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date: 15 Mar 2006 16:34:29 -0800,
group: microsoft.public.exchange2000.win2000
back
Re: Common Exchange Deployment on NAS?
.... this was done earlier using NetApp VLD "protocol", iirc. iSCSI made it
more efficient.
John can, of course, talk about this ad nauseam. :)
--
Bharat Suneja
MCSE, MCT
www.zenprise.com
blog: www.suneja.com/blog
-----------------------------------------
"John Fullbright" wrote in message
news:uNBeN6JSGHA.5656@TK2MSFTNGP11.phx.gbl...
> For block mode, NetApp presents LUNs to hosts via FCP or iSCSI. For NAS,
> Netapp presents LUNs via file mode protocols like CIFS or NFS. On
> Exchange, you would use a block mode based connection, iSCSI or Fibre
> Channel Protocol.
>
>
> "Bharat Suneja" wrote in message
> news:OP0uSJJSGHA.5924@TK2MSFTNGP09.phx.gbl...
>> NAS devices that make the volumes appear as local storage will work and
>> are used with Exchange - NetApp filers being one of them. NetApp uses a
>> software util called "SnapDrive" to make this possible.
>> --
>> Bharat Suneja
>> MCSE, MCT
>> www.zenprise.com
>> blog: www.suneja.com/blog
>> -----------------------------------------
>>
>>
>> wrote in message
>> news:1142469269.309623.239050@i39g2000cwa.googlegroups.com...
>>> Hi,
>>> What is the most common way to deploy a large exchange installation...
>>> is it common to use NAS?
>>>
>>> As I understand, Exchange stores all its data in a few very large .edb
>>> files... if so, does exchange transfer these large files back and forth
>>> over the network in a NAS?
>>>
>>> Thanks
>>> David
>>>
>>
>>
>
>
date: Wed, 15 Mar 2006 18:48:09 -0800
author: Bharat Suneja
Re: Common Exchange Deployment on NAS?
A few years back, before iSCSI, there was VLD. iSCSI is the option to use
if you want to go over an IP network. Exchange expects a block mode device
formatted with NTFS. It could be DAS or SAN. The SAN could be FCP or
iSCSI. You really don't want to run Exchange over CIFS.
DAS, or Direct Attached Storage, relies on a dedicated connection via a
SCSI, IDE, or other local bus. The disk is accessed via block mode.
SAN, or Storage Area Network, technologies extend a SCSI bus by
encapsulating the SCSI commands in FC frames or iSCSI frames. If you choose
FC as the connection media, you have to provide an FC infrastructure - HBAs,
fibre, switches. If you connect via iSCSI, you have to provide a
preferrably seperate IP infrastructure - initiator (hardware or software+
NIC), cabling, switches. SAN uses the underlying SCSI protocol to attach to
disk via block mode.
NAS, or Network Attached Storage, relies on CIFS or NFS or other protocols
to provide file mode access to files that reside on disk on a remote server.
NAS typically leverages TCP/IP, but can use other network protocols such as
Novell IPX/SPX. The big difference between SAN and NAS is block mode vs.
file mode access.
wrote in message
news:1142479349.370770.11650@z34g2000cwc.googlegroups.com...
> Thanks JOhn... does this mean that Exchange does not use CIFS to talk
> to NetApp and also Exchange can never use CIFS with any NAS head/filer?
>
> Thanks
> David
>
date: Wed, 15 Mar 2006 19:49:57 -0800
author: John Fullbright
Re: Common Exchange Deployment on NAS?
John Fullbright wrote:
> A few years back, before iSCSI, there was VLD. iSCSI is the option to use
> if you want to go over an IP network. Exchange expects a block mode device
> formatted with NTFS. It could be DAS or SAN. The SAN could be FCP or
> iSCSI. You really don't want to run Exchange over CIFS.
>
> DAS, or Direct Attached Storage, relies on a dedicated connection via a
> SCSI, IDE, or other local bus. The disk is accessed via block mode.
>
> SAN, or Storage Area Network, technologies extend a SCSI bus by
> encapsulating the SCSI commands in FC frames or iSCSI frames. If you choose
> FC as the connection media, you have to provide an FC infrastructure - HBAs,
> fibre, switches. If you connect via iSCSI, you have to provide a
> preferrably seperate IP infrastructure - initiator (hardware or software+
> NIC), cabling, switches. SAN uses the underlying SCSI protocol to attach to
> disk via block mode.
>
> NAS, or Network Attached Storage, relies on CIFS or NFS or other protocols
> to provide file mode access to files that reside on disk on a remote server.
> NAS typically leverages TCP/IP, but can use other network protocols such as
> Novell IPX/SPX. The big difference between SAN and NAS is block mode vs.
> file mode access.
>
>
>
> wrote in message
> news:1142479349.370770.11650@z34g2000cwc.googlegroups.com...
> > Thanks JOhn... does this mean that Exchange does not use CIFS to talk
> > to NetApp and also Exchange can never use CIFS with any NAS head/filer?
> >
> > Thanks
> > David
> >
Thanks Again John... I am taking from your message that Exchange does
not support file mode access for its EDB database and therefore only
expects a block mode device and hence only can use SAN or DAS... is
that correct?
(Forgive me if I am restating the obvious...)
/D
date: 15 Mar 2006 20:23:12 -0800
author: unknown
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