[OpenIndiana-discuss] Linux software-raid with two Comstar iSCSI volumes

[Brian Hechinger]

On Nov 16, 2012, at 9:35, Florian <florian at acw.at> wrote:

> Hi,
> 
> The Problem with the BladeCenter is, that there are only two network ports an all blades, for two switches. It is possible put put two more switches in it, but have to buy than extra network cards for all blades.
> 
> Maybe, I can talk to my CEO to buy one or two more switches and networkcards, but before that, I have to submit some good statements, if a raid over two iSCSI targets is possible and works well.

Have you considered vlan trunking?

> My favorite would be two 4gb fiber channel switches, but fiber channel is expensive and there is no 10GB network option for the IBM BladeCenter E.

FC isn't *that* much more expensive. I'd recommend it if you are going to add anything.

> 
> @all,
> thank you for your experience!
> 
> Am 16.11.2012 12:20, schrieb Christopher Chan:
>> On Friday, November 16, 2012 07:05 PM, Florian wrote:
>>> Hi,
>>> 
>>> I don't know where is your problem? You don't know our network infrastructure.
>>> It is not so easy to have two redundant switches, no it is even not possible.
>>> 
>>> It would be nice, if we can have two redundant switches, but this was not my question!
>>> 
>>> Sorry, if my first answer was rude to you, but understand me. You made the first answer to my question and it did not help!! Your answer had nothing to do with my question!
>> 
>> Okay, I get it, you don't care about potential problems, no problem.
>> 
>> I hope you have a good switch that can do wire speed and not 30-40 MiB only (D-Link any one?) and some can only do the whole 1gb when jumbo frames is enabled.
>> 
>> You just have to try it out yourself and run some speed tests because we can theorize until the cows come home but only a real practical test will give you the answer. Like you said, we don't know your network infrastucture, we don't know your OI server disk setup and we don't know what hardware you have.
>> 
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> 
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