Hi Rodrigo,
The disk groups are not configured as per best practice recommendations. From MSA best practices guide pages 18 and 19:
https://www.hpe.com/psnow/doc/a00015961enw?jumpid=in_lit-psnow-red
For optimal write sequential performance, parity-based disk groups (RAID 5 and RAID 6) should be created with “the power of 2” method. This method means that the number of data drives (nonparity) contained in a disk group should be a power of 2.
I have seen significant sequential write performance improvement when disk groups are configured as per this method.
I dont think the sequential write throughput mentioned in quickspecs could be achieved with single disk group.
MSA 2050 RAID 5 Hard Disk Drive (HDD) sequential results: Dual Controller configuration, (72) 15K HDD, 9 drives
per disk group, 4 disk groups per pool, 4 volumes per pool