ZFS for Cyrus IMAP storage

Gary Mills mills at cc.umanitoba.ca
Sat May 5 08:55:57 EDT 2007

On Fri, May 04, 2007 at 06:35:41PM -0500, Gary Mills wrote:
> There was a question earlier regarding ZFS for Cyrus IMAP storage.  We
> recently converted to that filesystem here.  I'm extremely pleased
> with it.  Our server has about 30,000 users with over 200,000
> mailboxes.  It peaks at about 1900 IMAP sessions.  It currently has 1
> TB of storage with about 300 GB in use.  The server is a Sun T2000
> with 16 GB of memory, running Solaris 10.  It uses iSCSI to provide two
> 500 GB devices from our Netapp filer.  Disk redundancy is all on the
> Netapp because it's currently superior to that provided by ZFS.

I see that I need to clarify this statement.  ZFS' disk redundancy,
which is excellent, is not used in this configuration.  ZFS' disk
management, which also can't be used in this configuration, is
currently incomplete.  Disk management on the Netapp works very

-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-

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