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SSD DC S3500 Workload Characterization in RAID Configurations
White Paper December 2013
14 329903-001US
6.0 RAID 5
6.1 Test System Specifications
The system used for RAID 5 testing was identical to the system used for RAID 1 testing
except the following changes:
• 2x Intel Xeon E5-2680 8-core CPUs (2.7 GHz)
• 3x up to 8x Intel SSD DC S3500 Series 800GB drives
Note: For this test, 800GB drives were used. The rated performance of the Intel SSD DC S3500
Series drive in 800GB, 600GB, and 480GB capacities are nearly identical, per internal Intel testing.
6.2 Intel SSD DC S3500 Series in RAID 5 Performance
Characterization Data
This section provides performance characterization data for the Intel SSD DC S3500
Series in RAID 5 configurations.
To establish baseline expectations for IOPS, the Intel SSD DC S3500 Series 800 GB
drives were evaluated in RAID 5 sets of 3, 4, 5, 6, 7 and 8 drives. The data collected
was based on a different mix of read and write random and sequential workloads. Since
higher queue depths can sometimes yield higher IOPS, queue depths of 1, 2, 4, and 8
per drive were used in the test setup. Multiple transfer sizes were tested, however, only
selected data is presented here. All tests were done using the entire Logical Block
Address (LBA) range of the virtual drive. Tests were repeated at least twice to validate
results.
Drives were prepared using IOMeter to fill the entire user area of the drive with data.
Then, the first workload of each type (Sequential or Random) was 100% write
performed for 120 minutes. Each subsequent workload was run for 12 minutes, with
average IOPS collected over the final 10 minutes of the run.
The following figures show different levels of performance for a selection of
configurations.
Note: The scale of the IOPS charts is variable in order to clearly show the change as drives are added.