Xsan 2

Setup Guide

K Apple Inc.
2008 Apple Inc. All rights reserved. Under the copyright laws, this manual may not be copied, in whole or in part, without the written consent of Apple. The Apple logo is a trademark of Apple Inc., registered in the U.S. and other countries. Use of the keyboard Apple logo (Option-Shift-K) for commercial purposes without the prior written consent of Apple may constitute trademark infringement and unfair competition in violation of federal and state laws. Every effort has been made to ensure that the information in this manual is accurate. Apple is not responsible for printing or clerical errors. Apple 1 Infinite Loop Cupertino, CA 95014-2084 408-996-1010 www.apple.com Apple, the Apple logo, Mac, the Mac logo, Macintosh, Mac OS, Xsan, and Xserve are trademarks of Apple Inc., registered in the U.S. and other countries. Finder is a trademark of Apple Inc. Intel, Intel Core, and Xeon are trademarks of Intel Corp. in the U.S. and other countries.
PowerPC and the PowerPC logo are trademarks of International Business Machines Corporation, used under license therefrom. Other company and product names mentioned herein are trademarks of their respective companies. Mention of third-party products is for informational purposes only and constitutes neither an endorsement nor a recommendation. Apple assumes no responsibility with regard to the performance or use of these products. The product described in this manual incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited. Apparatus Claims of U.S. Patent Nos. 4,631,603, 4,577,216, 4,819,098 and 4,907,093 licensed for limited viewing uses only. Simultaneously published in the United States and Canada. 034-4261-A/2008-01-16

Contents

Setting Up a SAN
Is This the Right Guide for You? Equipment Youll Need What You Need to Know SAN Setup Instructions Step 1:Unpack and Install the SAN Hardware Step 2:Connect the SAN Networks Step 3:Set Up the Client Computers Step 4:Set Up the Standby Metadata Controller Step 5:Set Up the RAID Systems Step 6:Create a Metadata Array Step 7:Set Up the Primary Metadata Controller Step 8:Configure the SAN Step 9:Set Up a SAN Volume Whats Next?
Follow the instructions in this guide to set up a volume on a storage area network (SAN) using Xsan 2.
Is This the Right Guide for You?
To keep setup instructions simple, this guide assumes: You are setting up a SAN for the first time using new computers and RAID systems right out of the box
Youll let Xsan set up a SAN directory service on your metadata controllers Youll use the MacOSX Server setup assistant to create SAN user accounts Youll choose a standard SAN volume type and let Xsan organize your storage pools Youll let the Xsan setup assistant configure your private metadata network settings
If you want to reuse existing computers while following this guide, you need to perform a clean installation of MacOSX v10.5 or MacOSX Server v10.5 or later on each of the computers before you begin. If you want more control over the underlying organization of your SAN volumes or directory services, you can find more general instructions in the Xsan 2 Administrators Guide on the Xsan Install Disc and at www.apple.com/server/documentation.
If you already have a SAN that you want to upgrade to Xsan 2, youll find instructions in the Xsan 2 Migration Guide at www.apple.com/server/documentation.

Equipment Youll Need

To set up a SAN using the instructions in this guide, you need:
RAID storage devices for SAN storage Two computers running MacOSX Server v10.5 to act as SAN metadata controllers One or more SAN client computers running MacOSX v10.5 or MacOSX Server v10.5 An Intel or PowerPC G5 processor and at least 2 GB of RAM in each SAN computer An additional 2GB per SAN volume in each metadata controller that hosts more than one SAN volume An Apple Fibre Channel PCI, PCI-X, or PCI-E card installed in each SAN computer A Fibre Channel switch and cables for all storage devices and computers An Ethernet switch and cables for the private SAN metadata network A second Ethernet switch and cables for public intranet and Internet access An equipment rack for your RAID storage systems and Xserve computers

A list of qualified RAID systems and Fibre Channel switches is available on the Xsan website at www.apple.com/xsan

What You Need to Know

Youll need to provide the following information when you set up your SAN: A static (fixed) public IP address, subnet mask, router address, and DNS server address for each computer on the SAN. You can enter this information manually or configure a DHCP server to provide some or all of it. If you want the DHCP server to provide IP addresses, it must always assign the same IP address to each SAN computer.
A single user name and password that will be used for the administrator account on

all SAN computers.

