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  3. April 2016

Re: Use of 2nd library for BRMS DUPTAPBRM only

It's usually the connections between buildings. For those distances you switch to SMF and matching SFPs. Mostly they are in the 1310 nm wavelength. The longer wavelength means fewer reflections off the sides of the fiber and hence less loss. That's more expensive but you only need those for the ports between buildings. Up to 10k (6 Miles) it's unlicensed stuff but longer than that gets into licensed equipment. Brocade for one has stuff that will go 100 Km. More buffers are required due to the extended distances to be careful with too little memory in the switches.

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/11/2016 5:00 PM, Steinmetz, Paul wrote:
Larry,

Which piece of hardware has the limiting distance and what is that distance.
Fiber IOA, Brocade 300 FC SAN switch G-bit or combination of both?
What are the distances?

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DrFranken
Sent: Monday, April 11, 2016 3:57 PM
To: Midrange Systems Technical Discussion
Subject: Re: Use of 2nd library for BRMS DUPTAPBRM only

Just fiber switches and standard Fiber IOAs.

So Standard IBM Power fiber IOA on the server side to local fiber switche, fiber between buildings, fiber switch on the far side, fiber to the drive there. Also Ethernet of course for the management interface.

In the specific case I'm thinking of there is nothing left in the room on the far end except that lonely tape library hanging out. It's over there because to them it's "Off-site Enough" being across a river and a couple miles down the road after that. Plus it's secure enough given building guards, multiple layers of badges required, Including 100% of all exterior doors at all times, and the door doesn't say anything like "There be data in here." :-)

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/11/2016 3:36 PM, Steinmetz, Paul wrote:0

Larry,

How are they attached?
Any "special" network gear?

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
DrFranken
Sent: Monday, April 11, 2016 3:31 PM
To: Midrange Systems Technical Discussion
Subject: Re: Use of 2nd library for BRMS DUPTAPBRM only

Not sure how far away your 'remote site' is but we have customers with tape libraries a couple miles down the road and no issues with that.

If you're talking 50 miles that's likely not gonna work too well.

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 4/11/2016 3:12 PM, Steinmetz, Paul wrote:

I've completed my LTO5 to LTO7 migration.
I have a 2nd 3573 L4U library.
I'm considering maybe using it at a remote location for offsite DUPS
only Or Possibly selling it.

If used offsite, I'm not sure how I would connect it to the iSeries.
(no iSeries at offsite location) And I believe there is a limit to the fiber length.

Would it take additional IOA to existing LPARs ?
Or
Could this be accomplished with modifying the zoning on the Brocade 300 FC SAN switch?

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx<mailto:psteinmetz@xxxxxxxxxx>
http://www.pencor.com/

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