That's not localhost. Removing it, you might face to trouble when connecting to mySQL server. Check with your host how they setup their system,...
I am not running Plesk, but from their site, it seems 256MB is minimum. If your OS is not optimized, you might need more RAM. Or you can switch to...
It depends on your VPS load, the CPU and RAM limitation. How many RAM do you have? Equal share CPU or dedicated?
I doubt there is any cache there. When the outage happened, did you try to make a trace to your server? How did they be fixed?
If you are using wordpress, don't need to go with Windows VPS. A Linux VPS will be better. How do you define "lot of searches done on it"? It...
Unmanaged means you are the person to be in charged of server management, involving to many tasks such as software installing, updating, checking...
Do you have any robots.txt file to prevent SE robots?
When I visited your current vendor website, all the disks they list there are sata. 80GB sata has few years old already. You might want to ask...
I would not suggest raid0 either. Raid1 is just duplicated, not helping performance. Raid 10 has 2 mirrors vs a single mirror in Raid5. Also,...
raid-10 requires 4 disk drives at least. With a good raid card such as from 3ware or Adaptec.
In case you are working with many small files, I believe raid-10 disks array will really help. However, as said, it will cost more, comparing to...
I would like to know how many users you can get at the same time? It is much more important than the total users per month.
You can view result, and check around sda, sdb lines. It should have drive model around. KH's hybrid is limited at 1GB RAM. I have heard that...
Is this from cPanel? I am not sure how it shows in cPanel, it's long time to use cPanel. However, you can login your server in ssh, try command...
Is that SATA disk? Single disk will be your bottle-neck then, not the CPU. Upgrading to SAS/SCSI if you still want to play with single disk, or...
Separate names with a comma.