Clustering Simplified Archives - Page 58 of 104

Glossary: Geoclustering

June 14, 2021 by Jason Aw Leave a Comment

Glossary of Terms: Geoclustering

Definition: Geoclustering is the practice of geographically separating high availability cluster nodes for disaster recovery protection.

In a high availability cluster, important applications are run on a primary server node that is connected to one or more secondary nodes in a cluster. If application operation fails on the primary node, cluster software orchestrates failover of the application operation to the secondary node (s). If the primary and secondary nodes are located in the same geographical location, any risks to that location (eg. fire, flood, natural disaster) threatens the entire cluster.

By locating cluster nodes in multiple different physical locations, a geocluster enables application operation to continue through local downtime incidents and natural disasters.

Reproduced from SIOS

Glossary: Fault Tolerance

June 10, 2021 by Jason Aw Leave a Comment

Glossary of Terms: Fault Tolerance

Definition: Fault tolerance is a level of protection in a computing environment used for mission-critical applications that require >99.999% availability and RTO and RPO of near zero. Fault tolerant systems require an investment in redundant hardware, software, networking and other systems. In these environments, two or more systems operate synchronously – performing compute functions simultaneously, so that in the event of a hardware, software, or network failure, application operation will continue without interruption or dropped transactions.

Reproduced from SIOS

Glossary: Failover Cluster

June 6, 2021 by Jason Aw Leave a Comment

Glossary of Terms: Failover Cluster

Definition: A failover cluster is a group of servers that are configured to work together such that if one of the servers, or nodes, fails, another node in the cluster can take over operation of its application without any downtime to deliver high availability.

Reproduced from SIOS

Changing A Drive Letter With Powershell

May 29, 2021 by Jason Aw Leave a Comment

Changing A Drive Letter With Powershell

Here is a short but sweet post on how to change the drive letter of a partition. Despite using my best Google skills I couldn’t find an example that was doing it for me. I rolled up my sleeves and just figured it out on my own. I hope this helps someone out there.

Set-Partition -DiskNumber 4 -PartitionNumber 1 -NewDriveLetter X

As long as you know the DiskNumber and PartitionNumber this will immediately change the drive letter of the partition you specify.

You may also need to import the Storage module into Powershell before you can do this.

Import-Module -Name Storage

Let me know if this helped you

Glossary: Disaster Recovery Software

May 28, 2021 by Jason Aw Leave a Comment

Glossary of Terms: Disaster Recovery Software

Definition: In the event that a sitewide disaster or serious human error damages business-critical technology systems or infrastructure, disaster recovery procedures restore operation of business-critical applications and processes. Disaster recovery software replicates or moves important data and applications to a location that is geographically separated from the production location so that,in the event of a sitewide or regional disaster, it can be restored. Learn more about Disaster Recovery.

Reproduced from SIOS