Release Notes

48 Analyzing Dell PS Series Storage with SAN Headquarters | TR1050
The example below shows a situation where choosing the more reliable RAID policy has little impact on the current
IOPS. The difference between the current IOPS and the possible maximum IOPS allows for headroom even considering
the maximum IOPS for RAID 6 will be less than the RAID 50 policy.
Figure 34 RAID Policy change improves the reliability and has little effect on the performance
3.7 Example 7: PS Series hybrid performance
The PS Series offers several models to meet the business, performance and budget needs. One high performing model
is known as a hybrid which offers high performance SSDs in combination with large capacity NLSAS drives intended for
less active data. The architecture uses an advanced page optimization methodology which exploits the faster drives to
accommodate the performance needs while utilizing larger drives for additional capacity.
The example below is from the PS Series PS6610ES hybrid array that includes both SSDs and NLSAS. Notice in the table
below the graph how the bulk of the IOPS are processed by the SSD drives.