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This review is from: areca ARC-6120-T121 Battery Backup
Pros: It hasn't failed yet, so that's pretty awesome. It's hard to write pro's on a battery!
Cons: It was actually a performance loss for me until I tweaked some configs...
Other Thoughts: Adding this BBU to your raid card will do a few things. It allows you to utilize the on-board ram to it's fullest without the risk of losing the data if your power goes out. The thing is though... If you do add this, it will disable writing to the cache in your hard drives, which for me was a MAJOR performance loss. It took months of emails to areca to figure out why my old raid card with significantly less ram was outperforming my new one. The areca card disables the cache in the hard drives because it can't supply power to them in the event of a power loss (thus, you'd lose some data). You can override this "feature" in the system config section of the website hosted by your raid card by switching "Disk Write Cache Mode" to Enabled from auto. In the event of a power loss, there is now a chance of losing some of your data though, so you should only do this if you have a UPS attached to your computer.
Another thing is that this BBU is made for areca raid cards with DDR3 RAM. It is not compatible with the older cards. If your raid card wants a "ARC-6120BA-T121", THIS IS NOT THE RIGHT PRODUCT!
Pros: -The write speeds over esata are great.
-The speeds over USB are good for a USB 2.0 slot. Files were transferring at ~320Mbits/sec (40 mb/sec) from an internal drive to a drive on the BlacX docking station. As expected, transferring files from a hard drive on the docking station to the other drive on the docking station cuts the speed in half. I was getting 22mb/sec on this test
Cons: 1) It only supports two drives over esata if your motherboard/raid controller supports esata port multiplying. My top of the line asus mobo does not so it looks like you'll need to purchase an esata card with this feature.
2) As the box says, it does not support drives over 2tb. I wish I saw this in the store before I bought it.
Pros: -your key presses are register extremely fast
-the usb slot is really just an extension cable. you get full speeds out of it because the keyboard's cable has 2 usb plugs.
-it's shiny and pretty :D
Cons: -I'm extremely light and I couldn't even rest my fingers on the keyboard without keystrokes being sent to the computer. I died to fire several times this way =(.
The F1-F12 keys, all the macro keys, and some other keys are not mechanical keys. Once you get used to pressing mechanical keys, you won't be tapping the non-mechanical keys hard enough for it to register a keystroke.
-The macro keys are on a lower plane. You will not be able to reach more than 1 or 2 of them without moving your entire hand over to it.
-The "L" key was no where near as sensitive as the rest of the keyboard. I had to fully press that key into the keyboard for it to register. It got worse over time. Eventually i had to really slam it in there for it to register, and eventually stopped working all together.
-I bought the matching mouse with this keyboard and plugged it into the keyboard's USB slot. When I unplugged/plugged back in the cables from the motherboard, the mouse completely died. I don't think this is because of the keyboard, but it might be.
Other Thoughts: Returned both defective products. Tech support also agreed that both the keyboard and the mouse were defective and needed to be replaced. Neither product lasted more than a week.
I expected more from corsair. Needless to say I won't be buying there products in the future.