Load balancing, A process that distributes processing among multiple nodes., Active/active, Two load balancers working in tandem to distribute network traffic., Active/passive, Two load balancers with one actively working and the second in listening mode to take over if the first one becomes unavailable., Power scheduling, Used to configure an active redundancy. This sends power to networks when a power facility goes down. Power scheduling prevent total loss of power during catastrophic events., Virtual IP (VIP), IP address that is not assigned to an endpoint., Geographic dispersal, The use of multiple locations to store data to mitigate downtime due to location., Multipath, A fault-tolerance technique that gives multiple physical paths between a CPU and a mass-storage appliance., Uninterrupted power supply (UPS), A stand-alone bank of batteries that allows for the graceful shutdown of network appliances when power goes out., Managed power distribution unit (PDU), Is a rack-mounted unit that distributes power on a large scale such as a data center., RAID 0 striping, breaks data into units and stores the units across a series of disks by reading and writing to all disks simultaneously., RAID 5 striping with parity, Combines disk striping across multiple disks with parity for data redundancy., RAID 1 mirroring, Stores data to two duplicate disks simultaneously. If one disk fails, data is present on the other disk and the system switches immediately from the failed disk to the functioning disk., RAID 0+1, Multiple disks are striped, creating a single volume. A second set of disks is then added to mirror the first set., RAID 1+0 mirroring a striped set, Multiple disks are configured into two mirrored arrays., Hardware clustering, connects a group of independent computers to increase the availability of applications and services., Convergence, Is the process that cluster members use to reach a consistent state., Elasticity, Is the level of difficulty involved when removing nodes from the data store., Failover cluster, Is a group of computers configured with the same service., Round robin, There is no priority for selecting a member. Each member receives an equal share of requests portioned out in a circular order., Affinity, When it is desirable to send all service requests from a user to the same cluster member, and based on the IP address of the client or the class C address space of the client IP address.

Redundancy 12.7

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?