Excellent last 3 posts! Something I really care about (hotswapping) is finally getting the full treatment.
A few more key notes, most based on my own experiences:
On Codesmiths notes about using hotswapping:
He and I are in the same exact boat. I work on other people's computers all the time, and I often just want to get their drive online in my box. Being busy with a number of other things, I just refuse to restart that box (its on 24/7 - no hibernation). And if your main box is also acting like your Tivo and serving up a database, like mine is, bringing it down just to get a drive online is not good. I actually have a ViPower unit that takes SATA drives in my main system, and another ViPower unit that take IDE drives (IDE to SATA) in my test machine. Both hotswap perfectly -- incredibly useful.
On using hotswap for backup:
There simply is no better way. If you don't mind having your "media" be a hard drive, then this is really the ultimate solution. I have 3 80GB WD drives permanently mounted in metal trays that slide into the ViPower unit. I just pop one in, and that 80GB volume is online with a drive letter in about 4-6 seconds, operating at the full speed of SATA! I use True Image 9 to make a single file (compressed) backup of the main drive (a Raptor 150GB) to the backup drive, all within Windows (no rebooting). Drive has about 100GB on it -- takes about 45 minutes. You can actually still use the computer while the backup is in progress, but I normally prefer to close any key programs and do something simple like watch an episode of 24 or something. Pop it out when done, back in drawer. Or, take it offsite for added security. True Image is a top notch solution.
On SATA hotswap support:
It is my understanding that SATA II officially supports hotswap as a standard. Finding hotswap support for regular SATA is more of a crapshoot. I believe the great majority of motherboards do not support it. I mentioned that mine did (Asus A8N-SLI Premium), but it actually only works when using the RAID solutions. I wanted just simple SATA hotswap support. If you are lucky and your board does it, great. If not, you will need to get a SATA card that specifically has this support. I have 2 of these, one in each of my machines, and they both work fine:
Adaptec SATAConnect 1205SA
http://www.adaptec.com/worldwide/product/proddetail.html?sess=no&language=English+US&prodkey=ASH-1205SA&cat=%2fTechnology%2fSerial+ATA%2fHost+Controllers
Promise SATA 150 TX4
http://www.promise.com/product/product_detail_eng.asp?segment=Non-RAID%20HBAs&product_id=139
Keep in mind that the product descriptions may not say that they support hotswap (why?), but I have these exact 2 cards and they both work perfectly. I prefer the Adaptec -- its a simpler, cheaper card with a more simplified driver (the Promise one for some reason needs 2 drivers). Also -- the Promise card mentioned above is older, so you may have to get a later solution, which I'm sure supports hotswap.
On eSATA
I have a pretty recent board and it still does not have this external SATA thing. That would be nice, but I guess I still prefer the internal bay method.
On those ViPower units (SATA/SATA vs SATA/USB2)
The 2 ViPower units I have use small sliding latches, not keys. I think this is preferable. I had tried their SATA to USB2 and IDE to USB2 and had enormous trouble with large USB transfers on one of my machine. A large transfer would begin (like a backup or copy), but after a short while would fail. I tried lots of different controllers (like 4 or 5), could never get past it. I have forever given up on driving hard drives with USB. And -- those ViPower units (and others like it) had a SATA/IDE to USB2 bridge right on the unit. Once in a while, it would just not work. But then I discovered their Direct Link stuff. Using their SATA direct link is technically identical to plugging the drive in to the SATA connector directly -- no room for mis-anything. The unit connects directly to SATA, and extends the SATA signals all the way to the back of the drive. No bridges, no connectors. In fact, if you look at the tray holding the drive, the rear bottom left area is uncovered and exposes the drive's SATA and power connectors (the location of these I assume must be a standard). I needed something reliable, I think I have found it. I live near ViPower, and have tried (kinda embarrassed to say) about 6 of their various units over the last couple of years. The 2 units I have and recommend are:
For SATA drives
http://www.vipower.com.tw/P_MobileRACK.php?model_no=VP-5010LSF
For IDE drives
http://www.vipower.com.tw/P_MobileRACK.php?model_no=VP-1001LSF
Both are cheap ($35 to $45 I think). I am amazed that hotswap has not caught on big yet for non-RAID and non-server use. But I think its getting there. I noticed some of the new HP machines have a custom hard drive bay (SATA I think) right there in the front of the machine.
Overall, as you can tell, I find hotswap immensely valuable.
Hope this helps.
C