At 10:20 PM 12/9/2000 +0100, Len Conrad wrote:
Let me ask this Len, I want to use IMail (mainly for the web
message). But I am fearful of hard drive crashing and loosing the messages.
I wanted to use win2k for the clustering feature to cluster 3 servers
having access to the data drive via SCSI-II adapters. The other thing is
that I would want to authenticate via NT rather than internal Imail
database; since all three servers are members of the same domain - so it
does not matter which server they connect to.
The Raidbox is storing the Imail directory and websites.
>>Our goal is to make all 3 domain controllers w/ Active Directory
>
>what's the point of AD? this is a corporate system or a public mail system?
>
>>and share the External raidbox for data storage.
>
>what RAID? 5? 0+1 is recommended for speed.
>
>Run the imail spool (logging + mail queue) and the mailbox storage on
>separate controllers/disks.
>
>>I am also planning to run Imail on all 3 servers and storing the messages
>>on the raidbox. I think this will be okay since the clustering will take
>>care of data access to the raidbox.
>
>So the raidbox becomes both a single point of failure AND single point of
>contention for all user logins and mailbox access. For all the money you
>are going to spend on hardware and software, your are ending up with a
>non-redundant, high-contention system.
>
>You are running the mailbox storage over the LAN into one server rather
>than on the much faster local disk storage of the 3 mailbox servers.
>
>>All comments are welcome...
>
>You're headed for trouble, assuming the big bucks you are going to spend
>is indicative of 10's or 100's of 1000's of mailboxes and a several
>100,000 msgs/day.
>
>You should also look at 2 IMGate boxes to provide external anti-spam,
>anti-mail bomb, DNS validations, MX redundancy, and send/receive
>off-loading separate from your mailbox servers.
>
>Len
>
>http://BIND8NT.MEIway.com : Binary for ISC BIND 8.2.3 T6B for NT4 & W2K
>http://IMGate.MEIway.com : Build free, hi-perf, anti-spam mail gateways
>
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