Question : Problem: Using Cisco 3560\3750 SFP port for Tape Library

I am going to be setting up a tape library. I am told with the library that I'm getting that there are two ways to set it up,

[svrs to be backed up]----->thru the lan---->[backup svr]--->SCSI--->[tape library]

or

[fiber nic]------>[fiber bridge]------>[tape library]

My question is, can I use a cisco switch (3560\3750) and plug the tape library in one of the spf ports on it?

I want to buy the switch to act as the 'fiber bridge' and since it's a gb switch and all the servers have gb nics, i just want them to have a gb connection to the tape library which itself is connected by fiber.

Also, in buying the switch, it says the SFP ports are empty, do I need to purchase a specific gbic or fiber module to plug into the spf port? And i'm assuming this module will depend what type of fiber connection is coming off the tape library, would that be correct? like SC to LC or someting another

Answer : Problem: Using Cisco 3560\3750 SFP port for Tape Library

155 M(bit ?) is plenty to do the cluster replication (well, actually it depends on number of applications/number of users -please tell us more).

The actual problem here will be when your C server fails, and users will fail over to A or B.  Here, you should also calculate the necessary bandwith (you can find this in the redbooks about Domino administration, I don't know it by heart).  
The question is : do you need to cluster ? I would probably (as you say) just replicate the data.  If you can live with a replication interval of 5 minutes, I would do it like this.

To optimize replication, you would only replicate with 1 server to C. That way, replication bandwith is at a minimum (although 100 Mbit is probably plenty).  

cheers,

Tom