As I reported in the previous post there are some interesting things going on when we look at btrfs and xfs. The first thing that I want to say is that even with the rapid changes of sgi, Rackable, sgi of late the XFS file system is still going strong. In fact they have been providing regular updates on xfs.org since Summer of 2008. IMHO this is great as it shows there is a continued venerable alternative to ext3 and ext4 — the reality is that ReiserFS and JFS are largely dead and btrfs is on the rise, but still not stable.
I ran across this today on Slashdot and Network World. more
I recently ran across this post on Storagezilla. Well I have to say after having looked at their approach to file tiering I have to say nice try. As I’ve talked about in the past I was there when an external Acopia (now a product of F5) reference customer basically stated they would throw out Acopia in a second if a NAS vendor would put file system virtualization and migration into the NAS device. So with the approach that EMC has taken a customer would need to buy an entirely new product to perform the data movement off of the Celerra.
Recently, my competitors have asserted that V-Max has gotten under both mine and my HDS colleagues skin. Well last time I checked the only thing under our skin was flesh and blood just like Barry. I think that what Barry is talking about is the fact that EMC has copied Hitachi on several occasions and we appear mad about that for some reason.
Recent reports from the Wall Street Journal point to Steve getting a liver transplant. If true I wish Steve well and speedy recovery. I think that the Apple customer base, competitors and detractors have all had their fill of rumors and discussions about Steve’s health. Well knowing about HIPPA and understanding that medical privacy is important getting this information or any of it in the wild is a hard task. From reading the article and others related to it Steve had to go to two different medial institutions, being that is the case, I wonder how his charts, studies, and general files have been transfered from one place to another, Fax machine, by hand, by FedEx? What do you think?
The last post I had on a similar subject was the visualization of the Linux kernel. Well newly added to this class of explorations is a visualization of the Linux file systems by Răzvan Musăloiu-E. more
For reference the definition of Wikipedia for Thin Provisioning can be found here: http://en.wikipedia.org/wiki/Thin_provisioning. Practically speaking the decision to defer the purchase is something that I want to explore. Common wisdom and research shows that disk price erosion is somewhere between 30% to 40% annually. Further there is still research showing that on open systems in network storage (SAN and NAS) based infrastructures have utilization rates are a little higher than 50%, while allocation rates are nearly 100%. When Thin Provisioning, like Hitachi’s Dynamic Provisioning, technologies are taken together with these trends there is a simple effect that I’d like to bring up namely that Thin Provisioning enables delayed capacity purchases allowing users to take advantage of the capacity erosion curve. Has anyone thought about this before?
Since I’ve been talking about commodity versus novel implementations as well as innovation of late something recently caught my eye. Notably a purist debate on how Fedora will no longer include the TomBoy application and folks are equally skeptical about Mono.
As a part of ongoing architecture discussions, the concept of commodity has come up. First I would like to start with a few questions on the point. more
