On 2/2/2015 8:11 PM, Jatin Davey wrote: > disk 252:1 | 0-0-0 | 9XG7TNQVST91000640NS CC03 | Online, Spun Up > disk 252:2 | 0-0-1 | 9XG4M4X3ST91000640NS CC03 | Online, Spun Up > disk 252:3 | 0-1-1 | 9XG4LY7JST91000640NS CC03 | Online, Spun Up > disk 252:4 | 0-1-0 | 9XG51233ST91000640NS CC03 | Online, Spun Up > End of Output ************************** > > Let me know if i need to change or configure anything else to make the > I/O a bit faster than what it currently does. I cannot go in for using > SSD's due to budget constraints. Need to make the best use of the SATA > disks that i have currently. so, you have 2x2 ST91000640NS http://www.seagate.com/products/enterprise-servers-storage/nearline-storage/enterprise-capacity-2-5-hdd/ those are "Nearline" disks, 7200RPM. They are intended for bulk secondary storage, archives, backups and such. you said you have a number of virtual machines all attempting to access this raid10 at once? I'm not surprised that it is slow. You're probably limited by random IO/second, that raid likely does around 250 random operations/second. share that between 6-7 virtual systems and if they are all doing disk IO, they are going to slow down each other. -- john r pierce 37N 122W somewhere on the middle of the left coast