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All other brand names or trademarks are the property of their respective owners.
The names of companies and individuals used in examples are fictitious and intended to illustrate the use of the software. Any resemblance to
actual companies or individuals, whether past or present, is coincidental.
PROPRIETARY NOTICE
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Overland Storage assumes no responsibility for the accuracy, completeness, sufficiency, or usefulness of this manual, nor for any problem that
might arise from the use of the information in this manual.
Version 4.4
Overland Storage, Inc.
9112 Spectrum Center Blvd.
San Diego, CA 92123
U.S.A.
This user guide explains how to install, setup, and use your new Overland Storage
SnapSAN S2000 appliance and its SnapSAN Manager Suite software to perform tasks
such as create arrays and logical volumes, modify configuration settings, and take
snapshots.
This guide assumes that you are familiar with computer hardware, data storage, and
network administration terminology and tasks. It also assumes you have basic
knowledge of Internet SCSI (iSCSI), Serial-attached SCSI (SAS), Serial ATA (SATA),
Storage Area Network (SAN), and Redundant Array of Independent Disks (RAID)
technology.
Product Documentation and Firmware Updates
Preface
Overland Storage SnapSAN product documentation and additional literature are
available online, along with the latest release of the SnapSAN S2000 software.
Point your browser to:
http://docs.overlandstorage.com/snapsan
Follow the appropriate link to download the latest software file or document. For
additional assistance, search at http://support.overlandstorage.com
Overland Technical Support
For help configuring and using your SnapSAN S2000, search for help at:
http://support.overlandstorage.com/kb
You can email our technical support staff at techsupport@overlandstorage.com or get
additional technical support information on the Contact Us
This user guide exercises several typographical conventions:
ConventionDescription & Usage
BoldfaceWords in a boldface font (Example) indicate items to select such
as menu items or command buttons.
Ctrl-Alt-rThis type of format details the keys you press simultaneously. In
this example, hold down the Ctrl and Alt keys and press the r key.
NOTEA Note indicates neutral or positive information that emphasizes
or supplements important points of the main text. A note supplies
information that may apply only in special cases—for example,
memory limitations or details that apply to specific program
versions.
IMPORTANTAn Important note is a type of note that provides information
essential to the completion of a task or that can impact the
product and its function.
CAUTIONA Caution contains information that the user needs to know to
avoid damaging or permanently deleting data or causing physical
damage to the hardware or system.
WARNINGA Warning contains information concerning personal safety.
Failure to follow directions in the warning could result in bodily
harm or death.
Menu Flow
Indicator
(>)
Information contained in this guide has been reviewed for accuracy, but not for
product warranty because of the various environments, operating systems, or
settings involved. Information and specifications may change without notice.
Words in bold font with a greater than sign between them
indicate the flow of actions to accomplish a task. For example,
Setup > Passwords > User indicates that you should press the
Setup button, then the Passwords button, and finally the User
button to accomplish a task.
DHCP Server Client Table ............................................................................................................. 3-12
Configuring the Appliance ................................................................................................................ 3-13
Contents
Chapter 4 - Storage Management
Windows SnapSAN Manager Overview .................................................................................................. 4-1
Creating a SnapSAN Disk ........................................................................................................................... 4-2
Backing Up Data ........................................................................................................................................ 4-4
Using Snapshots ..................................................................................................................................... 4-4
Using Replicas ........................................................................................................................................ 4-5
Creating and Replicating a New Disk Simultaneously ............................................................... 4-6
Using Mirroring ....................................................................................................................................... 4-7
Create SnapSAN Disk ........................................................................................................................... 5-4
Disk Create Advanced Settings .................................................................................................... 5-5
Destroy SnapSAN Disk ........................................................................................................................... 5-9
Extend SnapSAN Disk .......................................................................................................................... 5-10
Manage Disk Task ............................................................................................................................... 5-10
Disk Tasks .............................................................................................................................................. 5-11
Rename Disk Task .......................................................................................................................... 5-11
Configure Auto Extension Task .................................................................................................... 5-12
Replicate Disk Task ........................................................................................................................ 5-12
Mirror Disk Task ............................................................................................................................... 5-13
User Interface Preferences ........................................................................................................................ 6-5
About ...........................................................................................................................................................6-6
Hard Disks Category ................................................................................................................................... 7-3
DNS Category ..................................................................................................................................... 7-32
Accessing the Web Management Interface .......................................................................................... 8-1
Overview and Usage ................................................................................................................................. 8-2
Home Tab .................................................................................................................................................... 8-3
Appliance Home Page ........................................................................................................................ 8-3
Content Area Links ............................................................................................................................... 8-3
Actions Available .................................................................................................................................. 8-3
System Tab ................................................................................................................................................... 8-3
System Information ............................................................................................................................... 8-4
Content Area Links ............................................................................................................................... 8-4
