What kind of KVM switch can I use to monitor sun rack with 490s, 245s, and
Hi,
What kind of KVM switch can I use to monitor sun rack with 490s, 245s, and T2000s ?
Ushas Symon
It sounds like the customer and server room operator are using a Microsoft/X86 mindset. There are several selling points on using RSCs & SCs. First off are the big 3 that are easy for any good server room operator to understand: cost, space & power. If you don't have to buy a 1U Tripp-lite pull out rack KVM console ($1700) and a video card for each of your SUN servers ($400, yes SUN vid cards are $$$), you start off by saving several thousand dollars.
Next you need to let them know that you require remote access to the systems from your desk and a standard KVM doesn't allow this (with Unix, if you have to get up from your desk then its a hardware problem). They can choose to purchase a network enabled KVM, but that adds $700 to your $1700 KVM. By using the SC you will be able to administer the system remotely.
Third, remember that SUNs do not show all the critical boot information on a frame-buffer console output. If you are in diagnostic mode during boot, the monitor doesn't show results until it completes. If some process is stuck (missing NFS or fibre-channel hard mounts, memory tests, etc) then you need to be able to see it to fix the problem. Plus, console frame-buffers only give you 25 lines of output that you can't scroll back.
The only small hitch is security. The new SCs (on T5220s) have SSH built in, but the older V240s and V490s use telnet which some security people balk at. The solution that we used is to put the older system SCs on a private LAN. Access to that private LAN from our intranet is via a SSH enabled dual-homed (non-routing) workstation with local user accounts. We SSH to that workstation & then telnet to the SC on the relevant server. That solution allows me to access our servers that are 40 miles away, saving response time to solve customer problems. A crude diagram is below:
your workstation------intranet------[dual homed, non-routing workstation]------[inexpensive switch]------[server SC]
Good luck.
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