14 minutes ago, pwm said:

Which drives did you handle with the Marvell card?

 

2 WD Reds 3 TB

33 minutes ago, nickp85 said:

 

2 WD Reds 3 TB

 

I was thinking if the card handled data and/or parity disks.

 

If you got parity errors while using the Marvell card, then the question is if the Marvell card was responsible for parity or for data disks.

 

If the Marvell card was responsible for one or more data disks, then they may contain corrupted files.

Hopefully, the Marvell handled parity so a rebuild after removing the card gives you correct parity computed from correct data disks.

2 minutes ago, pwm said:

 

I was thinking if the card handled data and/or parity disks.

 

If you got parity errors while using the Marvell card, then the question is if the Marvell card was responsible for parity or for data disks.

 

If the Marvell card was responsible for one or more data disks, then they may contain corrupted files.

Hopefully, the Marvell handled parity so a rebuild after removing the card gives you correct parity computed from correct data disks.

 

So the 2 drives on the card were just data disks and further, my older data disks (over 5 years old) that I exclude from sensitive files in case they fail.  So I think the only data on them are media files like TV and movie.  I wouldn't be too upset if I noticed corrupt files on them.

OK. It's a bit hard to know if the Marvell cards only gives bad data when you read from the disks, or if they also feeds bad data to the disks.

 

But it helps a lot if it wasn't critical documents you had on the disks. Lots of media files are designed to work quite well even with some broken blocks.

1 hour ago, pwm said:

OK. It's a bit hard to know if the Marvell cards only gives bad data when you read from the disks, or if they also feeds bad data to the disks.

 

But it helps a lot if it wasn't critical documents you had on the disks. Lots of media files are designed to work quite well even with some broken blocks.

Thank you and others for all the help.  This was driving me nuts for the better part of a week.  Happy it was as simple as ditching the Marvell card.  I ordered a $13.99 card from Amazon with 2 ports with an Asmedia chipset that was recommended on another thread so hopefully that will be fine.  I'd like to put my second m2 slot back to x4 speed.