Re: FW: Storage Area Networking [7:56857]

2002-11-07 Thread Jose Celestino 
Words by Frank Dagenhardt [Tue, Nov 05, 2002 at 02:49:56PM +]:
 Storage Area Netorking is just a way to enable storage to be used like a
 utility. It simplifies management by consolidating all of your storage into
 a virtual pool for you to be able to draw from at any time. Enabling you to
 get the full use out of the storage that you have paid for. Most SANS have
 the ability to take advantage of cloning, snapshots, replication and
virtual
 disks. Network attached storage is more like an optimized file server. SANS
 present the storage to the servers as if they were actual physical disks on
 the server. If you have more questions I would be happy to answer. 
 

I have, related to this last part of NAS vs SAN. Can we use SAN as a
NAS? I mean, can we share (the same) central data in a transparent way
among n servers? Will this work as a NAS on steroids? Is this
supported/used on any platform? Are we talking about exclusive or
concurrential disk accesses? Does this bring problems on data
consistency? (well, every machine sees the disks as their own...) Is it
possible at all?

TIA

-- 
Jose Celestino || SysAdmin::SAPO.pt http://www.sapo.pt
http://xpto.org/~japc
-
Lately, the only thing keeping me from becoming a serial killer is my
distaste
for manual labor.-- Dilbert




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RE: FW: Storage Area Networking [7:56857]

2002-11-07 Thread Frank Dagenhardt 
TIA,

You could use a server connected to a SAN as a sort of NAS. I do not know
what you mean by sharing the data in a transparent way amoung n
serversyes you could share data from a nas amoung n servers. This NAS /
SAN combo is used by many vendors. Only one machine will see the lun as its
own, that machine would then share it out to the other machines, unless you
used a snapshot or a clone of that disk, but then the other servers would
have to be connected to the SAN.

Frank 


I have, related to this last part of NAS vs SAN. Can we use SAN as a
NAS? I mean, can we share (the same) central data in a transparent way
among n servers? Will this work as a NAS on steroids? Is this
supported/used on any platform? Are we talking about exclusive or
concurrential disk accesses? Does this bring problems on data
consistency? (well, every machine sees the disks as their own...) Is it
possible at all?

TIA

-- 
Jose Celestino || SysAdmin::SAPO.pt http://www.sapo.pt
http://xpto.org/~japc
-
Lately, the only thing keeping me from becoming a serial killer is my
distaste
for manual labor.-- Dilbert




Message Posted at:
http://www.groupstudy.com/form/read.php?f=7i=57054t=56857
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