Hi Peter,
The KVM console is a video over IP representation of the blade server. This facility is required to build and manage the servers from remotely. In an order to access each blades remotely , a pool of IP addresses is assigned as a management
A good example is located in the link below;
http://www.cisco.com/c/en/us/support/docs/servers-unified-computing/ucs-manager/110435-ucs-kvm-00.html
While the cable managment arm is a physical device that you install on the hardware. I listed some pros and cons in my opinion over the Cable Managment arm.
Reasons PRO
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GREATLY reduced likelihood of accidental disconnection when working on other things in the rack. This is big for me .. it just sucks when you are debugging a problem with server A and accidentally knock out the power cord for server B.
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Tidiness / Cleanliness - the rack just looks better with arms, and it is harder to keep the rack tidy without arms.
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No need to disconnect (and reconnect) when doing maintenance. Even if the maintenance is done offline, not having to touch the connections makes it easier.
Reasons CON
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Airflow / cooling - the arms can reduce airflow, particularly in dense racks.
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Difficulty changing cables - I think this is overblown. When swapping a cable in a crisis you skip the cable management, get both ends plugged in, and make it pretty when things settle down.
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More moving parts - can pinch fingers, catch on things, etc.
These two items are completely different.
HTH,
Qiese Dides
