Mirror /var/spool

[Tom Combs]

Hello,

  I'm setting up a new mail server (sunfire v120, solaris 9, sendmail,
  mailscanner, spamassasin and mcafee)

  I will be mirroring the /var/mail disk.  I was also planning on mirroring
  all of the system drive (everything but /var/mail) but I'm wondering if
  it makes sense to mirror /var/spool.  Would I be better off performance
  wise if I make /var/spool a seperate file system and do not mirror it?

  I don't really care about mirrored log files and don't think the lose
  of the mail queues will be very drastic if I lose a drive.  I would think
  that avoiding the multiple writes by not mirroring /var/spool would be
  a plus.  This is software raid 1 which probably isn't as efficient as
  hardware raid.

  Thanks,   Tom Combs