On Dec 13th a storage node in one of our Minneapolis data centers experienced a hardware failure. While typically a non-event, additional human error escalated this failure into backup archive corruption for 20 of our customers, affecting their backup in varying degrees.
Since CrashPlan automatically detects and heals around archive corruption, the affected customers don't need to do anything - their backup archives will automatically heal over the internet. (However, to accelerate this process, we have offered overnight free seeding services to those customers.)
While CrashPlan manages over 60 petabytes of consumer data globally and this event was limited to 20 people, we nevertheless take this failure very seriously and sincerely apologize for this lapse.
Further, our operations team has modified our processes to avoid this human error in the future.