Hi, We have just purchased a new DELL R730 to act as a disaster recovery host for Veeam Replica's. At the moment this is on site while we complete the initial replica's but will eventually be moved off site.
We are experiencing a very,very slow throughput for the initial replica job and have confirmed this is down to the RAID array which I find rather odd. The server has 4 x 4TB nearline SAS disks 7.2k in a RAID 5 and im replicating to this server at approximately 10-13mb with a new job. If I reconfigure the RAID array and create a single RAID1 mirror using two of the same drives im getting throughput of approximately 70-80mb on a new job.
Surely a raid 5 array cant have that much I/O degradation and slow down the job by 70-80% ? The raid card is a h730
any advice gratefully received to get better throughput on my RAID 5