Tobias Balle-Petersen schreef:
Hello...

Im considering moving my index-files to a RAID1. How big do these
files get? What should I plan for?

Thanks,
Tobias

since 1 july 2007 i store all mails to this list in 1 folder
(Maildir-format)

the size of this (and the indexes) is:
31M     cur
80K     dovecot.index
6.8M    dovecot.index.cache
44K     dovecot.index.log
136K    dovecot.index.log.2
4.0K    dovecot-keywords
164K    dovecot-uidlist
4.0K    new
4.0K    tmp

so, on average maybe 20%-30%  of the size of your messages ?



On Fri, 8 Feb 2008, Jan van den Berg wrote:

That's actually quite a lot.
Consider you run 100k+ mailboxes (1GB each) and you would move to
Dovecot this will be a huge chunk out of your storage.
Is using dovecot index files really that much faster than running
":INDEX=MEMORY" ? Where could I find some benchmarks about this?

Cheers,

Jan


I think a lot would depend on your average message size. Here's another data point. At my old company's server:

43,438 messages
2,350,260,769 bytes
per-message ~ 54K

~3,000 folders:
    486 dovecot-keywords
   2675 dovecot-uidlist
   2967 dovecot.index
   2456 dovecot.index.cache
   2967 dovecot.index.log
    183 dovecot.index.log.2
    251 maildirfolder
     26 subscriptions

total non-message file sizes:
     93,010,227 bytes
/ 2,350,260,769 bytes
=~ 3.9 percent


And, taking into account what Timo wrote about it being client-dependent, most of the users there are using Outlook.

Best,
Ben

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