We have a Proliant ML350e Gen8 server. It has been configured with an extra p410 controller in Slot 4. We have connected two MM1000GBKAL"HP 1TB 7200RPM SATA 6Gbps Quick Release MidLine 2.5-inch Internal Hard Drives" in a RAID1 configuration. There is no battery backup for the controller.
The HP Array Configuration Utility reports that the negotiated rate of both drives is SATA 1.5Gbps.
As is my understanding the p410 is limited to 3Gbps SATA but why would the drives work at 1.5Gbps and not a higer rate?