I have a 4x2TB RAID-z array using WD Green 4k block disks. I didn't know anything about the performance issues when I set it up, and by the time I transferred files, it was too late to really do anything about it.
Since then, I have filled the array, so I bought one more 2TB Green drive, which I will use as a normal disk with no redundancy (not needed). Having this disk has given me the idea that I may be able to use it to fix the performance issues with the array, one disk at a time. What I am thinking is this:
My two questions are:
Is this possible?
What do I need to do to each disk (something about GEOM NOP right)?
Since then, I have filled the array, so I bought one more 2TB Green drive, which I will use as a normal disk with no redundancy (not needed). Having this disk has given me the idea that I may be able to use it to fix the performance issues with the array, one disk at a time. What I am thinking is this:
- Install new disk into machine
- "Bless" it with the proper config for good ZFS performance.
- Take out one of the existing disks, and then rebuild the array with the new, blessed disk.
- Repeat the last two steps, one by one, until all four disks are upgraded, making the array fast.
My two questions are:
Is this possible?
What do I need to do to each disk (something about GEOM NOP right)?
