What is the difference between Celerra File Server and Celerra Network
Server. there are several versions of CNS available like NS 600/700.
Under what different situations would CFS and CNS be used, where would
you choose to buy CFS and where CNS? what is the advantage of one over
another?

Thanks in advance

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On 12 Feb 2006 23:51:02 -0800, ruchikathuria@******* wrote:

>What is the difference between Celerra File Server and Celerra Network
>Server. there are several versions of CNS available like NS 600/700.
>Under what different situations would CFS and CNS be used, where would
>you choose to buy CFS and where CNS? what is the advantage of one over
>another?

The NS (or NS/Integrated as they're now calling it) series (NS500/700)
are a combination of a small Celerra NAS server and a Clariion disk
array.  These have limited expansion in terms of the NAS unit - up to
four Data Movers.

The different versions of the NS are:

NS500 - 1 or 2 (1.6GHz P4) Data Movers, connected to a CX500 array
NS700 - 1 to 4 (3.0GHz P4) Data Movers, connected to a CX700 array

The NS/Gateways are just the NAS part (Data Movers and Control
Station), with the intention that you just connect them up to your
existing Clariion or Symmetrix, other than that they're identical to
their 'integrated' siblings.

The Celerra File Server was the big-box, full cabinet, highly scalable
NAS server, which had anywhere from two (usually) to fourteen Data
Movers. This was original NAS offering from EMC and was also known as
CFS-14 and before that SNFS (Symmetrix Network File Server).  The CFS
has no disk within the unit and requires you to connect it to a
Symmetrix or Clariion array.

The CFS-14 has been replaced by the Celerra NSX, a blade based Data
Mover approach.  Like the CFS, the NSX needs to be connected to a
Symmetrix or Clariion array.

There was also a specialized version of the CFS-14 called the CMS,
Celerra Media Server.  This was designed for rich media environments
like webcasting and video playout from disk.  This is no longer
available AFAIK.

Why would you choose one over the other...?  Scalability and
performance.

Some environments like the massive redundancy you can get from a full
Celerra cab connected to a Symmetrix - but you need deep pockets for
this - only really makes any sense at all for existing Symm users.
This isn't necessarily the highest performing combination in the real
world.

HVB

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