Lumber stored vertically should be raised off the ground to prevent water damage, and be supported at the top and bottom to prevent bowing.
Store your lumber in a clean, cool, shaded and dry location. If you're storing wood in an area with high relative humidity—80 percent or more—be sure it's wrapped in material that is impermeable to vapor. This prevents the wood from absorbing significant amounts of moisture from the surrounding air.
Self Storage Blog
How can a storage renter prepare their belongings for an emergency event or evacuation?
Use red bins or one specific color labeled for emergencies.
Store all emergency items, valuable items and personal items inside said colored bins.
Store closest to access door
Label Bins if needed.
Store things like; important documents, first aid kit, flashlights, batteries, extra cell phone chargers, 2-3 gallons of water, (do not store food in storage unit) wet wipes, hand sanitizer, sleeping bags, warm clothes, extra socks, shoes and jacket.
Here are some great tips to Store Business Documents and Files in Self-Storage
Sort and organize your documents.
Label and date accordingly
Create a Log for Checking In-Out by all employees entering unit.
Choose a Climate Controlled Storage Unit.
Store in Banker Boxes or Plastic Bins