Tattoo Power Supply Components

The computer tattoo power supply is a closed independent component installed in the main chassis. Its function is to convert alternating current into stable direct current such as 5V, -5V, +12V, -12V, +3.3V through a switching tattoo power transformer. It is used to supply system components such as system version, floppy disk, hard drive and various adapter expansion cards in the main chassis. In layman's terms, if one tattoo power supply breaks down, another backup tattoo power supply takes its place. Hardware availability can be enhanced by providing battery backup for nodes and disks. HP-supported uninterruptible power supplies (UPS), such as HP PowerTrust, protect against momentary power outages. The disk and power supply circuit should be connected in such a way that the mirror copies are connected to different tattoo power supplies. The root disk and its corresponding node should be powered by the same tattoo power circuit. In particular, the cluster lock disk (used as an arbiter when reorganizing the cluster) should have a redundant power supply, or it can be powered by a power supply external to the nodes in the cluster. Your HP representative can provide detailed information about the cluster's power, disk, and LAN hardware layout. Many disk arrays and other rack-mounted systems currently contain multiple power inputs. They should be deployed with different power inputs on the device connected to separate circuit devices with two or three power inputs, so that, in general, , as long as no more than one circuit fails, the system can continue to operate normally. Therefore, if all hardware in the cluster has 2 or 3 tattoo power inputs, it is required to have at least three independent circuits to ensure that there is no single point of failure in the circuit design of the cluster.