What are your views about DR focused software products (i.e. Veritas, Legato/Octopus or maybe DoubleTake) vs. hardware-based replication (i.e. controller-based on EVA or Clariion)? I presume that the software solution is more prone to error and therefore less reliable due to the nature of software and human error but I am very interested in your point of view.
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
I'm not sure why you'd conclude that software products are more prone to human error than hardware products. It's all software, whether the software is written by Veritas (my employer), EMC, Legato, EVA or someone else, it's all software. The real difference is in where the software runs. Does it run on the server or on a disk array? And, all software is prone to bugs, and most software configurations have complexities.
Both hardware- and software-based solutions protect data and generally do so equally well. Hardware replication can send data between any two devices that can speak to the disk array, while software replication allows data to be sent between just about any type of storage, even if mixed vendors are involved.
I have already written both answers in this space and columns about synchronous vs. asynchronous replication, the trade-off between performance and data currency, and how not all hardware replication can do asynchronous replication while maintaining data integrity. I have also written about my experiences with replication performance and how, contrary to what you might think, software replication tends to outperform hardware replication in a fair fight.
Evan L. Marcus
Editor's note: Do you agree with this expert's response? If you have more to share, post a comment below.
Dig Deeper on Remote data protection
Related Q&A from Evan Marcus
Storage expert Evan Marcus compares software and hardware RAID and outlines the benefits and drawbacks of each.continue reading
This expert answer explains the purpose of creating LUNs and details reasons for creating multiple LUNs.continue reading
This advice details the hardware and software requirements for setting up two data servers in fail-safe cluster mode for high availability.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.