High duty cycles & adverse environmental conditions may require the drive to be cleaned on a regular basis to ensure optimum performance is maintained, & it is therefore considered good practice to clean the drive Approx. every two weeks. HPE recommends for this procedure an original HPE cleaning cartridge. HPE Super DLTtape cleaning cartridge HPE SDLT cleaning cartridges provide 20 cleans. HPE SDLT cartridges are tested beyond industry standards to ensure optimum performance & reliability with HPE Storage Works 220 & 320GB drives & libraries.