A unique user name and password for each user who will log in to a client computer. An Xsan serial number for each computer on the SAN.

Setting Up a SAN

Ethernet (private)

Ethernet (public)

Metadata controller Clients

Standby controller

Ethernet switches

Fibre Channel switch

RAID arrays (LUNs)
Metadata RAID array (LUN) Intranet/ Internet

SAN Setup Instructions

Follow the instructions on the following pages to set up your SAN for the first time. Summary 1 Unpack and Install the SAN Hardware 2 Connect the SAN Networks 3 Set Up the Client Computers 4 Set Up the Standby Metadata Controller 5 Set Up the RAID Systems 6 Create a Metadata Array 7 Set Up the Primary Metadata Controller 8 Configure the SAN 9 Set Up a SAN Volume
Step 1:Unpack and Install the SAN Hardware
To install the components of your SAN, follow the instructions that come with each computer, RAID storage system, and switch. Dont turn on any of the equipment until you are instructed to do so. 1 Unpack each computer that will be part of the SAN. 2 If you need to install Fibre Channel or Ethernet cards in any of the computers, follow the instructions that come with the computer to install the card. 3 If you are using Xserve computers, follow the instructions that come with them to install them in a rack.
4 Unpack the RAID systems that will provide your SAN storage and follow the instructions that come with the systems to install them in a rack. 5 Unpack and install the Fibre Channel switch, following the instructions that come with the switch. 6 Unpack and install the Ethernet switches for the SANs private metadata network and public intranet or Internet connections.
Step 2:Connect the SAN Networks
Use Fibre Channel and Ethernet cables to connect the SAN computers and storage devices to the Fibre Channel and Ethernet switches. Apple-qualified switches are ready to use right out of the box with no special configuration. 1 Turn on the Fibre Channel switch and connect each SAN computer to the switch using one or two Fibre Channel cables. 2 Connect the Fibre Channel ports on each RAID storage unit to the Fibre Channel switch. For details, see the instructions that come with the RAID system. 3 Turn on the Ethernet switches and connect the first Ethernet port on each SAN computer to the public Ethernet switch using an Ethernet cable. 4 Connect the second Ethernet port on each SAN computer to the private metadata Ethernet switch using a second Ethernet cable. 5 Connect the Ethernet ports on each RAID storage system to the public Ethernet switch. For details, see the instructions that come with the RAID storage system.

Step 3:Set Up the Client Computers
Now youll go to each client computer to set up an administrator account, configure network settings, and install the Xsan software. The procedure differs based on whether the client has MacOSX or MacOSX Server installed. Use one of the next two proceduresIf a Client Has MacOSX Installed or If a Client Has MacOSX Server Installedas appropriate on each client computer on the SAN. When you finish setting up the client computers, they are ready to join the SAN and will be detected automatically during SAN setup. After you finish setting up client computers, go on to Step 4, Set Up the Standby Controller Metadata. If a Client Has MacOSX Installed 1 Turn on the client computer. 2 Follow the Mac setup assistants onscreen instructions to set up the computer. Pay special attention to the information in the following panes: Select Your Admin Account:If this pane appears, select Create a local user account to administer this computer. Connect to MacOSX Server:If this pane appears, deselect the Use the following MacOSX Server option and click Continue. Create Your Account:Enter the administrator account name and password that you plan to use on all SAN computers. To simplify SAN setup, use the same administrator name and password on all computers in the SAN. 3 When the Mac setup assistant finishes and the Finder appears, choose System Preferences from the Apple () menu.
4 Click Network and select the first Ethernet port, which should be connected to your public intranet and the Internet. Choose a configuration method from the pop-up menu and then enter the appropriate settings for the client computer. See What You Need to Know on page 7. You can choose:
Manually, and then enter the static public IP address, subnet mask, router address,
and DNS server address for the client computer
Using DHCP with manual address, and then enter the client computers IP address,
if your DHCP server will provide the other TCP/IP connection settings
Using DHCP, if your DHCP server will provide the client computer a static IP address
and the other connection settings Dont configure the port connected to the private metadata networkthe Xsan setup assistant will configure it for you. 5 In Date & Time preferences, configure the computer to set the date and time automatically using a time server. 6 Insert the Xsan Install Disc, double-click the Install Xsan.mpkg icon, and then follow the onscreen instructions to install the Xsan software on the client computer. 7 Eject the Xsan Install Disc. If a Client Has MacOSX Server Installed 1 Turn on the client computer. 2 Follow the MacOSX Server setup assistants onscreen instructions to set up the computer. Pay special attention to the information in the following panes: Server Configuration:Select Advanced.