Actions Available .................................................................................................................................. 8-4
System Tab Subpages .......................................................................................................................... 8-5
System Configuration ..................................................................................................................... 8-5
System Firmware Upgrade ............................................................................................................. 8-6
Hardware Sensors Information ....................................................................................................... 8-6
System Power Settings .................................................................................................................... 8-7
Set Admin Password ....................................................................................................................... 8-7
System Diagnostics .......................................................................................................................... 8-8
Set System Date & Time .................................................................................................................. 8-9
System License .............................................................................................................................. 8-10
Network Information ........................................................................................................................... 8-12
Content Sections and Links ............................................................................................................... 8-12
Actions Available ................................................................................................................................ 8-13
Content Sections and Links ............................................................................................................... 8-24
Actions Available ................................................................................................................................ 8-25
Content Sections and Links ............................................................................................................... 8-46
Actions Available ................................................................................................................................ 8-47
Other Network Tab Subpages ........................................................................................................... 8-48
Subsystem Information ................................................................................................................. 8-48
Pool Information ............................................................................................................................ 8-49
Create Storage Pool ..................................................................................................................... 8-50
Add Global Hot Spare .................................................................................................................. 8-51
Remove Global Hot Spare ........................................................................................................... 8-52
Content Sections and Links ............................................................................................................... 8-58
Actions Available ................................................................................................................................ 8-58
Other Device Tab Subpages ............................................................................................................. 8-59
Device Information ....................................................................................................................... 8-59
Actions Available ................................................................................................................................ 8-61
Other Device Tab Subpages ............................................................................................................. 8-61
Replicant Information ......................................................................................................................... 8-65
Content Sections and Links ............................................................................................................... 8-66
Actions Available ................................................................................................................................ 8-66
Other Device Tab Subpages ............................................................................................................. 8-66
GNU General Public License .................................................................................................................... C-1
GPL Version 2 ........................................................................................................................................ C-1
Theory of Operation ................................................................................................................................... E-1
System Setup ............................................................................................................................................... E-3
Using the Overland Hardware Provider for VSS ...................................................................................... E-3
Creating a Snapshot ............................................................................................................................ E-4
Exposing a Snapshot ............................................................................................................................. E-4
Example Using VSS ...................................................................................................................................... E-4
Storage Array Logical Drives versus Windows Volumes ......................................................................... E-5
Use of VSS Tools ...........................................................................................................................................E-6
Breaking a Snapshot Set ............................................................................................................................ E-6
This manual describes how to use the Overland Storage SnapSAN S2000 system. The
appliance together with the SnapSAN S2000 software provides a flexible, intelligent,
iSCSI-based storage area network (SAN) solution for virtualized server environments
and the growing demand for data storage. With a SnapSAN S2000 appliance, you can
store, share, protect, and manage data through a single easy-to-use Windows or web
interface.
SnapSAN S2000 Overview
The SnapSAN S2000 has two main components: the appliance and its custom
software.
SnapSAN S2000 Appliance
This is a appliance connected to your local storage area network running the
SnapSAN S2000 software. The appliance manages a RAID controller which, in turn,
manages the physical operation of a group of hard disks. The S2000 makes this
networked disk storage look just like one or more local disks.
SnapSAN Manager Suite Software
This is storage management software that enables you to manage your data storage
effectively and efficiently with no special knowledge about the underlying technology
required. There are two versions available:
•Windows SnapSAN Manager – A Windows program run from a network
computer.
•Web Management Interface – A web-based interface on the SnapSAN that is
The figure below illustrates how the SnapSAN S2000 software can map a set of
independent disk drives, connected to the network by a RAID controller, to a storage
pool from which seemingly “local” disks of user-defined size can be created and shared
by all the users on the network.
Windows SnapSAN Manager
The Windows SnapSAN Manager is a Windows program that provides you with an
easy way to manage your data storage. You can use it to perform the following storage
management tasks:
•Configure your appliance
•Create new disks from storage on the SnapSAN S2000 appliance.
•Protect the data by controlling shared access to it.
•Provide a high level of data security, using the built-in reliability that comes
with RAID technology.
