Inconsistent Storage Speeds on Drives

johnsmith79

Honorable
Feb 13, 2014
2
0
10,510
Anyone had any experience with an issue like this?

System: Quad Core AMD Windows
- I have Two 1TB Drives (WD Black) in a software RAID0 config used for streaming media. There is no concern of data loss, and no offsite backup to cloud). This seems to be working fine with no issues:
WDBlack_RAID0.png



- I also have Two 2TB Drives (Samsung EcoGreen) in a software RAID1 config storing important documents and data and is also backed up off site.

I seem to be having issues with this pair:
1. NO Raid Config:
Samsung_NORAID.png


2. RAID1 Config:
Samsung_RAID1.png


I've tried the following so far:
- Updated BIOS Firmware to the latest
- Swapped out SATA cables
- Swapped out SATA Ports
- Moved to AHCI (which helped with slightly faster access, but still up and down)

Any help would be appreciated!
 

johnsmith79

Honorable
Feb 13, 2014
2
0
10,510


Please review the hdtune charts... the wd raid0 variation is minimal and expected---- looking at my samsung in raid1 or noraid, the variation is around 75MB/sec--- doesn't seem normal to me...