Administrator Account:Enter the same account name and password on all of your client computers. Network Address:If this pane appears, select No, configure network settings manually. Network Interfaces:Enable only the public Ethernet port. Disable the Ethernet port connected to the private metadata networkthe Xsan setup assistant will configure it for you. If you are setting up an Intel-based Xserve, you can also enable the lights-out management port. TCP/IP Connection (public Ethernet port):Choose a configuration method from the pop-up menu and then enter the appropriate settings for the client computer. See What You Need to Know on page 7. You can choose:
and the other connection settings Time Zone:To ensure consistent time metadata across all computers in the SAN, choose a network time server for your client computers. 3 Insert the Xsan Install Disc, double-click the Install Xsan.mpkg icon, and then follow the onscreen instructions to install the Xsan software on the client computer. 4 Eject the Xsan Install Disc.
Step 4:Set Up the Standby Metadata Controller
Now set up the standby metadata controller. This computer must have MacOSX Server installed but not yet set up. 1 Turn on the computer you are using as the standby metadata controller. 2 Follow the MacOSX Server setup assistants onscreen instructions to configure the computer. Pay special attention to the settings in the following panes: Server Configuration:Select Xsan Metadata Controller.
Administrator Account:Enter the same account name and password that you used on all of your client computers. Network Address:If this pane appears, select No, configure network settings manually. Network Interfaces:Enable only the public Ethernet port. Disable the Ethernet port connected to the private metadata networkit will be detected and configured by the Xsan setup assistant. If you are setting up an Intel-based Xserve, you can also enable the lights-out management port. TCP/IP Connection (public Ethernet port):Choose a configuration method from the pop-up menu and then enter the appropriate settings for the standby metadata controller. See What You Need to Know on page 7. You can choose:
and DNS server address for the computer
Using DHCP with manual address, and then enter the computers IP address, if your
DHCP server will provide the other TCP/IP connection settings Time Zone:To ensure consistent time metadata across all computers in the SAN, choose the same network time server you chose for your client computers.
Xsan Controller Type:Select Standby Xsan Metadata Controller.
3 When prompted, insert the Xsan Install Disc and follow the onscreen instructions to install Xsan. The standby metadata controller is now ready to join the SAN and will be automatically detected by the primary metadata controller during SAN setup.

Step 5:Set Up the RAID Systems
Now configure your RAID systems. Xsan sees the RAID arrays provided by the RAID systems as Fibre Channel logical unit numbers (LUNs) that can be combined to create SAN volumes. 1 Follow the instructions that come with your RAID systems to turn them on and configure their network, management, and security settings. 2 If your RAID systems come with RAID sets already configured, theyll be automatically detected during SAN setup, and you can skip to Step 6, Create a Metadata Array. Otherwise, use the management software that comes with the RAID system to create arrays that are the same size, leaving three drives on one system unassigned so you can create a small, separate metadata LUN as described in the next step.
Step 6:Create a Metadata Array
Ten gigabytes (GB) of disk space is enough to store the metadata for a volume containing 10 million files, so a two-drive RAID 1 (mirrored) array is generally large enough to store the metadata for your SAN volume. If you dedicate a spare drive to this array to guarantee availability, then three drives are adequate for your SAN metadata. If all of your RAID arrays consist of four or more drives, you can follow these steps to convert one of these existing arrays into a small metadata array so you can reuse the extra drives. 1 If you dont have three spare drives or if all of the drives in your RAID systems already belong to RAID arrays, use the management application for your RAID system to delete an existing array. You can run the application on the standby metadata controller or on a client that youve already set up. 2 Use two of the drives to create a new two-drive RAID 1 (mirrored) array.

