Solutions Review, 10/18/2018
Laz Vekiarides is the Chief Technology Officer and Co-Founder of enterprise storage and data protection solution provider, ClearSky Data. Solutions Review had the opportunity to speak with Vekiarides about the challenges of storing hot data on premises. During our conversation, Vekiarides shed light on what the best way to store hot data is, as well as what the future of hot data storage holds. With five years of experience at ClearSky Data, Vekiarides provides insight on the subject.
What is the difference between hot and cold data?
For us, hot data is all the data a customer would access over the course of a week. It’s a small percentage of the total data stored, usually anywhere from 7 to 12 percent of what’s provisioned for primary storage for a particular workload. For example, when we performed an analysis for one of our first customers, they had half a petabyte of storage and, on average, were accessing just 5 to 7 percent of it.
Cold data is either never accessed or is accessed very, very infrequently. Often, cold data must be stored for compliance reasons, but data can also include backups, archives and old files, all of which are very unlikely to ever be accessed.
Use cases for cold data storage are almost always driven by cost because people are usually willing to wait for cold data, especially since the law gives you a few days before required reporting. That said, we have one customer who has a radiology archive, and that data can quickly go cold. But in the event a radiology lab needs to access an old image, they can’t wait several days for it. Cold data doesn’t always mean the same thing for every customer.