The lab environment consisted of four PowerFlex rack R640 servers. Each physical server included two Intel Xeon Skylake 14-core processors, 384 GB RAM, and ten 1.92TB SSDs. We created one PowerFlex protection domain that contains 4 SDSs. We have one storage pool that contains a total of 40 physical storage devices in a protection domain. We created PowerFlex volumes over the virtualization layer. Access to these volumes is distributed across the cluster. PowerFlex maintains the user data in a RAID-1 mesh mirrored layout. Each piece of data has two copies (primary and secondary) stored on two different server (SDSs). The copies are evenly distributed across the storage devices. This enables the system to maintain data availability following the failure of storage media or servers.
The following PowerFlex GUI dashboard graphic shows the PowerFlex rack cluster and storage information:
Figure 5. PowerFlex GUI dashboard