I've got a real mystery that's killing me and could use your help.
I have an LSI 9270-8i in a new Supermicro X9SRE-F that's running Windows 8.1. One of the virtual drives is a RAID 1 with two 4TB WD Se (WD4000F9YZ) drives.
I ran a test where I copied a folder with 350 GB of virtual machines to the virtual drive twice. Then, I used Beyond Compare to do a binary comparison of the two folders on the virtual drive.
For the first 95%, the controller is smart and is using one HDD to read the first folder and the other HDD to read the second folder. According to Task Manager, I'm seeing about 350 MB/s of read performance.
Towards the very end of the test, something happens and the controller is suddenly only reading from one HDD, the performance drops to 10 MB/s and I hear a strange mechanical groaning/growling noise from one of the hard drives. As soon as I cancel the test, the noise stops. It's also important to note that if only one drive was being used but things were otherwise normal, I should be seeing at least 80 MB/s.
If I stop the test and re-start it relatively soon, I can reproduce. If I re-start on the first 95% of data, it's great. If I re-start on the last 5% of data, it's super slow and the noise returns. What's interesting is if I let the system sit for a while and re-start on the last 5%, it's fine.
I've already tried swapping the controller and recreating the virtual drive and re-running and had the same behavior.
Does anyone have any ideas what's causing this? I desperately need to get this system up and running but don't want the controller shredding the drives.
I have an LSI 9270-8i in a new Supermicro X9SRE-F that's running Windows 8.1. One of the virtual drives is a RAID 1 with two 4TB WD Se (WD4000F9YZ) drives.
I ran a test where I copied a folder with 350 GB of virtual machines to the virtual drive twice. Then, I used Beyond Compare to do a binary comparison of the two folders on the virtual drive.
For the first 95%, the controller is smart and is using one HDD to read the first folder and the other HDD to read the second folder. According to Task Manager, I'm seeing about 350 MB/s of read performance.
Towards the very end of the test, something happens and the controller is suddenly only reading from one HDD, the performance drops to 10 MB/s and I hear a strange mechanical groaning/growling noise from one of the hard drives. As soon as I cancel the test, the noise stops. It's also important to note that if only one drive was being used but things were otherwise normal, I should be seeing at least 80 MB/s.
If I stop the test and re-start it relatively soon, I can reproduce. If I re-start on the first 95% of data, it's great. If I re-start on the last 5% of data, it's super slow and the noise returns. What's interesting is if I let the system sit for a while and re-start on the last 5%, it's fine.
I've already tried swapping the controller and recreating the virtual drive and re-running and had the same behavior.
Does anyone have any ideas what's causing this? I desperately need to get this system up and running but don't want the controller shredding the drives.