Joseph Tam jtam.h...@gmail.com wrote:
Sven Hartge s...@svenhartge.de wrote:
Interesting datapoint: NetApp Deduplication did only recover about 1%
of storage space with mdbox-based mail storage, while on an
maildir-based mail storage, the rate was about 15%. (This was tested
with a copy of
Just a guess, but I expect the difference is because NetApp de-dupes
by checksumming blocks and mark whole blocks as duplicates if they
have the same checksum.
True, the start of the message is always at byte 0, but because of
different header length per user for the same message (different
Sven Hartge s...@svenhartge.de wrote:
Interesting datapoint: NetApp Deduplication did only recover about 1% of
storage space with mdbox-based mail storage, while on an maildir-based
mail storage, the rate was about 15%. (This was tested with a copy of
real user data, so is accurate for my
Hi Stan-
(Stan gives a great run-down on the economics of using a NetApp or
even homegrown NFS filer versus using an object storage backend.)
Tom I'm sorry I wasted your time with my initial response.
No, you absolutely didn't waste my time, and it was certainly of great
advantage to
On 1/27/2014 11:25 PM, Thomas Johnson wrote:
Hi Stan-
(Stan gives a great run-down on the economics of using a NetApp
or even homegrown NFS filer versus using an object storage
backend.)
Tom I'm sorry I wasted your time with my initial response.
No, you absolutely didn't waste my
On Jan 24, 2014, at 7:23 PM, Stan Hoeppner s...@hardwarefreak.com wrote:
On 1/24/2014 11:09 AM, Tom Johnson wrote:
Is anybody using the Object Storage plugin for large-scale
installations?
I've not used it.
We're considering it, but are thinking of an in-house
S3 storage system
Sven, why didn't you chime in? Your setup is similar scale and I think
your insights would be valuable here. Or maybe you could repost your
last on this topic. Or was that discussion off list? I can't recall.
Anyway, I missed this post Murray. Thanks Ed for drudging this up.
Maybe this will
Great mail, Stan
Another trick: you can save storage (both space iops) using mdox and
compression. CPU power is far cheaper than iops , the less data you
read/write, the fewer iops.
You can use gzip,bzip2 or even LZMA/xz compression for LDA. If you also
use Single Instace Storage and
Stan Hoeppner s...@hardwarefreak.com wrote:
Sven, why didn't you chime in? Your setup is similar scale and I
think your insights would be valuable here. Or maybe you could repost
your last on this topic. Or was that discussion off list? I can't
recall.
Rather busy right now with a large
Hi,
and some other Dovecot mailing list threads but I am not sure how many users
such a setup will handle. I have a concern about the I/O performance of
NFS in the suggested architecture above. One possible option available to us
is to split up the mailboxes over multiple clusters with
Quoting Urban Loesch b...@enas.net:
Hi,
and some other Dovecot mailing list threads but I am not sure how many
users such a setup will handle. I have a concern about the I/O
performance of
NFS in the suggested architecture above. One possible option available
to us is to split up the
Am 24.01.2014 16:15, schrieb Rick Romero:
- all Backends are in HA with a passive machine and DRBD with 10GBIT
Cross Links
How do you do backups?
The underlying storage is based on lvm. So we can take a daily snapshot on the
passive server,
mount them readonly and have no load impact
On 1/24/2014 6:24 AM, Javier de Miguel Rodríguez wrote:
Great mail, Stan
Another trick: you can save storage (both space iops) using mdox and
compression. CPU power is far cheaper than iops , the less data you
read/write, the fewer iops.
Yeah, the cost of enterprise storage is
This went to me only so bringing back on list.
On 1/24/2014 11:09 AM, Tom Johnson wrote:
Is anybody using the Object Storage plugin for large-scale
installations?
I've not used it.
We're considering it, but are thinking of an in-house
S3 storage system (riak, or ceph, or ?) Looking to
Hi
and some other Dovecot mailing list threads but I am not sure how many
users such a setup will handle. I have a concern about the I/O
performance of NFS in the suggested architecture above. One possible
option available to us is to split up the mailboxes over multiple
clusters with subsets
On 2014-01-23 11:57 AM, Ed W li...@wildgooses.com wrote:
I'm very satisfied and have to highly recommend Timo. His prices were
extremely reasonable and he offered service excellent.
...snip...
Please feel encouraged to employ Timo if you use Dovecot!
I will add a hearty 'seconded!' to this
Hi All,
I am trying to determine whether a mail server cluster based on Dovecot
will be capable of supporting 500,000+ mailboxes with about 50,000 IMAP
and 5000 active POP3 connections. I have looked at the Dovecot
clustering suggestions here:
Am 05.01.2014 14:06, schrieb Murray Trainer:
Hi All,
I am trying to determine whether a mail server cluster based on Dovecot
will be capable of supporting 500,000+ mailboxes with about 50,000 IMAP
and 5000 active POP3 connections. I have looked at the Dovecot
clustering suggestions here:
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