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тАО01-10-2011 05:17 PM
тАО01-10-2011 05:17 PM
A little bit of background first - I have three buildings, connected together via fiber optic cable. The Ethernet on the fiber is 1 GB/s. I'm using ProCurve and 3com switches. Although I'm planning on replacing the 3coms with Procurves as well.
Now - I'm interested in a SAN via IP solution. What seems like a great plus is that I could fairly easily put another array in another building, and use it for redundancy. Primarily storage will be in the same room as the server though.
But since I have an existing Ethernet already connecting the buildings... Plus, I do have the option of upgrading the GBICs to 10 GB/s models.
Or would I still be better off going with fiber channel instead? Either forgoing the redundancy using other building, or by perhaps using an extra pair in the cable for the SAN.
But in my mind the IP solution is more cost effective, since the basic transport infrastructure already exists.
I don't have any heavy bandwidth needs. File sharing, MSSQL, email... About 40 users, but they're split between three buildings so wherever the storage is, about half the users are accessing it over the fiber.
Any comments? Suggestions?
Thanks!
Solved! Go to Solution.
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тАО01-11-2011 06:52 AM
тАО01-11-2011 06:52 AM
Re: A few basic SAN questions
1) HP P2000 G3 iSCSI dual controller
http://h18000.www1.hp.com/products/quickspecs/13551_div/13551_div.HTML
or
2) HP P4000 G2 SAN Solutions
http://h18000.www1.hp.com/products/quickspecs/13552_div/13552_div.HTML
>> But since I have an existing Ethernet already connecting the buildings... Plus, I do have the option of upgrading the GBICs to 10 GB/s models
Which type of fibres are building connected (multi-mode or single-mode)?
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тАО01-11-2011 08:26 AM
тАО01-11-2011 08:26 AM
Re: A few basic SAN questions
We have a multimode fiber connecting the buildings, right now I'm using the ProCurve SX-LC Mini-GBIC (J4858C) for connectivity, but I think I could upgrade that by using the 2-port 10 Gigabit AL expansion module plus the appropriate multimode transceivers...
I have extra pairs, but I might need them for future phone expansion, so I would rather avoid using them...
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тАО01-11-2011 08:48 AM
тАО01-11-2011 08:48 AM
Re: A few basic SAN questions
http://www.cisco.com/en/US/prod/collateral/modules/ps5455/ps6574/product_data_sheet0900aecd801f92aa.html
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тАО01-11-2011 10:00 AM
тАО01-11-2011 10:00 AM
Re: A few basic SAN questions
But of course there could be other unforeseen problems.
Good point though. I certainly don't want to spend all that money and then find out it doesn't work.
I wonder how I could be sure of that without actually buying all the equipment first...
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тАО01-11-2011 10:10 AM
тАО01-11-2011 10:10 AM
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тАО01-12-2011 06:13 AM
тАО01-12-2011 06:13 AM
Re: A few basic SAN questions
iSCSI works quite well, however the primary gains against FC will require you to use 10Gb.
Next challenge. iSCSI, like FC and any block level SAN infrastructure must be segregated, and must be redundant. That means, different switches, ethernet cards, IP ranges, etc. to both maintain stability of the environment, but also security of the data.
What iSCSI does is bring all the benefits of SANs to the cost effectiveness of IP/Ethernet, while also bringing all the security risks of Ethernet to the SAN. You also cannot realistically tunnel using IPSec or other VPN technology without severely impacting performance.
The HP P2000 series (Lefthand arrays) are a good offering, Dell Equalogic (they bought that), also don't forget converged / unified storage arrays such as the EMC Celerra, NetApp, or the HP EVA arrays.
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тАО01-12-2011 06:33 AM
тАО01-12-2011 06:33 AM
Re: A few basic SAN questions
P4000 = Lefthand Networks
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тАО01-12-2011 04:58 PM
тАО01-12-2011 04:58 PM
Re: A few basic SAN questions
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тАО01-17-2011 09:10 AM
тАО01-17-2011 09:10 AM
Re: A few basic SAN questions
Running FC over IP is not really an option, and given the work on Converged interfaces, you would be better off with either an array that is capable of both (including FCOE), or just going with iSCSI.
[/quote]
Why exactly are you saying that FC over IP is not an option?