| Which system would be more beneficial? [message #10784] |
Thu, 01 March 2007 02:50  |
devonblzx
Messages: 127
Registered: December 2006
|
Senior Member |
|
|
Let's say I want to have 10GB of Memory on my node but I can only afford the following configurations, which one do you think would perform best?
Both servers will have the same specs except for:
Server1: 7GB RAM
6xSATAII RAID10 (3GB SWAP partition)
Server2: 8GB RAM
4xSATAII RAID5 (2GB SWAP partition)
Which one would you choose?
I know RAM is a lot faster, but RAID10 is supposed to be a lot faster for writing and copying which is what is needed for a SWAP partition.
Tell me your ideas.
ByteOnSite President
[Updated on: Thu, 01 March 2007 02:51] Report message to a moderator |
|
|
|
|
|
|
|
| Re: Which system would be more beneficial? [message #11356 is a reply to message #10784] |
Tue, 20 March 2007 22:14  |
sPENKMAN
Messages: 7
Registered: March 2007
Location: Arnhem, Netherlands
|
Junior Member |
|
|
Why 6 drives in raid10 and not 4? Are you planning to use an hotspare?
I would go for an good hardware raid10 controller with four 15k 74GB harddisks with as much memory as you can get for your budget.
* Why a hardware raid controller?
Under normal conditions you will have better performance and caching capabilities. When a drives decides to fail you can simply remove it and replace it with a new drive without much hassle. Using software raid you are always depending on you OS which would be a shame looking at the rest of your config.
* Why use 15.000rpm harddisks?
In the system that I control I see quite some harddisk activity. There are loads of read / writes on which a low access time gives you better performance.
I also suggest you mount the filesystem with the "noatime" parameter, this will lower the load on your filesystem noticable.
When you think you have fixed it, something else will fail soon enough
|
|
|
|
OpenVZ Forum
Members
Search
Help
Register
Login
Home
