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This article is riddled with fundamental inaccuracies. Most of this data has been available for over an year. Very poorly researched.
We are using zones here, we have only problems.
- unability to patch zones (we are using u3)
- performance problems (thanks to processes block in kernel mode).
- and now the servers reboot itself in u5
Solaris 10 is the most crappy release from Sun. You are taking Sun's blueprints/site like a reliable source. But it's only some ads from Sun, in fact the reality is by far different.
On the other side AIX and LPAR are working like a charm... Edited 2008-10-15 16:25 UTC
Thats interesting, as where I work is a primarily IBM site, and pSeries/AIX is the buggiest P.O.S I've ever worked on.
LPAR's are not totally separate, I've seen DLPAR operations on one LPAR kill another due to memory conflicts. We frequently see Power5 and 6 boxes drop when they suddenly offline 8gb of RAM, or decide to offline a cpu for laugh.
The IBM VIO server is memory and CPU intensive and prone to having strange issues which you just can't trace through its complicated configuration (why the hell is every network card enX on AIX???).
I guess its what you're used to... I work on AIX and yearn for Sun - looks like you're the other way around!
AIX has LPAR support since 2000 or 2001. Sun is trying a new thing every year, it's annoying.
To be able to use LDOMs in our one-year-old Sun T1000s, We had to upgrade the OS, the firmware, and install ten freakin patchs. :-(
That's not what I call a "mature technology"... Edited 2008-10-15 19:19 UTC
Well ... i was still able to look up the BugID in sunsolve.sun.com . And by the way: There is nothing as too much paranoia in security. Just because youâre paranoid, doesnât mean theyâre not after you.
While I'm generally neutral on this topic, the summary at the bottom tells me all I need to know about the article. I might have expected better from IBM Developer Works:
Why this could not be true ?
Did you try solaris zones ? Sun LDOM ? IBM LPAR ?
LDOM is a new product, and they are just saying that IBM LPAR are here and *working* for years dude. Sun is late, it's a fact.
cmon. this is an IBM commercial.
while the whole commercial was entertaining, the thing that made me laugh was this, "IBM has a 40-plus year history of virtualization. No other vendor can come close to making this claim..."
now at first there isnt anything really funny about it until you consider this. IBM has only updated its virtualization software AFTER another vendor did (Sun, HP, OSS, etc...). IBM released a product and then plays catch up to every comopany's new release, the "me too" game. not that i don't like there virtualization, infact i love WPARs, but its still nothing to write home about.
Seems like a different person wrote the HP-UX part, which was pretty clear and understandable, and the the AIX and Solaris parts, which were inconsistent and confusing. It seems like the Solaris/AIX person didn't understand the difference between Containers and LPARs, and, if I understand WPARs right (shared kernel, yes?), made the same mistake between WPARs and PowerVM hypervisor (obviously, if PowerVM can run OS400 and AIX, no shared kernel...or do you need a hardware partition for that? Wish the article would have told us.)
Plus, who copied and pasted from the powerpoint?
Mr. Milbergs article is of abysmal quality. It's partly based on outdated informations and otherwise outright incorrect. His position about partitions is based on the DSDs, not mentioning that the Quad-XSB introduced with SPARC Enterprise are a different story. The LDOMs stuff is based on T1000 systems to a part and outright incorrect at other parts. Mr. Milberg should read the documentation available at docs.sun.com before writing such an article to get the facts right.
I've already wrote a comment to this article in my own blog: http://www.c0t0d0s0.org/archives/4931-Analysing-a-so-called-Compari...
I don't know how this article was able to find it's way into IBM developerworks or even OSnews. Edited 2008-10-16 10:54 UTC
This data is also quite outdated and wrong regarding HP systems. For example:
- You can move resources between nPartitions using iCAP
- IBM has no electrical isolation, whereas on HP systems you can replace a whole cell board without downtime. And no, you don't need to reboot for that.
- HP's virtual machines product is called HPVM or HP Integrity Virtual Machines, IVM is an IBM product.
- HPVM supports 8-way guests today (not 4), runs on systems with up to 128 CPUs and I believe 2 TB of memory.
- HP demonstrated on-line migration, it's currently in restricted beta with the latest release.
I'd like also to point out that HP virtual machine technology is software, so you can run it on older hardware. In other words, someone who purchased HP equipment 3 years ago will get on-line migration on their existing systems, but you need to buy new Power systems to get the equivalent feature.
Is it just me or are all of the IBM DeveloperWorks articles on OSNews of middling to poor quality? The ones about linux are usually fairly superficial and the others seem to read like IBM brochures aimed at the less-than-sophisticated.