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Unique Feature of MAINFRAMES


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ganmain

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Joined: 19 Feb 2005
Posts: 28

PostPosted: Sun Mar 13, 2005 12:43 pm
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Hi friends
I WANT TO KNOW THE UNIQUE FEATURES OF
MAINFRAMES WHICH OTHER SYSTEMS DON'T HAVE.

I WANT TO KNOW WITH COMPARISON WITH OTHER
SYSTEMS .

PLEASE CLARIFY THIS
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mcmillan

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Joined: 18 May 2003
Posts: 1207
Location: India

PostPosted: Sun Mar 13, 2005 9:34 pm
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Please check this link:

ibmmainframes.com/references/a1.html
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ganmain

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Joined: 19 Feb 2005
Posts: 28

PostPosted: Sun Mar 20, 2005 5:36 pm
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thank you for showing that link.

but i cannot able to understand some terms

reliable single thread performance and maximum I/O connectivity

can you explain these terms in simple way
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mcmillan

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Joined: 18 May 2003
Posts: 1207
Location: India

PostPosted: Mon Mar 21, 2005 12:49 am
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Reliable single thread performance:

Allocating each Job to one Processor without Sharing the CPU Time is Single Threading.

Quote:
Some processes, such as the merge phase of a sort/merge (sorting can be subdivided...) MUST be run single thread. Other operations (balancing b-trees, etc) are single thread and tend to lock out other accesses. Therefore, single thread performance is critical to reasonable operations against a DataBase (especially when adding new rows).



maximum I/O connectivity

Ability to connect more Input output devices.

Quote:
Mainframes excel at providing a convenient paradigm for HUGE disk farms; While SAN devices kind of weaken this to some degree, SAN devices mimic the model of the Mainframe in connectivity "tricks" (at least internally).
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