Storing instruments, the electronic equipment needed to enhance their output such as mixers as amps, sheet music, and digital backups of musical creations must be done the right way to preserve them well.
Most important is controlling the temperature within the storage unit. Severe temperatures, drastic temperature changes, and above-normal levels of humidity can cause brass instruments to expand and shrink, strings and wood to warp, drum skins to dry, and mildew to grow. Many self-storage facilities offer climate control.