When setting up an Xsan volume, what must you do if you have Windows clients who are going to need access to the volume?

If you have Windows clients, choose an ID mapping method.
Note: To use ID mapping, Windows clients must be running StorNext 2.7. Xsan controllers and clients must be running Xsan 1.3 or later.

Generate IDs from GUID: Windows clients dynamically generate UIDs and GIDs based on GUID information in an Active Directory domain.

Use IDs from LDAP (RFC 2307): Windows clients get UID and GID values from the uidNumber and gidNumber attributes in Active Directory records.

For more information, see Mapping Windows User and Group IDs on page 112.

Terminal: How to run a Mac OS X package installer on a remote computer

ssh to the remote machine

sudo installer -pkg /tmp/Install_Package_Name.mpkg -target /

Or, if you want to watch the progress of installation, add the -verbose parameter:
$ sudo installer -verbose -pkg /tmp/Install_Package_Name.mpkg -target /

Terminal: how to copy something to a remote computer

scp -r /Volumes/MyVolume/Install_Package_Name.mpkg user@remotehost:/tmp/

this will put the package into the /tmp folder on the remote machine

When setting up a LUN that is larger than 2 terabytes, what must you keep in mind about legacy compatibility?

If you set up a LUN that is larger than 2 terabytes (TB), be aware that older clients (those running Xsan on Mac OS X 10.3 Panther or Xsan 1.2 or earlier on Mac OS X 10.4 Tiger) cannot read these large LUNs. A dialog appears on these older clients that says the LUN is unreadable. Be sure to click Ignore to dismiss this dialog. Do not click Format, or information on the corresponding Xsan volume will be lost. If you use LUNs greater than 2 TB, you should upgrade all SAN clients to Xsan 1.3 or later on Mac OS X or Mac OS X Server v10.4.

When configuring Xsan, If you create users and groups individually on each SAN computer without using a directory service (like Open Directory), what must you do?

If you create users and groups individually on each SAN computer, be sure that each user or group name is assigned the same numeric user ID (UID) or group ID (GID) on all SAN computers. One way to do this is to create an identical list of users and groups in the same order on each computer following a fresh install of the operating system.

Describe how to estimate metadata and Journal Data Storage Needs based on the number of files on a volume

To estimate the amount of space required for Xsan volume metadata, assume that 10 million files on a volume require approximately 10 gigabytes of metadata on the volumes metadata storage pool.