I've used services where there are multiple application servers spread out throughout US, at least I have to assume because I could explicitly use urls like EastUS.email.Com
or WestUS.email.Com
or Euro.email.com
(as opposed to just email.com
. I understand having multiple application servers to spread out the load, but what I don't understand is how I can apparently use any of the above urls to access the same email address and get up to date information -- This makes it seem like all three app pools connect to the same database -- If we only have one database, how does having multiple application servers help with load balancing and/or redundancy?
Sidney's questions
I'm trying to wrap my head around setting up a module mapping for IIS in a script. I've got the command
%windir%\system32\inetsrv\appcmd set config /section:handlers /+"[path='*.cgi',modules='CgiModule',name='vscgi',verb='get,head,post']"
which does pretty much everything I need, however, instead of explicitly accepting three verbs, I would rather just accept all verbs (like the system does by default when defining a module mapping via the UI). Is this possible?
So I went out to look at a video server the other day that had degraded raid issues. I've read about the various raid levels and how they are supposed to work, but the behavior I witnessed here has me a bit baffled.
The Raid 1 drive was marked as degraded. The system actually incorrectly id'd the culprit drive (verified by chkdsk), but what was really weird was it looked like the raid stopped trying to mirror the two drives months ago, but only gave an alert a few days ago. There are no files or event logs younger than 5/14 on the bad drive. It's boot-able, but has a tonne of bad sectors that are causing rampant blue screens.
Finally, since the good drive was marked as degraded, the system wouldn't boot from it, the raid had to be broken (after file backup!) and then a new one created live in the Intel matrix manager.
Is this behavior the result of the slow death of the bad drive? Is it anomalous? Is it something I may expect to see again?
Thank you,
So I've been playing around with nmap, and found a curious problem, two devices in the same subnet have the same mac address. I would like to track down the second mac, as the first one is the sonic wall, which has some unsettling implications.
If I'm correct, either I have a nic which was issued with an illegitimate MAC address, or someone is spoofing the my sonic walls mac, thus recieving at least all the broadcast packets.
I'm hoping someone can give me some clues on how to track down the other mac address. I have access to a linux box as well as access to the sonic wall and the patch panel. If it comes down to unplugging every device one by one I can, but other solutions would be appreciated.
Thank you, Sidney