What do you use to index them? I found a program called Cathy Lister that is simple and gets the job done.
looks like an offline method: a sticker numbered with some kind of short descriptor and i guess the key is written on an index card stored near the drives.
I have always used a small app called JR Directory Printer.
http://download.cnet.com/JR-Directory-Printer/3000-2094_4-19648.htmlYou can make a file (Word/PDF, etc) that is made from printed dirs, subdirs and include cool metrics like # of files and folder/file sizes. You can do generic dir names or tell it to recurse. I label drives A-Z (and AA-ZZ) and then put a sticker on the drives so that I know which drives contain what. I am then left with a master file that is searchable. It is a really cool app and it works instantaneously.
A sample of the JR Directory Printer output looks like this:
Directory of I:\Dropbox\Phish Phamily\MP3\ph2013-07-31.kreider.NeumannMidSide.mp3f\
I:\Dropbox\Phish Phamily\MP3\ph2013-07-31.kreider.NeumannMidSide.mp3f\
=====================================================================
phish2013-07-31.txt 1 KB 8/3/2013 10:35:26 PM a
phish2013-07-31d1t01.mp3 9506 KB 8/3/2013 10:35:26 PM a
phish2013-07-31d1t02.mp3 7627 KB 8/3/2013 10:35:06 PM a
phish2013-07-31d1t03.mp3 5612 KB 8/3/2013 10:34:52 PM a
phish2013-07-31d1t04.mp3 12123 KB 8/3/2013 10:34:40 PM a
phish2013-07-31d1t05.mp3 11602 KB 8/3/2013 10:34:14 PM a
phish2013-07-31d1t06.mp3 5299 KB 8/3/2013 10:33:52 PM a
phish2013-07-31d1t07.mp3 9128 KB 8/3/2013 10:33:42 PM a
phish2013-07-31d1t08.mp3 12351 KB 8/3/2013 10:33:24 PM a
phish2013-07-31d1t09.mp3 4098 KB 8/3/2013 10:33:00 PM a
phish2013-07-31d1t10.mp3 14620 KB 8/3/2013 10:32:48 PM a
phish2013-07-31d1t11.mp3 14951 KB 8/3/2013 10:32:20 PM a
phish2013-07-31d2t01.mp3 53178 KB 8/3/2013 10:31:52 PM a
phish2013-07-31d2t02.mp3 9015 KB 8/3/2013 10:30:10 PM a
phish2013-07-31d2t03.mp3 13043 KB 8/3/2013 10:29:52 PM a
phish2013-07-31d2t04.mp3 13001 KB 8/3/2013 10:29:26 PM a
phish2013-07-31d2t05.mp3 5213 KB 8/3/2013 10:29:02 PM a
phish2013-07-31d2t06.mp3 17803 KB 8/3/2013 10:28:48 PM a
phish2013-07-31d2t07.mp3 11225 KB 8/3/2013 10:28:10 PM a
phish2013-07-31d2t08.mp3 5323 KB 8/3/2013 10:27:48 PM a
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Total 0 folder(s); 20 file(s)
Total files size: 235 MB; 234729 KB; 240362144 Bytes
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^