I RMA'd the drive and got it back a few days ago. It still has no buffer. The store returned the same drive I sent them. . . it has the same serial number and my personal sticker is still on it.
Also, prior to RMAing the drive, after my pc had been on for a while, I would hear the Windows tone for a drive turning off. I could never find the drive because I could still access all of them. While the drive was out for RMA, I never heard the tone. I installed the "repaired" drive, moved the files back onto it but I'm again getting the Windows tone for a drive turning off, so I believe the tone is for this drive but I can access the drive. I didn't didn't mention the tone in my first post because I didn't think to mention it until I reinstalled the drive and then I put 2 and 2 together.
So I'm not sure if the drive was fixed because it still has no buffer and I'm again getting the tone that a drive has turned off (even tho I can still access the files). I specifically mentioned that the drive has no buffer when I contacted them and they sent me an RMA number because of it, and then they sent me the same drive back with no buffer again.
I think it's still broken. I'd appreciate any thoughts from others about this.