Setting Up a SAN 17

3 Assign a third drive as a dedicated spare for the array. 4 You can use any leftover drives from the original array to create a separate array, or save them for use as spares. You now have a new two-drive RAID 1 array for storing SAN metadata. Youll add this LUN to your metadata storage pool when you create your SAN volume.
Step 7:Set Up the Primary Metadata Controller
Now that youve prepared your SAN clients, standby metadata controller, and RAID storage systems, youre ready to set up the primary metadata controller. This computer must have MacOSX Server installed but not yet set up. 1 Turn on the computer that will be the primary metadata controller. 2 Follow the MacOSX Server setup assistants onscreen instructions to configure the computer. Pay special attention to the following panes:
Server Configuration:Select Xsan Metadata Controller.
Administrator Account:Enter the same administrator account name and password that you used for your SAN clients and standby metadata controller. Network Address:If this pane appears, select No, configure network settings manually.

Network Interfaces:Enable only the public Ethernet port. Disable the Ethernet port connected to the private metadata networkthe Xsan setup assistant will configure it for you. If you are setting up an Intel-based Xserve, you can also enable the lights-out management port. TCP/IP Connection (public Ethernet port):Choose a configuration method from the pop-up menu and then enter the appropriate settings for the primary metadata controller. See What You Need to Know on page 7. You can choose:
Manually, and then enter the static public IP address, subnet mask, and router

address for the computer

DHCP server will provide the other TCP/IP connection settings Time Zone:To ensure consistent file metadata, choose the same network time server you chose for the other computers in the SAN.
Xsan Controller Type:Select Primary Xsan Metadata Controller.
Users and Groups:Select Manage users and groups with Xsan Admin. Add User Accounts:Select Add new user accounts now. Add New User Accounts:Enter a user name, short name, and password for each user who will log in to a client computer.
3 When prompted, insert the Xsan Install Disc and follow the onscreen instructions to install Xsan. When Xsan finishes installing, the Xsan setup assistant opens automatically. Continue with the next step.

Step 8:Configure the SAN

The Xsan setup assistant opens automatically when basic server configuration and Xsan installation are complete. Follow these steps to enter basic SAN settings. 1 In the Introduction pane, click Continue.
2 In the Initial SAN Setup pane, select Configure new SAN.
3 In the SAN Settings pane, type a name for the SAN, and then enter the SAN administrators name and email address.
4 In the Add Computers pane, make sure all the computers that you want to be in the SAN are selected. If a computer you want to include isnt listed, make sure you have installed Xsan on that computer, check that it is connected to both Ethernet networks, and check the network settings in the computers Network preferences. You can also click Add Remote Computer to add computers manually.

