Dell 110T DLT1 Drive - Manual (Page 22)

Dell DLT, VS and SDLT Media Handbook Page 22
Cartridge Storage Conditions
Avoid moisture and direct sunlight
Can deform cartridge and/or ruin media
Normal storage (non-archival)
Between 61º F and 90º F (16º C and 32º C)
Between 20% and 80% relative humidity
Maximum wet bulb temperature 78º F (26º C)
Data archival storage (for one or more years)
Between 64º F and 79º F (18º C and 26º C)
Between 40% and 60% relative humidity