Author: W B Hacker Date: To: exim users Subject: Re: [exim] Nhash and Imap
Torsten wrote: >> RedHat *expects* 'performance issues'?
>>
>> Refreshing change, but I am otherwise not going to go there.
>
> This performence issues are only mentioned with GFS clustering (locking
> a file and so on).
> Do you know another way to set up a loadbalanced active/active
> clustering with the same data (same storage)?
> I think GFS (Global File System) is the only way to setup two or more
> systems to read/write on the same data.
> If not, tell me.
> By the way this GFS is so "hot" that the RedHat guys are telling me that
> they need 5 days to setup this "loadbalanced active/active clustering
> with the same data". This is like a workshop (with knowledge transfer).
> By the way, they don't configure my Exim or Imap, it`s only for setting
> up GFS and clustering.
> So, let`s see.
>
>
My first 'large scale' email relied on twinned IBM 3080, later 3090...
... but I have learned not to be a believer in clustering for MTA.
Too many eggs in one basket - even if it is a strong and well-proven basket.
Which IBM mainframes were, but RH GFS is not (not yet, anyway...)
WHEN, not IF, s**t breaks, I prefer it breaks in manageable chunks.
Unless you are taking on Yahoo, MSN, or Gmail, a by-domain split ordinarily
serves even for large multi-domain ISP's, 'coz there are seldom that many in any
single domain.tld (or division thereof).