5 In the Authenticate SAN Computers pane, select Use same authentication information for all SAN Computers and enter the user account name and password you entered on the clients and the standby metadata controller.
6 In the Serial Numbers pane, enter your Xsan serial numbers. You can click Add Serial Number and type a number, or drag a text file containing serial numbers to the list.
7 In the Choose Metadata Controllers pane, select only your primary and standby metadata controllers. Deselect any client-only computers that appear in the list.
8 In the Private Metadata Network pane, select Yes, manage private Ethernet network settings.
9 Review the Summary pane, and if all settings are correct, click Continue. To change a setting, click Go Back until you reach the pane where you can correct the setting. Then click Continue until you return to the Summary pane.
Step 9:Set Up a SAN Volume
When the Xsan setup assistant finishes basic SAN configuration, it asks if you want to set up a volume. 1 In the Create Volume pane, select Create a volume now and click Continue.
2 In the Volume Name and Type pane, type a name for the volume and choose a volume type that matches the type of work the volume will support.
3 If the Label LUNs pane appears, select Automatically label all unlabeled LUNs with prefix and click Continue. When the list of labeled LUNs appears, verify the LUN labels and click Continue.
4 In the Configure Volume Affinities pane, drag LUNs from the left column to the corresponding affinity tag in the right column. a Drag the special metadata LUN you created (in Step 6, Create a Metadata Array) to the MetadataAndJournal affinity tag. b Drag your other LUNs to the other affinity tags. To avoid wasting storage, all LUNs assigned to an affinity tag should be the same size. c When you finish, click Continue.
5 In the Volume Failover Priority pane, ensure that the primary metadata controller is at the top of the list, and then click Continue.
6 In the Setup Complete pane, click Continue. Xsan Admin displays a summary of your SAN configuration and the new volume is mounted and ready to use in the Finder on all clients and metadata controllers.

Whats Next?

Your SAN volume is now ready to use. When any SAN user logs in to a client computer, theyll see the volume in the Finder. For information about using and managing the SAN, see the Xsan 2 Administrators Guide on the Xsan Install Disc and at www.apple.com/server/documentation. This guide includes topics such as: Controlling access to files and folders on SAN volumes
Setting folder affinities Managing available space with user quotas Monitoring the status of the SAN and its volumes
You can also find information about these and other tasks in the onscreen help. Open Xsan Admin and choose Help > Xsan Admin Help.

The Xsan 2 Administration Exam Skills Assessment Guide

To Register

This exam is offered at Apple Authorized Training Centers worldwide. For information on exam registration, please visit training.apple.com/ certification. To learn more about Apple training offerings that can help you prepare for certification, please visit training.apple.com.
The Xsan 2 Administration Exam (Prometric exam no. 9L0-622) is a computer-based test offered at Apple Authorized Training Centers. The exam earns Xsan 2 Administration certification. You may take up to two hours to complete the exam, which consists of 77 multiplechoice questions that are based on the objectives listed in this guide. The score required to pass is 75 percent. Eight demographic questions are presented but are not scored. To prepare for the exam, read through the objectives in this guide to determine which areas you need to review. The primary reference source for this exam is the book: Apple Training Series: Xsan 2 Administration (Peachpit 2008). You will not have access to any resources or references during the exam. Please note that the exam is based on Mac OS X and Mac OS X Server version 10.5.5, and Xsan version 2.1, which were the most current versions available at the time of publication. All references to Mac OS X, Mac OS X v10.5, Mac OS X Server, and Mac OS X Server v10.5 refer to version 10.5.5, and references to Xsan 2 refer to version 2.1. The number of test questions drawn from each knowledge area is indicated below. Please note that although this guide divides the objectives into six knowledge areas, questions are presented randomly during the exam. Also note that Unix commands and processes are shown in monospace font in the exam.

Concepts

This topic has 11 items, drawn from the following objectives: Without references, identify the similarities and differences among various storage architectures, including direct-attached, network-attached, distributed, and SAN storage architectures, and describe several advantages specific to an Xsan file system, including concurrent access, high availability, and shared storage. Without references, identify the common hardware components of an Xsan storage area network, including types of targets and initiators, and Fibre Channel fabric switches. Without references, describe how the SAN hardware components work together to create an Xsan storage area network. Without references, identify the key features of the Xsan 2 version of Apple's Xsan software, including MultiSAN, Spotlight comments, and simplified administration tools.
Skills Assessment Guide Xsan 2 Administration Exam

