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IHAC that has 560+ LUNs that will be assigned to ZFS Pools
and some level of protection. The LUNs are provided by seven Sun StorageTek
FLX380s. Each FLX380 is configured with 20 Virtual Disks. Each Virtual Disk
presents four Volumes/LUNs. (4 Volumes x 20 Virtual Disks x 7 Disk Arrays
= 560 LUNs in total) We want to protect against all possible scenarios including the
loss of a Virtual Disk (which would take out four Volumes) and the loss of a
FLX380 (which would take out 80 Volumes). Today the customer has taken some number of LUNs from each
of the arrays and put them into one ZFS Pool. They then create R5(15+1) RAIDz virtual
disks (??) manually selecting LUNs to try and get the required level of
redundancy. The issues are: 1) This
is a management nightmare doing it this way 2) It
is way too easy to make a mistake and have a RAIDz group that is not configured
properly 3) It
would be extremely difficult to scale this type of architecture if we later
added a single FLX380 (6540) to the mix I do not yet understand ZFS but I have some ideas on how I
think it works and it seems to me that surely ZFS can handle this in a more eloquent
manner than what the customer is doing today. So while I am coming up to speed
on how to architect solutions using ZFS can any one of you help me think this
through to make sure the customer meets all of their objectives? This is somewhat of a time sensitive situation. Ted Oatway NOTICE: This email message is for the sole use of the
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