•Monitor the way that data is used and then adapt the data storage to fit this
usage pattern, giving users optimal access to their data.
•Back up data quickly and efficiently using SnapSAN S2000 support for
snapshots, disk replication (optional), and mirroring (optional).
Web Management Interface
The Web Management Interface is a browser-based tool for managing your data
storage. You can use the Web Management Interface to perform the following storage
management tasks:
•Configure your appliance
•Create new disks from storage on a specific SnapSAN S2000 appliance.
•Check the logs for a specific SnapSAN S2000 appliance.
•Verify error or fault messages regarding a specific SnapSAN S2000 appliance.
This chapter explains how to install a SnapSAN S2000 appliance. Sections in this
chapter include:
•First Things First
•SnapSAN
•Powering Up the SnapSAN S2000
S2000 Rack Installation Overview
– Activate Your Warranty!
First Things First – Activate Your Warranty!
Before installing your new unit, it is essential that you activate your Overland
warranty. Technical and warranty support are not available until this is done:
1. Go to the Overland Storage web site at:
http://www.overlandstorage.com/
2. Select Service & Support > My Products.
3. At the Site Login
NOTE: If you are not yet a member, click “New member?” and follow the instructions
given. It’s free and easy!
, enter your email address and password.
4. Under the My Products tab, click Register New.
5. Fill in the information and click Submit.
IMPORTANT: You will receive an email from Overland with your warranty certificate.
Review it carefully and verify that the product and address information is accurate. If
any errors are found, email us at: warranty@overlandstorage.com. Otherwise, follow the
instructions in the email to complete the registration process.
Rotational Speed ARotational Speed BBlank Disk Drive
Unsupported Configurations
Do not include drives
with different RPMs in
the same column.
Rotational Speed ARotational Speed BBlank Disk Drive
Recommended Drive Configurations
Before installing or adding drives to a SnapSAN S2000 appliance, the following must
be observed:
•Different capacity drives can be installed; however, they should not be included
in the same RAID array, because capacity usage for all drives in the RAID is
limited to the capacity of the smallest drive member.
•Drives of different rotational speed (such as, SAS and SATA drives) can be
installed, but they should not be installed in the same column. If you are
combining drives with different speeds, use the figures below to plan where to
place the disk drives.
WARNING: It is recommended that a mechanical lifter (or at least two people) be used
to raise and align the unit to prevent injury during installation. Use care when inserting
or removing a unit into or out of a rack to prevent the accidental tipping of the rack causing
damage or personal injury.
AVERTISSEMENT: il est recommandé que la mécanique lifter (ou au moins deux
personnes) soit utilisé pour élever et d'unifier l'appareil pour éviter des blessures
pendant l'installation. Faites attention lorsque vous insérer ou de retirer une unité d'entrée
ou de sortie d'un support pour empêcher le déversement accidentel de la crémaillère
causant des dommages ou des blessures.
CAUTION: Overland strongly recommends that you install the unit in a clean,
air-conditioned environment with power conditioning and an adequately rated
uninterruptible power supply (UPS). The unit is intended to be grounded.
SnapSAN S2000 User Guide
Power
Button
Reset
Access
Power
NIC 1
Activity
Alert
NIC 2
Activity
IMPORTANT: Before unpacking the unit, ensure that the area is free from conditions
that cause electrostatic discharge (ESD). Discharge static electricity from your body by
touching a known grounded surface. Also, avoid touching pins, leads, or circuitry.
Using the SnapSAN S2000 Quick Install Guide that came in the Accessory Kit, install
the unit in the rack as follows:
1. Install the Rail Kit in a RETMA rack.
2. Insert the SnapSAN S2000 into the rack.
3. Connect the network and data cables.
4. Attach the power cords.
NOTE: A PDF of the Quick Start Guide is available on the Overland Storage web site:
http://docs.overlandstorage.com/snapsan
Powering Up the SnapSAN S2000
The power switch is on the front panel located on the left side bracket. To turn the
appliance ON, press and hold the Power button for no more than one (1) second to
begin the power-up sequence.
After you turn the power ON, the System performs a self-test process, which takes a
couple of minutes.
After the unit completes the POST sequence, check the LED indicators on the left
bracket to verify the network connections are good.
After installing a new SnapSAN S2000 appliance, there are two ways to handle the
initial configuration of an appliance:
•A Windows program (Windows SnapSAN Manager) is installed as part of the
SnapSAN Manager Suite on a network computer and can be used to configure
any SnapSAN S2000 appliance on the network (“
Manager”). This is the recommended procedure.
