Sounds "similar" to my environment.
We're running Solaris Media servers, through Brocade SW3800s to L700elibraries
(Sun rebranded) loaded with LTO2 & 3 drives.Our second site is DWDM connected
(2x 2Gb links), and we have SW3800sand another identical L700e over there.Using
ITC for all backup jobs except NetApp/NDMP.
We've had no issues so far......however, everything is native FC....nobridges
anywhere. When you upgrade to the LTO3 drives, since you'realready changin the
drives, ,I would recommend going FC, and switchingyour library control to FC as
well...eliminate the brdigesaltogether....eliminate the extra point of failure.
Also, with the ISL/Trunking license for the Brocades, which you need toconnect
multiple switches, regardless of DWDM, you get increased buffercredits, so you
shouldn't need "more" to support the DWDM link.....
I don't think the 4Gb switches/HBAs are going to buy you anything.....ifyou're
using ITC you will be bottlenecked by the slowest of the two tapedrive devices,
which will be the remote site connected by the 2Gb DWDMlinks.Even if all your
backups were local, I don't think you'd see a lot ofadvantage there.
--
> -----Original Message-----> From: veritas-bu-bounces at
> mailman.eng.auburn.edu > [mailto:veritas-bu-bounces at
> mailman.eng.auburn.edu] On Behalf > Of misha.pavlov at sgcib.com> Sent:
> November 2, 2006 6:09 PM> To: veritas-bu at mailman.eng.auburn.edu> Subject:
> [Veritas-bu] McData vs Brocade> > > > Folks,> > > I would like to hear your
> experiences or better yet > comparison of McData> Sphereon 4700 with Brocade
> Silkworm 4100 4Gb switches.> > CurrentIy our environment is> 2 SUN media
> servers, STK L700, SL500 at one location, > connected via 2 STK> StoreNet
> 4100 ( re-branded 1Gb Brocade SilkWorm 2800 ) to> 2 SUN media servers, STK
> L700 at the remote location, another > 2 StoreNet> 4100.> L700 populated with
> SDLT220s and SDLT320s drives, which SAN'ed via> Crossroads 4x50 SCSI to FC
> bridges.> Netapp R200 NDMP from the remote location via DWDM to SL500 at
> this> location.> > 2 StoreNet 4100 ( re-branded Brocade SilkWorm 2800 ) at
> each location> ISL'ed and DWDM'ed to other location.> We are doing in-line
> copy of each backup ( except NDMP form > Netapp ). 1> stream to a local
> library, 1 stream to remote one.> We vault local tapes and rotate tapes in
> remote L700.> > > We were having really hard time with SDLT drives going down
> > every day and> SCSI-FC bridges being hung in this SSO configuration.> Of
> course the backup window grew with time to 24x7 and initial 1 month> on-site
> retention is shrinking as the ammount of data dumped > doubles each> year.> >
> At thi spoint we decided to replace SDLTs with LTO3, upgrade > DWDM to 2Gb (>
> 2 of them ), upgrade to 4Gb HBAs on media servers and of > course upgrade to>
> faster 4Gb switches.> > We all set and decided on keeping the existing L700
> and buying LTO3 HP> drives.> It is the switch selection, whcih drives us
> crazy.> CISCO came out to be cost prohibitive for this simple mini SAN.>
> Brocade seems to be all right at more than twice less money + Extended>
> Fabric license ( to get enough buffer-to-buffer credits for > DWDM ports )>
> But McData's 4700 is more than twice cheaper that Brocade and > seems to be
> a> real deal, plus no additional license for DWDM required.> > Any input on
> switch seleection is
> appreciated.====================================================================================
La version fran?aise suit le texte anglais.
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