Got a band - need to store multiple recordings

[Usquabach]

Looking for a reliable way to maintain/store our band's self recorded music which will also allow it to be shared fairly easily. Been rocking hard drives with USB and CD backups for a long time now. Would anyone have confidence in an online file storage site for self recorded tunes that can be shared (more importantly stored safely) for a longer period of time?

Would like to know if my HD and backups fail I have something to fall back on. Cheers!