Planning

This topic has 8 items, drawn from the following objectives: Without references, identify the recommended hardware for a basic Xsan deployment. Given a description of the hardware available for a basic Xsan deployment, identify the recommended software configuration for the deployment. Given a description of the amount of data to be stored or performance required, determine the amount of storage necessary for the deployment. Given the storage and performance characteristics for a specific storage solution, identify the best SAN volume type for the deployment. Given the storage and performance characteristics for a specific storage solution, determine the hardware requirements of the deployment. Given the storage and performance characteristics for a specific storage solution, determine the software requirements of the deployment. Given the storage and performance characteristics for a specific storage solution, identify the correct configuration for Apple Xserve RAID LUNs of the deployment. Given the storage and performance characteristics for a specific storage solution, identify the correct configuration for Promise RAID LUNs of the deployment.

Deployment

This topic has 15 items, drawn from the following objectives: Without references, describe the steps of the process of configuring a Fibre Channel network. Without references, describe the steps of the process of configuring a RAID array for use with Xsan. Without references, state the role of volume affinities during initial configuration of an Xsan volume. Without references, configure the Fibre Channel switch for a deployment. Without references, configure the public and metadata Ethernet network on an Xsan SAN. Given a list of DNS entries and IP addresses, configure a local DNS server with entries for Xsan controllers and clients. Given a description of the performance and storage requirements of a SAN, and the necessary hardware and software, configure an Xsan volume to meet those requirements. Given a functional Fibre Channel network, compatible Macintosh computers connected to that network, and the Xsan 2 software, configure several Xsan clients according to Apple best practices. Given a functional Fibre Channel network, compatible Macintosh computers connected to that network, and the Xsan 2 software, configure a primary metadata controller and directory services using Mac OS X Server Setup Assistant. Given a functional Fibre Channel network, compatible Macintosh computers connected to that network, and the Xsan 2 software, create a new Xsan SAN using Xsan Admin. Given a functional Ethernet network, and computers and a time server connected to that network, configure the computers to use the time server.

Client Management

This topic has 18 items, drawn from the following objectives: Without references, describe the steps of the process for moving a client system to a new SAN. Without references, describe the various methods used to control user access to information on Xsan volumes, including volume mounting with Xsan Admin, POSIX permissions, and ACLs. Without references, state the purpose of affinities in relation to controlling user access to information on SAN volumes, and how those affinities are implemented. Without references, describe how quotas are used in Xsan. Without references, describe the steps of the process for mapping Windows User and Group IDs. Without references, identify how Xsan metadata controllers communicate to implement failover. Without references, identify compatible versions of Xsan and Quantums StorNext file system. Without references, describe the steps of the process for adding a Quantum client to an Xsan-controlled SAN. Given a functioning Xsan SAN and an available Xsan client, add the client system to the Xsan SAN using Xsan Admin. Given a functioning Xsan SAN and an available Xsan client, mount the Xsan volume on the Xsan client using Xsan Admin. Given a functioning Xsan SAN, add a user to the Xsan SAN using Xsan Admin. Given a functioning Xsan SAN, add a group using Xsan Admin. Given a functioning Xsan SAN, configure default permissions for a user on the Xsan volume using Xsan Admin. Given a functioning Xsan SAN, configure ACLs on the Xsan volume using Xsan Admin. Given a functioning Xsan SAN, configure quotas and permissions on the Xsan volume using Xsan Admin. Given a functioning Ethernet network, a Mac OS X v10.5 directory server, and a Macintosh client with Mac OS X Server administration tools installed, create a local home folder on the client for a network account using Workgroup Manager. Given a functioning Ethernet network, a Mac OS X v10.5 directory server, and a Macintosh client, create a portable home directory for a network account using Workgroup Manager.