•The web interface (Web Management Interface) can be accessed by a browser to
configure and operate that specific appliance (“
Interface” on page 3-10). This can be used by any OS such as Linux or Mac.
Using the Windows SnapSAN Manager
Using the Windows SnapSAN
Using the Web Management
Before you can use the Windows SnapSAN Manager, you must make sure an iSCSI
initiator is installed on each Windows host and the SnapSAN Manager Suite software
has been installed.
Installing an iSCSI Initiator
An iSCSI initiator must be installed on each Windows host to access the storage
managed by the Windows SnapSAN Manager.
Windows Server 2003 and XP operating systems do not include an iSCSI initiator as
standard, but the Microsoft iSCSI initiator is available as a free download. To find the
initiator, go to http://www.microsoft.com/downloads
installation instructions that come with the initiator.
If you plan to use a different initiator, follow the instructions provided with it.
Installing SnapSAN Manager Suite Software
NOTE: The SnapSAN Manager Suite software can only be installed by the Administrator or a
user with Administrator privileges.
The SnapSAN S2000 SnapSAN Manager Suite files along with electronic copies of all
the important documents are available from download from the Overland SnapSAN
website:
The installation procedure automatically configures the Windows Firewall to allow
Windows SnapSAN Manager and its Appliance Discovery Service to access TCP and
UDP port 4309 on your computer. If you are using SnapServer Manager (SSM), it
configures access to TCP and UDP port 111.
outgoing access on this port. If your system is behind a NAT interface, you will have to set up
port forwarding to your computer for this port.
NOTE: To install the SnapSAN Manager Suite on a VMware vSphere Client, refer to
Follow the on-window instructions to install the software:
1. Download the appropriate version of the SnapSAN Manager.
2. Double-click setup.exe.
3. At the start window, click Next.
IMPORTANT: If you are using another firewall, open the firewall manually to allow the
Appliance Discovery Service and the Windows SnapSAN Manager incoming and
The progress window is displayed with a Status bar showing the amount
completed. It may take several minutes to complete the installation. When done,
the Next button becomes active.
8. At the completion window, click Finish to exit.
Once the SnapSAN Manager Suite is installed and you click Finish, the program
automatically launches the Windows SnapSAN Manager. Continue with
“
Configuring the Appliance with Windows SnapSAN Manager.”
Configuring the Appliance with Windows SnapSAN Manager
To configure a SnapSAN S2000 appliance using Windows SnapSAN Manager:
1. If not already running, start the Windows SnapSAN Manager by selecting
Windows Start > All Programs > SnapSAN > SnapSAN Manager.
Automatically, Windows SnapSAN Manager tries to discover any appliances
that are connected to the network. During this discovery process, the Discovery
window is displayed and Windows SnapSAN Manager attempts to connect to
any SAN appliances it finds.
•If a connection succeeds, the SnapSAN Appliance Setup Wizard starts to
guide you through the setup process.
•If no appliances were discovered, the Windows SnapSAN Manager
Overview window will open. Recheck your network connections and verify
that the computer is on the same network as the SAN appliance.
6. At the Password window, you must enter a password for the appliance, confirm
it by re-entering it, and then click Next.
IMPORTANT: Overland recommends using a strong password of at least six
alphanumeric characters.
7. At the Pool Creation page, select the type of RAID policy you want.
A pool represents the storage available on a set of disks managed by an
appliance. In effect, it comprises one or more of the physical disks connected to
the RAID controller, managed according to a management policy of your
selection. For the management policy you can specify either Typical or Custom.
NOTE: If you want to configure advanced RAID options, use the Windows SnapSAN
Manager to create the pool (as described in “
SnapSAN Pools Category” on
page 7-4) after the wizard has completed.
The options presented for Custom vary according to the number of physical
disks available and the type of RAID controller card:
When the wizard finishes, the initial (default) Windows SnapSAN Manager window is
displayed showing the new volumes on the S2000 (such as “DSK1_VOL4”).
Chapter 4, “
SnapSAN Manager and also how to set up and manage the SAN.
These other chapters cover specific manager features in more detail:
•Chapter 5, “
•Chapter 6, “Network Management”
•Chapter 7, “Appliance Management”
Storage Management,” describes in general how to use Windows
PC and Servers Management”
Using the Web Management Interface
The web interface to the appliance, Web Management Interface, supports most
common web browsers, including Internet Explorer 7 or 8, and Firefox 3.5. JavaScript
must be enabled in the browser.
