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I am ordering new hardware for the growing cacti install.
I will have 8- 146GB 15K RPM Serial-Attach SCSI Hard drives.
What is best way allocate these drives for performance while keeping some redundnacy.
It does not look like space will have to be a consideration, just how to divide up the spindles.
I am doing one minute polling of 350 host and 12,000 in ~25s
I expect this to almost double in the coming 12 months.
Also, right now there are only and handful of users logging in but soon we will be allowing access to 150 or so.
Currently running ~25k data sources in 45 sec on a two year old dual xeon w/ 2GB ram and slow 2.5" local disks.
Use latest Linux kernels supporting fadvise, latest rrdtool, lots of memory. Fast disks are fine, but I suspect it won't exceed a boost greater than a factor of 2
Reinhard
Thanks, the new server will have lots of RAM and the latest kernel.
I was wondering if anyone has ideas as to how to use the available drives.
Like a seperate set of disks for the rra directory or disks just for where mysql will reside?
