Kworld Net Academy

Kworld Net Academy Computer Networking training institute in Kanpur

Many times I have heard people saying that Linux Kernel is a OS. Some says it a application. Some refer it as a process....
23/12/2013

Many times I have heard people saying that Linux Kernel is a OS. Some says it a application. Some refer it as a process.

To put it precise - Linux Kernel is :

Kernel is really nothing more than a resource manager. Whether the resource being managed is a process, memory, or hardware device, the kernel manages and arbitrates access to the resource between multiple competing users (both in the kernel and in user space).

21/12/2013

What’s been removed from Exchange
Server 2010?
As always, as new features come, old
features go. There are inevitably a few that
have found themselves on the "deprecated
list" this time around, and so will not be
continued in Exchange Server 2010 and
beyond. Since this is a much shorter list than
the "new features", we’ll start here:
There are some major changes in
Exchange Server clustering: in Exchange
Server 2007 you had LCR (Local
Continuous Replication), CCR (Cluster
Continuous Replication) and SCR
(Standby Continuous Replication) - three
different versions of replication, all with
their own management interfaces. All
three are no longer available in Exchange
Server 2010.
Windows Server Fail-over Clustering has
been removed in Exchange Server 2010.
Although seriously improved in Windows
Server 2008, a lot of Exchange
Administrators still found the fail-over
clustering complex and difficult to
manage. As a result, it was still prone to
error and a potential source of all kinds of
problems.
Storage Groups are no longer available in
Exchange Server 2010. The concepts of a
database, log files and a checkpoint file
are still there, but now it is just called a
Database. It’s like CCR in Exchange
Server 2007, where you could only have
one Database per Storage Group.
Due to major reengineering in the
Exchange Server 2010 databases, the
Single Instance Storage (SIS) is no longer
available. This means that when you send
a 1 MB message to 100 recipients, the
database will potentially grow by 100 MB.
This will surely have an impact on the
storage requirements in terms of space,
but the performance improvements on the
Database are really great. I’ll get back on
that later in this article.

21/12/2013

Exchange Server 2010 will be available in two
versions:
Standard Edition , which is limited to
hosting 5 databases.
Enterprise Edition , which can host up to
100 databases.
However, the available binaries are identical
for both versions; it’s the license key that
establishes the difference in functionality.
Exchange Server 2010 is also only available
in a 64-Bit version; there is absolutely no 32-
bit version available, not even for testing
purposes. Bear in mind that, as 64-Bit-only
software, there’s no Itanium version of
Exchange Server 2010.

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