jonjon1123

I contacted Seagate support and they said: I guess I could try hooking up the drives to a Windows machine and enabling write caching there.

Gotcha. Any thoughts on why my drives won't let me enable write caching?

Hi All, I have a Dell R710 with a H200 flashed to IT mode (and flashed to allow it to be put in the dedicated storage slot if that makes a difference...). I have 4 Seagate 6TB Iron Wolf drives (ST6000VN0033) connected to the H200. From what I understand, this setup should allow unRaid to fully manage the drives. What confuses me is when I run FCP it reports that "Write Cache is disabled" is all 4 of those drives. When I run the following command to enable write caching on drive one of the drives (sdd in the below example): hdparm -W1 /dev/sdd It returns the below indicating that write cache is still set to off even though I just issued a commend to turn it on. /dev/sdd: setting drive write-caching to 1 (on) write-caching = 0 (off) This is true for any of the 4 drives. So my question is, does write caching even apply to the H200 when flashed to IT mode? If not, I am assuming I can just ignore the warning in FCP. If write caching does apply, how can I get these drives to accept enabling write cache? I thought it might be a problem with the H200 having write caching disabled by default, but all of the guides I have found entail loading up the LSI software and enabling write cache on a logical volume... which I don't have since I am not using any RAID software on the H200 card itself. Since it is flashed to IT mode, I am passing the drives directly through the H200. Obviously I have confused. Can someone straighten me out? Thanks! -Jon-