positive things about WD RE2 500Gb on this forum. It seems like you guys really like this HD and I've been affected:)
I wonder 3 things:
1.) Is it so good as you say, only as RAID connected HD or even as ordinary S-ATA (because that's what I need)?
2.) Does it have cable-free, direct attach drive connection?
3.) I have one 160Gb as primary HD right now (thatone that came originally with comp, "Intel" I think). If I do buy "WD RE2 500Gb", should I use it as primary or secondary, what's your advice?
MacPro 2 x 2GHz Dual-Core Intel Xeon & Mac G4 400MHz   Mac OS X (10.4.8)  

Wolfie71,
Keep in mind that the RE2 was designed as a RAID drive. Not that you can't use it as a non-RAID drive, mind you, but that some people who have spoken to WD are saying that WD recommends the SE series drives for non-RAID and the RE2 only for RAID.
Because of the TLER feature, the RE2 does not provide the same error protection recovery times found non-RAID drives (a feature for RAIDs but not a feature for non-RAIDS), something to keep in mind if your data is more important to you than the drive itself. Note that data usually gets destroyed before the bearings, motors or the heads (at least on later model drives).
Some people, apparently have been able to disable TLER for use in non-RAIDs but these are usually PC techies.
I would be interested if anyone on the Mac side has been able to disable TLER.
Moreover, is price vs performance is your consideration the SE16 series may be a better choice. Some are claiming that the SE16 and RE2s basically use the same components and the the only real difference is in the firmware and that the MTBF and warranty is better for the RE2 (and only because it is tested longer than the SE16s). Drives tend to fail most in the first few hours. Once the first few hours are achived without error, the MTBF improves.
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