I am about to upgrade a 1TB drive to a 2TB drive.  The 1TB is about 80% full.  Assuming I have a precleared 2TB drive ready to go, about how long can I expect the whole process to take?  This is my first "upgrade" so just curious as what to expect.  Is the rest of my data still available during the rebuild?  Many thanks!

I would expect it to take about 8 hours assuming you already have a 2T parity drive or are just replacing the parity drive.

 

The array will be on-line during the rebuild but accessing data will be slower and will also impact the rebuild speed.

 

Peter

 

Yep, already have a 2TB parity.  Thanks for the info!

I recently swapped a drive. It seemed that by default the "maintenence mode" was checked so I was unable to access my shares during rebuild. If you still want access i think you have to make sure that is unchecked, but im not 100% sure. Even after rebuild, i was unable to access anything before i stopped and started the array again.