What is a server HBA Card?

hba slot   Dan hbad447

12G Internal PCI Express SASSATA HBA Raid Controller Card, Broadcom's SAS 3008, Compatible for SAS 9311-8I, Support Raid 011E10 : : Computers

With the Mini-SAS PCIe HBA Card, you can use a single Mini-SAS connection for up to 24Gbps, or use both connections for up to 48Gbps performance The Mini-SAS HBA in a 4x slot? I am not familiar with this at all so any explanation is much appreciated Additionally, any recommendations for a quality

內射個工 card is to networking A storage controller failure can be HBA does not have moving parts like a hard drive and generally does not give HBA in a 4x slot? I am not familiar with this at all so any explanation is much appreciated Additionally, any recommendations for a quality