On 2/3/2015 10:00 AM, John R Pierce wrote:
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.
So , You dont think that any configuration changes like increasing the
number of volumes or anything else will help in reducing the I/O wait time ?
Thanks
Jatin
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