Using Load Balancing Hardware: Cisco

[Guest lozza]

Guys,

 

Am having difficulty understanding a few things with regard to Load

Balancing WTS . Environment will be 3 TS servers sitting behind a Cisco Load

Balancer… My questions are:

 

 

1) If i;m using session directory, does it matter what balancing algorithm I

am using? The reason I ask this is because doesn't the session directory

determine whether you already have a disconnected session and then somehow

reconnect you back that server (so effectively the Session Directory keeps

you Sticky to the TS server). So for example if I hit my Virtual IP on the

Load Balancer and it takes me to Server1, I then disconnect and come back

half hour later. When I hit the Virtual IP of the cluster again, this time it

may take me to Server2, will server 2 then check I already have a session on

Server1 and pass me to there? If this is how it works, do all re-directed

requests from the client bypass the Load Balancer and go directly to the

server hosting the disocnnected session?

 

Essentially what I would like to know is can my load balancer be left to

balance traffic however it pleases with no sticky sessions configured?

 

2) Do I need a session directory if I use Sticky sessions on the Load

Balancer, so for example if my Sticky session on thr Load Balancer lasts 9

hours, then the user can disconnect as many times within 9 hours as required

and will always come back to the same TS server and therefore back to the

same session? The TS can then terminate orphaned session after an idle period

of a certain time to ensure sessions are cleaned up. Is this understanding

correct?

 

3) Inorder for WTS Load Balancing to work do I need both Sticky sessions on

the load balancer and also a session directory server when trying to Load

Balance WTS.

 

4) How can you estimate the size of the Session Directory DB? I;m trying to

allocate space to this on a cluster. We will have a about 300 users in

total... Concurrent users will likely be around the 100 figure.

 

Thanks for any help