Linked by Thom Holwerda on Tue 9th Oct 2007 22:06 UTC, submitted by irbis
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Member since:
2007-07-27
BrandZ are very lightweight. 50 of them or so, takes like 3% CPU utilization together. Each takes 40MB RAM and shares RAM. One guy started 1000 BrandZ in 1GB RAM.
Also with ZFS you can snapshot one master Linux (or different versions of Linux), and then deploy writable copies in one sec each. You can install Oracle version X in one copy, Oracle version Y in another, etc and each copy just saves the differences, in a dynamical growing file system with ZFS. Everything is read from the master Linux snapshot installation. If you wish, you can do a snapshot on combination Oracle + Linux too. This way you can deploy a fully tested Oracle zone in one second if the need should arise. Also with Apache, or other software. Very lightweight. Each BrandZ have a unique IP adress too. And safe too, you cant break out from the zone. You can give root access to users, and if they mess up, you just delete the ZFS file system and deploy another copy in 1 sec. The master snapshot never gets touched.
Of course you dont have to stick to Linux with BrandZ. Pure Solaris works fine too. Solaris + Oracle in one second. In future FreeBSD too. etc.
The full power comes from BrandZ + ZFS. And you can toss in DTrace to see exactly whats going on in the system.
People just dont get it. They think ZFS is another ordinary file system, albeit newer. The same with BrandZ. The Unix philosophy is to have one tool doing well, and the power comes from the interaction. ZFS and BrandZ and DTrace follows that principle. People that have failed to grasp that principle thinks that there is nothing special with unix grep and pipe and so. They think a monolithic application works as well. They should try it out, themselves to see all the goodies. Often they are Windows people.