Safekeeping or storage: keeping items, money, or documents in custody or storage for protection and management.
貴重品はホテルの金庫で保管してください。
Please keep valuables in the hotel's safe.
荷物は係が一時的に保管します。
The staff will store your luggage temporarily.
重要な書類は電子データとしても保管しておくと安心だ。
It's wise to keep important documents as electronic files as well.