I have an IBM server 3650 M2 with Megaraid M5015 with SLES 11 SP1. We are having performance problems, it seems that are problems with i/o subsystem, but not sure. We have same configuration on other environment with vmware or Intel server and is working perfect, only difference is hardware
At this moment we are upgrading to latest versions of firmwares, drivers, SLES SP2... but we want to optimize this server for optimal performance, because is a crtical server with a database and about 500 concurrent users.
M5015 has 2 SAS (RAID 1) disk with a hotspare and 5 SSD (RAID 5) disks with hotspare, but our configuracion of virtual drive has:
- Write policy: Write back
- Read policy: no read ahead
- Disk Cache policy: False
- io policy: direct
We have applied some SLES recommendation about OS, and upgraded to SP2
IBM support recommenden to upgrade latest firmware/drivers, but they asked that performance problems are not supported by IBM? Anybody can help to give some recommendations or best practices for optimal configuration with megaraid M5015 for these RAIDs? Any tools to make some performance test and compare result before and after?
Second question, what is the battery life?