Wanted to jump in here to confirm.
This policy only affects devices that have not connected to CrashPlan Central in 6 months or longer. This does not affect volumes that have not connected to the device in that period of time. (i.e. an external hard drive that has not connected in 6 months.) Additionally, there is no minimum connection time for local CrashPlan backups.
It’s important for CrashPlan users to consistently connect their device(s). Part of CrashPlan’s ability to maintain the archive health and integrity relies upon regular connection from the device. CrashPlan is able to routinely perform maintenance on the archive by comparing checksums between both device and CrashPlan Central.
https://support.code42.com/Administrator/3/Monitoring_And_Ma...
Please let me know if I can provide additional clarity.
Best regards,
Jarrod