jkr98116 wrote:
1 - Does a hard disk drive for local archival storage need to be powered when not being accessed?
A - This implies the " hard disk drive for local archival storage " is an External Drive.
A - Then No it does not need to the powered under those specific conditions
A - It will need to be Powered of you intend to use it
Q - Can it be left idle and unpowered indefinitely.
A -Yes
Q - Does it need refreshing in some sense?
A - If you have created changes to Your Data on the Internal Drive and what to save to changed Data to the Archive Drive - Yes it will need to be Refreshed