My current configuration is:
Dell PowerEdge R510 with PERC H700 RAID controller. I have 2 x 300Gb 15k disks and 6 x 600Gb 15k disks.
The 2 x 300Gb disks are on RAID1 for the OS
The 6 x 600Gb disks are on RAID10 for the DATA
If I add 4 x 600GB 15k disks on RAID10 would I see a performance drop in I/O on the other RAIDs?