To use the built-in Web Management Interface to configure a specific SAN appliance,
it is necessary to know either the network name or network address (the IP
address) of the appliance. To find these, do one of the following:
•If you are not running a DHCP server, connect a keyboard and monitor to the
appliance so that you can assign a network address to it as described in
“
Assigning a Static Network Address” on page 3-11.
•If you are running a DHCP server on the network, find the network address of
the appliance as described in “
page 3-12.
Finding the DHCP Network Address” on
IMPORTANT: If your DHCP server supports reservations, reserve an IP address
for the appliance.
As shipped, the appliance is configured to get its network address using DHCP. If you
are not running a DHCP server, manually set the network address as follows:
1. Connect a monitor and keyboard to the appliance.
The monitor will display the appliance’s Network Information window. This
gives the status of each network interface.
2. If necessary, use the Up and Down arrow keys to highlight the correct network
interface on the left, and press Enter.
The Edit Network Settings dialog box is then displayed.
3. Enter the appliance’s password.
NOTE: For an unconfigured system, “password” is the default preset.
4. Using Tab or the Up and Down arrow keys, move to the DHCP Enabled field,
5. Enter the Static IP Address and Static Netmask for the appliance in the
6. Apply the changes by moving to the Apply box and pressing Enter.
7. Press Esc to quit.
and press Enter to disable DHCP.
appropriate fields.
To quit without applying the changes, move to the Cancel box and Enter.
Continue with “
Configuring the Appliance” on page 3-13.
Finding the DHCP Network Address
You can find the DHCP network address by direct connection to the appliance or using
the DHCP table.
Appliance Monitor Display
Connect a monitor to the video port of the appliance to read the appliance’s network
name and IP address from the appliance information window.
The network name, in the format “SnapSANnnnnnn,” is shown near the top of the
window, and the IP address 192.168.1.140 is shown near the middle of the window.
DHCP Server Client Table
Bring up your DHCP servers client table to read the appliance’s network name and IP
address. The details of doing this depend on the DHCP server being used. However,
there should be an option to display DHCP clients which have been allocated
addresses by the server.
For example, the client table for a Windows 2003 DHCP server:
Locate the entry with a name in the form “SnapSANnnnnnn” and note the name and
the IP address. When you configure the appliance, you can then change the network
name to something more memorable.
IMPORTANT: If your DHCP server supports reservations, reserve an IP address for the
appliance.
It is possible that some DHCP servers will not display network names. In this case,
use the appliance monitor display to get the information as described in “
To connect your web browser to the appliance, enter either the network name or the IP
address into your web browser. With some browsers, you may need to prefix the name
with “https://” (for example, “https://192.168.1.140”). When you configure the
appliance, you can change the network name to something more memorable if you
plan to use it for connection.
To configure your SnapSAN S2000 appliance using the Web Management Interface:
1. Open the Web Management Interface:
a. Enter the network name or IP address of the appliance into the browser
(with some browsers, you may need to preface the name with “http://”).
b. At the login dialog box, enter “admin” for the User Name and “password”
for the Password (you can change this later), and click OK.
NOTE: You may see a warning saying the web site is not trusted and asking you to
confirm whether you want to visit it. You can prevent this happening in future by
downloading the appliance’s security certificate and installing it in your browser.
In order for your browser to trust the secure connection to your SnapSAN S2000
appliance permanently, the CA certificate must be installed in your browser. A
link to the certificate can be found on the System page (see“
System Tab” on
page 8-3).
Installation of the certificate varies according to the browser you are using. With
some browsers, you can simply click the certificate and it will be installed
automatically; on others, you may have to save the certificate and then import it
into the browser, for example, by dragging it to the browser. After installing the
certificate, some browsers may have to be restarted for the connection to
become trusted.
2. At the License Agreement page, read the license agreement, check the
Agreement box to accept it, and click Next.
If you do not accept the license agreement, you will not be able to proceed.
5. Enter the appliance’s network name (also known as the hostname) in the
Identify window, and click Next.
Optionally, you can enter your local network’s Domain Name. The network
name must start with a character (a-z, A-Z), use alphanumeric characters or a
dash (-) character, and must not include any spaces. If you do not supply a
domain name but want to specify an NTP or iSNS server name later, you will
have to supply the fully qualified domain name of the server.
6. At the Password page, change the Administrator Password from its default
value. For security reasons, you must enter a new password. Click Next to
continue.