Hello, maybe somebody might have some input on a problem I'm encountering. Here are my server specifications: Chassis: Supermicro SC825TQ-R700LPB Motherboard: Supermicro X7DB3 CPU: Intel Xeon 5150 RAM: 8GB Controller: LSI SAS9211-8i HBA HDD: 8x 2TB HDD's Boot device: HP 4GB USB Here are the symptoms: System posts and the LSI controller detects all 8 HDD's. FreeNAS boots properly and allowed me to configure the onboard two gigabit ethernet ports as LACP. I login to the web GUI and attempt to create a volume but find FreeNAS only recognizes 7 of the 8 HDD's (da0 - da6). Four of the 8 HDD's were previously used in another server of the exact same specifications running Server 2008 R2 so I wiped the drives clean before proceeding with the FreeNAS configuration, the remaining 4 HDD's were new in box. Here is what I have tried so far: I removed the 4 HDD's along the top of the server to see if FreeNAS would detect all 4 of the HDD's in the lower bays of the server. Only three of the HDD's would detect in the lower bays. I shutdown the server and swapped the drives in the lower bays with the drives I previously removed from the top bays (and left the upper 4 bays empty), boot up the server and still only 3 of the 4 drives in the lower bays detected. At this point I assumed perhaps a cable issue, checked to verify none had become unplugged and all were secure so I replaced the SAS cable and the same problem persisted. At this point I thought it may be an issue with the SAS backplane even though Server 2008 R2 detected disks in all 8 bays. I have a half dozen servers of the same specification so I grabbed one off the shelf that had also been previously configured as a 2008 R2 server with 8 HDD's and swapped my HDD's into the server and installed my USB stick containing my FreeNAS install - boot the server up and only 7 of the 8 HDD's were detected again. I swapped a series of 4 HDD's at a time into the lower HDD bays and it only detected 3 of the 4 HDD's as it had before in the previous server. I don't believe the issue to be related to my motherboard, controller or HDD's given the troubleshooting I have done thus far. I have found posts here of others using the same LSI controller as me with 8 drives connected as well, so I don't believe it to be a problem with that. I attempted the latest firmware for the LSI controller as well and also updated the BIOS on the motherboard to the latest. Does anybody have any ideas? I was hoping to turn a bulk of these servers I have sitting here into FreeNAS servers if I can manage to get all 8 HDD's to detect. Any and all help is greatly appreciated!