Recording Session Storage Calculator

How the Recording Session Storage Calculator Works

Digital audio can consume a surprising amount of storage once a recording project gets underway. A single track may be small, but multiply it by a full band, several takes, overdubs, edits, alternate versions and an album's worth of songs, and the numbers add up quickly.

The Recording Session Storage Calculator estimates how much space your project is likely to need based on your recording format and the way you expect to work.

It separates that estimate into raw recorded audio, working project space and backup storage, so you can plan the session without pretending every byte on the drive will be a finished take.

Basic Tracking vs. Overdubs

The calculator treats basic tracking and overdubs separately because they're usually recorded differently.

If you're recording a 16-track band performance, all 16 tracks may run for every take. Three complete takes therefore produce three songs' worth of audio across all 16 tracks.

An overdub is different. Recording three lead-vocal takes doesn't mean you're recording another 16 tracks each time. That's why the calculator asks separately for:

• Simultaneous tracks during basic tracking

• Basic-track takes per song

• Overdub tracks per song

• Average takes per overdub

This produces a much more useful estimate than simply multiplying your maximum track count by the total time spent in the studio.

What Is Editing and Comping Headroom?

The files you deliberately record aren't always the end of the story.

A working session may accumulate alternate takes, comps, consolidated tracks, rendered effects, edited versions and other audio as the project develops. The calculator provides three planning levels:

Light is appropriate for relatively straightforward sessions with limited editing and rendering.

Typical allows more room for ordinary comping, editing and additional working audio.

Heavy is intended for projects with extensive editing, alternate material and rendered files.

This isn't meant to predict exactly how your DAW manages files. It's simply a practical allowance for the fact that real sessions tend to grow.

What About Rough Mixes and Bounces?

Stereo mixes are audio files too, and projects can accumulate quite a few of them.

If you regularly send mixes to bandmates, compare revisions or export work-in-progress versions, choose an approximate number of stereo bounces per song. The calculator adds those files to the storage estimate.

If you don't expect to keep many bounces—or simply want to calculate tracking and overdub storage—leave this set to None.

Project Storage Is Not Drive Capacity

If the calculator recommends reserving 50 GB for a project, that doesn't mean a drive with exactly 50 GB free is an ideal recording drive.

The project-storage figure is the amount to budget for that particular session. Your computer and recording drive may also need room for other sessions, temporary files, applications, caches and normal filesystem operation.

In other words, “Reserve 50 GB for this project” and “buy a 50 GB drive” are not the same recommendation.

Don't Forget the Backup

A recording that exists in only one place isn't safely backed up.

Selecting one backup in the calculator adds another full project allocation. A project with a 50 GB working-space recommendation would therefore require about 100 GB across the working copy and one backup.

For important recordings, consider maintaining more than one backup and keeping at least one copy separate from the recording computer or primary studio drive.

The calculator estimates the storage involved; your backup strategy determines how well the recordings are protected.

FAQ

How much storage does one minute of audio use?
It depends on sample rate, bit depth and channel count. At 48 kHz/24-bit, one minute of uncompressed mono audio uses about 8.64 MB. A stereo file at the same format uses about twice that amount.

Why does the calculator ask for simultaneous tracks?
During basic tracking, multiple tracks may be recorded for the entire performance. Recording 16 tracks simultaneously for four minutes creates 16 four-minute audio files, not one.

What counts as an overdub track?
Think of each separately recorded part: lead vocal, backing vocal, guitar overdub, keyboard, percussion and so on. If you expect eight such parts on an average song, enter eight overdub tracks.

What if different overdubs have different numbers of takes?
Use a reasonable average. If some parts require one take and others routinely require five or six, estimate the average across the project. This is a planning calculator, so precision down to an individual take isn't necessary.

Does the calculator include unused portions of takes?
It assumes the entered takes run for approximately the average song length. Punch-ins and short takes will use less space, while long pre-rolls, post-rolls, jams and false starts can use more.

Does 32-bit float really use more storage than 24-bit audio?
Yes. For the uncompressed PCM calculation used here, a 32-bit audio stream contains more data per sample than a 24-bit stream, so its storage requirement is correspondingly larger.

Does the calculator include plug-ins and virtual instruments?
No. It estimates audio-session storage. Plug-in installations, sample libraries, virtual instruments and other software can require substantial additional storage, but they're separate from the recording project itself.

What about video?
Video isn't included. Video storage varies enormously depending on resolution, frame rate, codec and compression. If you're recording or editing video alongside the session, plan for that separately.

Why is the recommended project space larger than the raw audio total?
Real projects tend to accumulate more material than the original recordings. The calculator adds your selected editing and comping allowance, then provides a modest additional project cushion and rounds the result to a useful planning number.

Why doesn't the calculator tell me what size SSD to buy?
Because project size and drive capacity are different questions. A 50 GB project doesn't require a dedicated 50 GB drive, and you generally don't want your recording drive operating at nearly full capacity. The calculator tells you how much space to reserve for the project.

Should my backup be on the same drive?
A second copy on the same physical drive doesn't protect you if that drive fails. A useful backup should live on a separate storage device or another independent storage location.

Are compressed formats like MP3 or AAC included?
No. Recording sessions generally use uncompressed or lossless production audio rather than lossy delivery formats such as MP3. The calculator is based on uncompressed PCM-style audio.

Is this an exact prediction of my DAW session size?
No. Different DAWs handle unused takes, caches, waveform files, freeze files, automatic backups and rendered audio differently. The calculator is intended to give you a realistic planning estimate before and during a project. We do the math. You make the music.