Musings on storage, tuning, backups and more – delivered with a no-nonsense approach. By Dimitris Krekoukias
So, let’s talk about this not-so-hypothetical customer… They have:
They asked me to propose a solution that will back everything up and cross-replicate the backups between the sites. They want to move as far away from tape as possible.
It’s interesting how many storage vendors claim their products are easy to use and, indeed, show nice canned demos full of wizards and elves and whatnot that seem to impress most. There are also grandiose claims of magically reliable hardware and other pixie dust. Ultimately, the reality is that:
What a difference a kernel rev and/or distribution make. If you recall from a previous post, I was unable to complete postmark testing on Ubuntu 9.04 using ext4, and had to recommend against ext4. Now, with the release of Fedora 11 “Leonidas”, a new kernel seems to make a big difference in performance and stability of ext4.
Continue reading “New ext4 vs XFS benchmarks using Fedora 11 Leonidas”
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).
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.