Finally, It’s just arrived the new Rack Case for my new server.
The case is a X-Case RM 206 HS with 6 Hot Swap SATA3 bays.
It can mount standard ATX PSU or 2U PSU, and the quality is great!
These are some pics about it:
On my server, i need to backup my data and my databases about 2/3 times at day.
First, i compress folders with TAR, then i copy it with rsync to other servers in LAN.
Files are from 500MB to 2GB, so the transfer operation give my a heavy impact to server perfomance, with a Load from 5 to 7 (when the max should be 4 with my hardware) and sometime apache or mysql crash.
By default the Linux OS has a very efficient memory management process that should be freeing any cached memory on the machine that it is being run on. However when it comes to Cached memory the Linux OS may at times decide that the Cached memory is being used and is needed which can lead to memory related issues and ultimately rob your server of any potentially free memory. To combat this you can force the Linux OS to free up and stored Cached memory.
It’s really very tough job for every System or Network administrator to monitor and debugLinux System Performance problems every day. After being a Linux Administrator for 5 years in IT industry, I came to know that how hard is to monitor and keep systems up and running. For this reason, we’ve compiled the list of Top 15 frequently used command line monitoring tools that might be useful for every Linux/Unix System Administrator. These commands are available under all flavors of Linux and can be useful to monitor and find the actual causes of performance problem. This list of commands shown here are very enough for you to pick the one that is suitable for your monitoring scenario.