Record Digitally
Be aware of your disk space.

You may find yourself paying for recording space, or renting
recording equipment during the tracking phase. Don't let disk space
get in your way, you do not have time for that.

Collect the following data: # of channels, available disk space, and
recording resolution (which is measured in Sample Rate and Bit Rate).

A digital format recording describes all multi-media in samples or
snapshots. Digital pro-audio equipment and software both allow you to
adjust sample rate (the number of samples recorded each second), and
bit rate (the number of bits used to describe each sample). CD quality
is 16bit, 44.1 KHz/S (or 44,100 samples per second). High-resolution
recording equipment and software can capture up to 24bit, 192 KHz/S.
(BR/8)SR = KB/S
Bit Rate divided by 8 (as there are 8 bits in a byte), times Sample Rate (in KHz/S) equals Kilobytes per second.

(KB/S X 3600)/1,000,000 = GB/H
Multiply your kilobytes per second by 3600 (to give you kilobytes per hour) then divide by 1 million to find out the number of
gigabytes that particular recording resolution uses in an hour

Available disk space in GB/(GB/H X # of channels) = How long you can track.
Finally, find out how many gigabytes of free space are available on your recording format. Multiply GB/H times the number of
channels you intend to use, and then divide that number into your available space. This will tell you how long you can track. If your
project is longer than your end result, you must do one of three things…

1.        Increase your disk space.
2.        Decrease the number of channels.
3.        Decrease your recording resolution.
Decreasing the number of recorded channels can dramatically
mix time.