HDAT2 forum

Sorry for delayed answer (too busy).
According to ATA standard yes, after power on "it should" reset timer values to default values.
I am sorry, I didn't tried that yet, because I don't have any NAS/RAID device now.

Do the Samsung HD154UI's ERC persist at all past a power cycle? If not, HDAT2 is not really useful with these drives.

If Samsung follow the ATA standards then no, see my post from Nov 9.
Maybe you should ask at Samsung if they have any SW to support persistance of ERC settings.
When yes, it is vendor specific solution.

Hi. First post.

This issue has been very much on my mind lately, as I'm trying to build up a home NAS, and I find I really don't like having WD first let me set the fail timeout, then remove that, forcing me to buy drives which cost twice as much. I'm sure the rationale is that the Raid Edition drives have much more than just TLER that is needed for Raids. However, I want a large, but slow and low power array, not a large, fast array using as much power as needed. Having to buy drives which use twice the power is almost as frustrating as paying twice as much.

It occurs to me that if the ERC/CCTL values do not persist past a power cycle, the obvious thing to do is to create a small driver which runs at power on and uses the correct interface to set the things to a shorter time out at each power on cycle. Things like displays and controllers need a power on driver to run. Why not disks?