WD20EARS just added on the official HCL - mistake and issues

ddomnick wrote:

Thanks MrCyberdude, but FYI not all WD20EARS are 4K. Mine in fact are, as the jumper settings for XP are on the label - A clear indication. I think what I was after was if any ReadyNAS guru's could hypothesize why write speeds were high while I was copying +500GB of data over several hours until I rebooted the NAS, at which point it A): Took an extra 20 minutes to reboot over normal and B): write speeds dropped off significantly. I think is is due to the 4K sectors on my drives, but why after copying copius ammounts of data? The NAS was rebooted a few times after the drive setup but before coping data - what changed? I hope NetGear lights a fire under the 4K sector support beta FW....

Not sure of what you or the nas did.
Is it possible you only had say 1 HDD installed(or non-redundancy), as then files would copy quite fast.
As soon as you have redundancy working the NAS would then have to write to multiple HDD with the XOR calculation and then all HDD come into the equation with the compounding 4KB overlap causing issues?

Just a guess as I'm only an end user.