I have the following drives:
- Seagate Barracuda ST3200054AS
- WDC WD20EADS-00S2B0
- Samsung HD204UI
As far as I understand, the first are ordinary 512 drives while the last is 4096 (Advanced format). Together with a new 2TB drive, I want to create a 6TB RAIDz1 with ZFS in FreeNAS. The new drive must most likely be also Advanced format because the old 512 are becoming rare/expensive.
So I will effectively have two 512-byte-block and two 4096-byte-block drives. What special things must I take care in order to not decrease performance?
When I chose "Force 4096 bytes sector size" in the volume manager, will I make sure that I will get the same performance if all block sizes were equal?