Much has already been written about this imminent acquisition of Data Domain by either NetApp or EMC and, since opinions are like you-know-what, and I have one, here it is… if I ramble, forgive me. I have too much to say and I’m trying to be PC… I wrote and subsequently erased all kinds of stuff that could probably get me in trouble (the more you work with a company the more dirt you uncover, and I have several earth movers’ worth).
Linux filesystem benchmark extravaganza – including Deadline vs CFQ schedulers and ext4 instability
I have some spare time these days so I figured I’d finally test as many filesystems on Linux as I could…
The new ext4 is an option with modern kernels so I loaded Ubuntu 9.04 and tried postmark and bonnie++ on the same partition using various filesystems and switching between the CFQ and Deadline schedulers.
So, what’s the best way to back up VMs?
Backing up VMs seems to be one of the topics nobody can seem to be able to agree on despite a plethora of reading material on the subject – and maybe because of said plethora.
The true XIV fail condition finally revealed (?)
I just got this information:
For XIV to be in jeopardy you need to lose 1 drive from one of the host-facing ingest nodes AND 1 drive from the normal data nodes within a few minutes (so there’s no time to rebuild) while writing to the thing.
Have no way of confirming this but it did come from a reliable source.
A customer recently tried pulling random drives and XIV didn’t shut down and was working fine, but they were from the data nodes.
Why can’t anyone post something concrete here? I’m sure IBM won’t post since the confusion serves them well.
For what it’s worth, the customer is really happy with the simplicity of the XIV GUI.
D
So what exactly is IBM trying to do with the XIV?
By now most people dealing with storage know that IBM acquired the XIV technology. What IBM is doing now is trying to push the technology to everyone and their dog, for reasons we’ll get into…
Continue reading “So what exactly is IBM trying to do with the XIV?”