Some storage vendors promise 100% uptime - never any downtime for scheduled activities such as microcode upgrades,...
reconfigurations, etc. What do you think about his claim?
I don't believe that there is any such thing as 100% uptime. I also believe that it is irresponsible of vendors to claim that there is. Can they categorically guarantee that their firmware/software/microcode is absolutely bug-free? I doubt it. Are its disks in a single container (array/box)? If so, then surely an external event such as a water leak or a ceiling collapse would bring the box down. An extended power failure will almost always cause downtime.
What you'll find is that vendors who do claim 100% are forced by its (wise) attorneys to put all sorts of exclusions in its contracts. Read them carefully. Remember, too, that your system consists of many components of which the storage subsystem is only one. The only availability metric that matters is what the users see. Will users see 100% uptime? Not in this lifetime.
Evan L. Marcus
Editor's note: Do you agree with this expert's response? If you have more to share, post it in our .HcX6azlxeJg^0@.ee83ce2!viewtype=&skip=&expand=>Administrator Central discussion forum.
Dig Deeper on Data management tools
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.