Apple Xsan 2 (Third Edition) - Manual (Page 47)

Chapter 3 Setting Up a Storage Area Network 47
Spotlight: Enable this if you want Macintosh clients to search the contents of the
volume using Spotlight.
Extended Attributes: Select this option if all computers on your SAN are running
Xsan 2.2 and you want to ensure the best possible performance by storing related
information for each file inside the file itself instead of in separate hidden files.
This option is enabled by default if the SAN consists of all Xsan 2.2 systems.
Access Control Lists: Leave this enabled if you want to use access control lists to
control access to the volume and its contents.
Windows ID Mapping: If you have Windows clients on your SAN, choose how they
map user and group information to the Xsan-compatible user IDs and group IDs they
need to access this volume. For more information, see “Mapping Windows User and
Group IDs” on page 78.
3 In the Configure Volume Affinities pane (or the Configure Volume Storage pane,
if you’re configuring a custom volume type), drag LUNs from the left column to the
corresponding affinity tag (or custom storage pool) in the right column.
a Drag the special metadata LUN you created (in Step 6, “Create a Metadata Array”) to
the MetadataAndJournal affinity tag (or custom storage pool).
b Drag your other LUNs to the other affinity tags (or storage pools). To avoid
wasting storage, all LUNs assigned to an affinity tag (or storage pool) should be
the same size.
c When you finish, click Continue.
For information about the optimal number of LUNs to assign to an affinity tag,
see “Assigning LUNs to Affinity Tags” on page 29.
4 Optionally, you can select an affinity tag and click Settings to change the affinity tag
name or other settings listed below. If you’re creating a custom volume, you can select
it and click Storage Pool Settings to change the storage pool name or other settings
listed below.
Affinity Tag (or Storage Pool Name): Enter the name for the affinity tag (or custom
storage pool). If the OK button is disabled when you finish entering the name, the
name is reserved; try another. For a list of reserved names, see Chapter 8, “Solving SAN
Problems.”
Use for: Choose the types of data that can be stored on storage pools that have this
affinity tag (or that can be stored on the custom storage pool). If the “Only data with
affinity” checkbox is disabled, this might be the only storage pool in the volume that
can store user data without an affinity. You must have at least one storage pool that
isn’t exclusive, that is, a storage pool that can store user data that has no affinity.