Volume Management

This topic has 6 items, drawn from the following objectives: Without references, identify the different types of information provided by Xsan Admin for monitoring an Xsan volume, including volume status, available space, and network traffic. Without references, describe the steps of the process for changing the IP address of a metadata controller.
Without references, identify the various tools provided by Apple and Promise for monitoring the performance of storage volumes. Given a functioning Xsan SAN, add a standby metadata controller using Xsan Admin. Given a functioning Xsan SAN, reconfigure the controller failover priority of the SAN volume using Xsan Admin. Given a functioning Xsan SAN, determine which controller is hosting the Xsan volume, using Xsan Admin or the cvadmin command-line tool. Given a functioning Xsan SAN, cause an Xsan volume to failover from the primary metadata controller to another metadata controller using Xsan Admin or the cvadmin command-line tool. Given a functioning Xsan SAN, control computers on the SAN using Xsan Admin. Given a functioning Xsan SAN, change the metadata controller's IP address using System Preferences or the changeip command-line tool. Given a functioning Xsan SAN, monitor the Xsan volume using Xsan Admin. Given a functioning Xsan volume comprised of Xserve RAID LUNs, monitor the Xserve RAID sets in the Xsan volume using RAID Admin. Given a functioning Xsan volume comprised of Promise RAID LUNs, monitor the Promise RAID sets in the Xsan volume using the Promise Web utility. Given a functioning Xsan SAN, customize Xsan status notifications using Xsan Admin.
Maintenance & Troubleshooting
This topic has 20 items, drawn from the following objectives: Without references, identify common SAN troubleshooting techniques, including verifying connections, reading log files, validating configurations, and using command-line tools. Without references, identify the role of fsm and fsmpm in an Xsan volume. Without references, describe the contents, function, and relationships of the files in the /Library/Filesystems/Xsan/config directory. Without references, identify the methods by which you can increase the storage on an Xsan SAN, including adding LUNs, storage pools, and volumes, and describe the steps of the process. Without references, describe the steps of the process of managing folder affinities. Without references, identify possible repercussions and advantages of modifying an Xsan 2 volume's advanced volume settings using Xsan Admin that is installed with Xsan 2, including repercussions such as performance issues, or corruption, and advantages, such as gaining the ability to customize volume settings. Without references, list the changes to an Xsan 2 volume that will cause a loss of data, including renaming a LUN, or storage pool, or changing a storage pool's stripe breadth, or changing the volume's block allocation size. Without references, list all the limits and capacities of an Xsan volume, including number of LUNs and storage pools, and volume name length. Without references, identify the steps of the process for destroying an Xsan volume using Xsan Admin.

Without references, identify the steps of the process of repairing an Xsan volume using the cvfsck command-line tool. Without references, identify the backup solutions and strategies that are practical and compatible for use with Xsan, including cvcp, rsync, and Information Lifecycle Management. Without references, identify the location of all log files pertinent to the Xsan file system. Given a functioning Xsan SAN, add a LUN or a storage pool to the Xsan volume using Xsan Admin. Given a non-functioning Xsan 2 volume, troubleshoot and repair the volume using the cvfsck and snfsdefrag command-line tools. Given a functioning Xsan SAN, configure folder affinities on the Xsan volume using Xsan Admin. Given a functioning Xsan SAN, start and stop the Xsan file system using the cvadmin command-line tool. Given a functioning Xsan SAN, mount and unmount the Xsan volume using the xsanctl command-line tool. Given a Mac OS X v10.5.5 computer with Xsan 2.1 installed, view the man pages for the cvcp command using Terminal. Given a functioning Xsan SAN, copy files from the Xsan volume to an Xsan client's internal hard disk while preserving their extended attributes using the cvcp command-line tool. Given a functioning Xsan SAN, copy files from the Xsan volume to an Xsan client's internal hard disk while preserving their extended attributes using the rsync command-line tool. Given a functioning Xsan SAN, back up the configuration of the Xsan volume using the cvgather command-line tool.

For More Information

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2008 Apple Inc. All rights reserved. Apple, the Apple logo, Mac, Mac OS, Mac OS X, Mac OS X Server, Xserve RAID, and Xsan are trademarks of Apple Inc., registered in the U.S. and other countries. Other product and company names mentioned herein may be trademarks of their respective companies. Mention of nonApple products or services is for informational purposes only. Product specifications are subject to change without notice. October 2008