Posted on

Company Overview: HYCU

I had the opportunity to meet with HYCU today, the sixth on the IT Press Tour #31. Simon Taylor, CEO, led off the “Leverage to Scale” presentation with an overview of where the company has been providing purpose-built back-up and recovery for Nutanix to growing to provide solutions for the rest of the cloud. They currently have more than 1000 customers in 52 countries and are as close to Google Cloud Platform (GCP) as they are Nutanix. 

While Veritas was built for Unix, Commvault for Windows, Veeam for VMware, HYCU is being built for multi-cloud. As budgets moving to lines of business (LOBs) with more control and power, hybrid-multi-cloud infrastructures are proliferating with data protection being siloed and mired in the past.

Posted on

MySQL Tutorial: Understanding The Seconds Behind Master Value

In a MySQL hosting replication setup, the parameter Seconds_Behind_Master (SBM), as displayed by the SHOW SLAVE STATUS command, is commonly used as an indication of the current replication lag of the slave. In this post, we examine how to understand and interpret this value in various situations.

Possible Values of Seconds Behind Master

The value of SBM, as explained in the MySQL documentation, depends on the state of the MySQL slave in general, and the states of MySQL slave SQL_THREAD and IO_THREAD in particular. While IO_THREAD connects with the master and reads the updates, SQL_THREAD applies these updates on the slave. Let’s examine the possible values of SBM during different states of the MySQL Slave.