Modern server platforms increasingly integrate storage controllers to reduce cost and power consumption. The HPE Smart Array S100i SR Gen10 is a embedded in the HPE ProLiant Gen10 server line. It is accessed via the S100i driver, which enables the operating system to utilize the controller’s RAID functions.
RAID 5 on S100i incurs high CPU overhead due to software parity calculation. Not recommended for write-intensive workloads. hpe smart array s100i sr gen10 driver
The S100i relies on the server’s main CPU to process RAID calculations. While modern CPUs are powerful enough to handle this with ease, it introduces overhead. In I/O intensive environments—such as heavy database transactions or high-throughput virtualization hosts—the S100i cannot compete with dedicated hardware controllers that have their own RAID CPUs. RAID 5 on S100i incurs high CPU overhead
: It supports 6Gb/s SATA speeds and uses system memory as a read cache since it lacks its own physical cache. While modern CPUs are powerful enough to handle
The S100i is a "Software RAID" (SW RAID) solution. This means the driver performs the RAID calculations rather than a dedicated physical chip.