weird hdd beeping behaviour

[fuzzymath10]

Last night my pc woke me up. seems like one of the drives is beeping. I have seven drives so I didn't try to figure out which one. Strangest part is that all of them seem to be running fine, i.e. being detected and can access all data.

any ideas what this might be?

 

[pandemonium]

How are we certain it's a HDD that's beeping? External or internal?

Doing a quick google search results in Seagate drives being the primary result with a "beeping" HDD.

This is the closest similar issue I found with the limited diagnostic information provided:
http://forum.hddguru.com/viewtopic.php?t=16133&start

 

[fuzzymath10]

sorry, should have given more detail...i was still half asleep.

All the drives are internal - 3 + SSD attached to motherboard and 4 attached to PCI controller. I didn't install the PC speaker (and I don't think there is one built into the motherboard, since there is never a POST beep), so I'm pretty sure it's not from any other device. Also my best guess is from the fact that I hear a seeking-ish noise right after each beep.

I did notice that video cards can beep so I'd better check that too, but the seeking noise feels related so I'm leaning towards hard drive. A few drives are connected using molex adapters so I'll also check that (X460 natively has only 5 SATA plugs).

Unfortunately that link's youtube video is dead, but based on the following links my problem is different. My beeping is at random times, i.e. it might cluster a few beeps ever few seconds, then not beep for awhile (e.g. 30mins) then beep once or twice, and then not beep again.

http://www.youtube.com/watch?v=-06b0Uxcj2Q
http://www.youtube.com/watch?v=xXxtSUwC2wk