Dedicated switch.

2 ESX with HBA? iSCSI dedicated NIC 1 FAS200 with 1Gb NIC interface

1 dedicated sw for this.

Raj Patel-2 wrote:

Hi Jesper,

Whats your existing switching infrastructure ?

Are you running a seperate iSCSI network as a VLAN on a shared switch or a dedicated switch ?

We're using a Cisco 4948 with a iSCSI VLAN (for SAN connections) and Data VLAN (for normal servers) - seems to work fine. Our SAN vendor swears by Foundry switches too.

Cheers, Raj.

On Wed, Jul 16, 2008 at 4:44 PM, Amateur-FASadmin jesper@harderconsult.dk wrote:

...

Dear group

What switch equipment should I use between my FAS and two ESX servers ? I'm having slight performance problems on my ERP system.

FAS200 with two shelves and iSCSI 1gbit.

Regards Jesper Harder

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-I have a high Google IQ

View this message in context: http://www.nabble.com/FAS200-iSCSI-performance-tp18480142p18480142.html Sent from the Network Appliance - Toasters mailing list archive at Nabble.com.

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Make sure you have a nice gigE switch as well as jumbo frames enabled on BOTH the switch and ESX servers. And yes Foundry rocks for iSCSI :)

To your specific question of what kind of switch should you use, believe it or not I don't think there is a HCL for Ethernet switches from Netapp, but Foundry and Cisco will be sure bets. Make sure its gigE, managed, and supports jumbo frames.

Perhaps a good question to ask is what kind of performance issues are you having? IOPS, throughput, or instability? A FAS200 wouldn't be the first platform I'd think of when designing an ERP infrastructure too...

- Hadrian

-----Original Message----- From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Raj Patel Sent: Wednesday, July 16, 2008 12:25 AM To: Amateur-FASadmin Cc: toasters@mathworks.com Subject: Re: FAS200 iSCSI performance

Dedicated switch.

Whats the make/model ?

I'm not a SAN or Network guru but I have heard performance can suffer if you have substandard switches or incorrect configuration.

What performance do you get when you do a big file copy ? On the SAN and the ESX servers to see where the bottlekneck is.

Cheers, Raj.