vSphere requires a 32-bit DSN

When you move to the installation of vSphere, if on a host Windows 64-bit x 86 compatibility mode, it takes a 32-bit DSN for database connection.

If a DSN has been put in place through Start & gt; Administrative Tools & gt; Data sources (ODBC) vSphere Setup will not be able to use this DSN.

Tool administrator ODBC 64 bits that can be invoked from the control panel to manage the user DSN and system DSN used by 64-bit process, but for the 32-bit data sources, the 32-bit ODBC Administrator tool is used for Windows on Windows 64 (WOW64) process.

To configure a DSN 32 bit launch the 32-bit version of the Data Source Administrator. It is located in the: %systemdrive%\Windows\SysWoW64\Odbcad32.exe

OK, now that we have covered, my only question is WHY?  vCenter 64-bit, 64-bit OS, 64-bit SQL, ESX database is now 64-bit... so, why the limit of 32-bit.

We take two small steps forward to take one GIANT leap... And I must ask, what does VM Ware?  Why, oh why can't he be MORE thorough.  It's mind-boggling to hoops to make it work, it is really back.

RParker wrote:

Maybe because what it does not really matter. Make a 64-bit application actually use more memory (because all pointers and many other types of data, in its structures of duplicate data in size).

It does not matter?  Hmm... you did not use the 64-bit applications for a long time have you?

No, not for a long time.  Located only 10 years (IRIX 6.4 on the original SGI servers) and Digital UNIX on Alpha.  You have assumed, with no knowledge of who I am, or what I do for a living, somewhere, I'm an ignorant who doesn't know my donkey to my elbow.  Well, I have news for you.  I run one of the largest supercomputers in the world to live, one 64-bit from the beginning, because we need the applications to use more than 4 GB of RAM (we had a system with 256 GB of RAM in 2001).  In other words: I know what I'm talking about.

Everyone can see that they are MORE robust and work better than 32-bit.  Seek to vSphere, it WAS 32-bit before, NOW the performance is much better, coincidence just HAPPEN when they converted to 64-bit?  I do not.

They have had the time to fix bugs.  From 32 to 64-bit is completely irrelevant to this.  It is also possible to write good stable code in 32-bit and 64-bit.

And why do companies that manufacture products HAVE 64-bit it a POINT they offer 64-bit support '?  Yes, it does not matter?  Only for people who do not pay attention to new technologies.

It's called "marketing."  A lot of gullible bettors will think "64 is larger than 32, 64-bit must be better, right?" without really thinking about what it means.  The result: a lot of fat software, sales and big bonus of the commission.

and vCenter isn't anywhere nearby which great - then there's really no need to make the 64-bit application. You would have nothing to win and probably lose some performance. OK, so 64-bit-to-end can be more 'clean' but that's all.

Do you read the fluff or technical manuals?

Technical manuals and experience 15 years as a sysadmin and programmer in high performance scientific computing.

It's not at all... 64-bit isn't the following watchword is the FUTURE for existing technologies.

Agreed.  Where did I say it was a buzz word?  Where I said that he should not be adopted?  Where did I say that the technology itself is not important?  I don't have.  All I said was that for this particular application, switching to 64 bit is not important.

AND my point is that if they did the rest of the 64-bit products why they left these?

For precisely the reason that I said, which you seem to have ignored.  This client is a small application.  He doesn't have to manage large amounts of data.  operating systems 64-bit x86_64 can execute 32-bit code in native mode, with no drop in performance.  Therefore, it is quite understandable that VMware is converting this application 64 bits a low priority.  On the other hand, converting server components 64-bit has been much more important, because they manage more large amounts of memory. ESXi itself, for example, must be able to manage physical servers with very large amounts of RAM, and this is something that cannot be done effectively with a 32 bit OS.  Then, of course, they did it first and left the customer server components to last because making 64-bit enable all new features or functionality.

Forget all the ideal way to provide more software and better features, it must ALL be compiled on 64-bit then do not flip flop or use something else (such as a DSN of 32 bit on a 64-bit OS) ESPECIALLY when 64-bit DSN is backward compatible...

Yes you can defend 32 bit all you want, to the people who KNOW the real difference, is there more to him than just double the number.

No, it isn't.  The transition from 32-bit does nothing to increase stability.  If I write a request for a 32-bit system and then recompile it for 64 - bit, all bugs that had as a 32-bit will always be there in the 64-bit program.  It may be even more, due to invalid assumptions about the size of some data structures.  I would like that you describe to me exactly what you think it's more 'to him' (1) double the number of bits in certain types of integers and (2) double the number of bits in pointers, so that they can meet flat spaces of memory greater than 4 GB.  Enlighten those of us who went through the 32-> 64-bit transition 10 years ago and obviously missed something.  Please, I beg you.  The Linux community would like to know, too, since apart from those two things, there is no difference between a 32-bit version of Linux and a 64-bit version.  The same source is used for both versions.  Which is probably true for Windows 7, although of course I don't have access to the source code to check.  I certainly used to compile my Windows programs for two 16 - and 32-bit versions of Windows from the same source code, at the time it was necessary.

In high performance computing stuff that I run, we actually moved some 64-bit to 32-bit applications, because the additional memory required for 64-bit slower (more RAM required results in a greater frequency of the CPU cache misses leads to reduced performance).  The difference can be very important, because the cache is about an order of magnitude faster in terms of latency than main memory, so if one asks who managed to run almost entirely into the cache, then that grows the cache, the performance drop can be huge.  Not all of this serves to something like the vSphere client, because it is not a CPU-bound application.

This is not the same as the shift from 16-bit to 32-bit of the 1980s.  In this transition, stability has been improved, but it wasn't because of the increase in bits.  It was because of the additional memory protection features available in 32-bit modes of 386 processors and later, compared to that of the 8086 and 80286, and Linux, OS/2 and Windows NT all took advantage of this.

Kind regards

Tim

Tags: VMware

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