LSI 9460-8i vs 9560-8i

[Ron Kelley]

Greetings all,

Looking for any real-world experience with either the LSI 9460-8i or LSI 9560-8i with multiple NVMe drives in RAID-5.

According to LSIs documenation (Product brief for the 9500 controllers):

Based on the Broadcom SAS3916 and SAS3908 eight-lane host PCIe to SAS/SATA/PCIe RAID on Chip (RoC) controller, the 9500 series MegaRAID adapters are the first RAID adapters to offer both PCIe Gen 4.0 host and PCIe Gen 4.0 storage interfaces. PCIe Gen 4.0 enables these adapters for high bandwidth by delivering twice the bandwidth and 75% more IOPs

However, it does not say how much faster (if any) the 9560 is compared to the 9460 in RAID configurations. My suspicion is their performance numbers are coming from the PCIe 4.0 bus vs the 3.0 bus and does not take into consideration RAID functionality.

My use case is simple: 3x Intel P4610 NVMe drives in a RAID-5 configuration.

Thanks for any feedback.