Dacentec - HP ProLiant 2xL5420 - Disk Speed
I am having some problems with a Dacentec server. I hope someone can help.
recently I ordered an HP ProLiant 2xL5420 16GB 2x1TB. It was slow, so I realized that the write speed of the disk was between 10 ~ 30 MB / s (checked with dd) . I got in touch with the support, to know if this speed was correct, after all this is the cheaper server of them. And you get what you pay for.
They tested the speed inside the system recovery (with dd), and gave 120 MB / s. I asked to reinstall centos 6, maybe it was some update, or config that I did wrong. But, it stayed the same, with a fresh installation, speed of 18.4 MB / s ~ 32.2 MB / s in disk write. Btw, it was installed the imgem they provide, which should have been tested with their hardware
I asked to correct the problem, but they basically told that is my problem, since they are 'fully unmanaged': "Our testing ruled out the hardware as the issue [...] This is a possible issue with the OS / Driver involved, or potentially the specific kernel being used. [...] You may wish to check into potential issues with either your specific kernel or with the current CentOS 6 CCISS driver. "
Has anyone had this problem? CentOS 6 CCISS? Is it easy to solve?
If it is something simple to solve I would probably continue with the server. Any recomendations?