[Dovecot] Maildir messages

Reindl Harald h.reindl at thelounge.net
Fri Jul 13 22:05:03 EEST 2012

Am 13.07.2012 20:45, schrieb Wojciech Puchar:
>> Typical SMB setup it seems.
> True. More - i always try to mix services. No separate "file servers", "mail servers", "whatever" servers but all
> on same. On large install divide by groups of people, not services.
> This way i really cannot get to high IOPS

"cannot" is plain wrong, you are satisfied only by luck

> Seems like you do same ill service like 1000 (or more) mail accounts per hard disks

there is nothing ill

1 Gb Ethernet / iSCSI -> 17200 Random IOPS with RAID10
1 Gb Ethernet / iSCSI -> 9400 Random IOPS with RAID5
1 Gb Ethernet / iSCSI -> 5600 Random IOPS with RAID6

and here ware are at a point where your local disks are outperformed
because they give you typically 100-300 IOPS per disk which you
refused over a complete thread believing you localSATA is the best
thing whichs exists

and yes, the dedicated storage-controllers and caches of a SAN storage
are what is outperforming you at real load

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