Hey Everyone
So I have a server with a raid controller with 8Gb cache onboard and some nearline SAS 7200 (yes i know they are not the best drives) in raid 5.
Server is an ibm SR550
The max disk performance sustained is about 150mb/s read and write.
My problem is that when I restore a 300Gb database to my sql VM the IO delay shoots through the roof and all the other VM's start to become non responsive.
This machine comes with a M.2 PCI-E interface slot and I'm thinking of installing a 250 or 512gb SSD there and setting it up as the LVM cache drive but I'm worried that once the cache is full on that the io delay will just appear again.
Is there anything I can do to make sure a single vm doesn't kill all the others?
So I have a server with a raid controller with 8Gb cache onboard and some nearline SAS 7200 (yes i know they are not the best drives) in raid 5.
Server is an ibm SR550
The max disk performance sustained is about 150mb/s read and write.
My problem is that when I restore a 300Gb database to my sql VM the IO delay shoots through the roof and all the other VM's start to become non responsive.
This machine comes with a M.2 PCI-E interface slot and I'm thinking of installing a 250 or 512gb SSD there and setting it up as the LVM cache drive but I'm worried that once the cache is full on that the io delay will just appear again.
Is there anything I can do to make sure a single vm doesn't kill all the others?