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Data Availability Solutions
Data Availability revolves around the timeliness of Data. In other words: when is data available to the people, processes or applications that require it and what impact it has if not. Solutions in this area are closely related to and typically go hand in hand with the Recovery Time Objectives (RTO’s) and Recovery Point Objectives (RPO’s) defined for certain data sets in the organization and solutions in the Data Protection area. Typical Data Availability solutions are:
- High Availability (HA) and Clustering solutions
- High Availability really refers computing environments where no downtime is allowed and the RTO=0 or, in other words, an application, data or resource required of being available 24x7. Clustering is a (software) technique where multiple servers emulate to be one and cluster members take over when one or more servers/applications fail. Workload can also be shared amongst servers via load-balancing. Clustering can get complicated in so-called N:M networks with load-balancing enabled.
- Fault Tolerant Servers
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Whereas clustering is primarily a software/application technique, hardware vendors, trying to assure uptime, have looked to build redundancy in the hardware. These hardware solutions typically revolve around building redundancy in the hardware by duplicating parts like power supplies, backplanes, cpu’s, etc.
- Life Cycle Management
- A different approach on how to look at availability of data is to look at this requirement in time. Typically the need for data to be (highly) available diminishes over time and the requirements for speed and access time, hence kind, of storage changes as well.
- WORM (Write-Once-Read-Many)
- Another approach to looking at the need for data in time and securing its availability is a method called WORM. Typically data is stored on random accessible media that allow writing to the same area many times over. Write Once Read Many (WORM) technologies essentially guarantee a failsafe method to prevent compromise of the data when it was originally written and therefore guaranteeing the integrity of the data for the future. WORM typically is applied through writing to Magneto-Optical disk but recently technologies have emerged where WORM capability is added to regular Magnetic tape.
Click here to contact Zibiz about our Data Availability solutions
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