11 The 8D rear panel is very similar to this diagram when rack mounted, but asingle power supply. Power Supplies – One power supply in the TerraBlock 24D and 24EX, chassisis replaceable while the unit is running. The unit will run as long as at least 2power supplies are active. The 8D does not have a redundant power supply, andrequires a power supply or chassis replacement through your reseller if failureoccurs. Fans – The high-speed internal fans maintain an ideal operating temperaturewithin the enclosure. Fan units can be removed while the TerraBlock is running ifa replacement is necessary. Consult support@facilis.com for fan replacementprocedure. VGA – The VGA port is available for monitoring the server locally; attaching amonitor (not supplied) to the server is necessary for software installation andtroubleshooting. A standard 15-pin VGA monitor cable is supported. Ethernet – The Ethernet ports are supplied for network access to the unit,communication to the optional Fibre Channel switch, and when used inconjunction with the Facilis Shared File system, access from Ethernet clients tothe TerraBlock volumes. Direct Ethernet connectivity can be configured using asingle Gigabit Ethernet port on the server. A combination of 2 or more GigabitEthernet ports (additional Ethernet hardware may be added) can be teamed foradditional bandwidth and performance. See Fibre Channel/Ethernet Slotsbelow. Keyboard/Mouse – The keyboard/mouse ports are available for direct control ofthe server. Standard PS2 or USB keyboard and mouse are supported but notincluded. SAS Controller Slots – The SAS controller cards for the server media harddrives use slot 1, 3 and 4 on the 24D and 24EX and slot 4 on the 8D (with latestTerraBlock models). Slots are numbered starting from the right if standing at therear of the unit. Fibre Channel/Ethernet Slots – The number and type of Fibre Channel andEthernet host bus adapters (HBA’s) may vary depending on your configuration.There is a maximum of 4 additional HBA’s that can be added. This can be all FibreChannel HBA’s (up to 8 direct connect FC ports), all 10Gbit Ethernet (up to 8direct connect 10Gbit Ethernet ports) or a combination of both. This may alsoinclude 1G Ethernet hardware. Some HBA’s may need to be removed to free aslot if the server is fully populated. PSU Alert Mute Button (24D, 24EX) – The enclosure sounds an alarm beepwhenever it detects a power supply or fan failure. The Mute button stops thealarm until the next error occurs. Pressing the Mute button only silences thealarm—it does not correct the condition that caused it.