ghosting, cachepilot, and switches
Hi gang, OK here is a few questions I am searching answers for.
during the Easter holidays we decommissioned our old servers (4 year old) and have commissioned the following
SAN 4TB Hitachi RAID 6
4 Intel servers
apple Xserver 2TB Mirror
3COM 5000 series switch
UPS cant remember the model
11 tape backup solution which is configured to backup daily, weekly, monthly, annual (on hold) and ghost images (on hold)
all is sitting in a nice 42U rack
each server is using ISCSI on VLAN and the Ethernet cards have been teamed and VLAN'ed
so performance is really good.
My next step is to replace all the 3com switches in the school and update to the latest range.
at the moment the servers are connected to the network via 1gb copper.
As I am happy with 3com I will be sticking with them. Is anyone using the 4000 series which you can use stacking, I'm also thinking about aggregating the servers 1gb connection to the the network so we have 2gb link. I haven't looked at switches in some time so I feel a little out of my depth at present in what to go for and how to configure. I must note we already have a fiber backbone in place.
I noticed while we were ghosting it was taking 5 hours to send a an image to a room of 30 PC's (14GB 30mb/m) I managed to track down the problem. all traffic was going through the cache pilot which is set as out gateway 10.64.64.4. so I disconnected the switch from the network and we suddenly started to see ridiculous speeds again.
Has anyone else come across this problem? could the gateway be set differently so it points to our router? I'm confused and worried as soon as we reconnect the cache pilot it has a noticeable effect on the network.
so far the new servers have been performing really well without any error messages. the weakest link now is our switches. Myself and the IT coordinator have talked about this and know that this financial year we need to replace the switches.