Adaptec DuraStor 7200S User manual

USER’SGUIDE
DURASTOR 7200S LUN ZONING
DuraStor 7200S LUN Zoning.book Page 1 Tuesday, July 23, 2002 4:14 PM

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1
Using LUN Zoning
In this Guide
To increase flexibility and provide more effective partitioning of
your storage infrastructure, the Adaptec DuraStor 7200S controller
supports LUN zoning. Using LUN zoning, you can allow a host to
access a specific set of LUNs on an array while restricting access to
other LUNs in that array. You use the Adaptec Disk Array
Administrator to define which hosts have access to each particular
LUN. This guide provides step-by-step instructions.
Before You Begin 2
An Overview of How It Works 2
A Working Example 3
Viewing Known WWNs 4
Creating Names for WWNs 5
Configuring LUN Zoning 6
Changing All Partitions to Include All Hosts 9
Deleting a Partition 10
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DuraStor 7200S LUN Zoning User’s Guide
Before You Begin
Before you set up LUN zoning, you should know the World Wide
Name (WWN) for each host that you want to set up. Your SAN
administrator should know the WWNs for your network.
An Overview of How It Works
To use your controller’s LUN zoning feature, you’ll be performing
these three main tasks:
■View the WWNs. You can display a list of the last 16 WWNs that
the controller is aware of on the SAN (page 4).
■Give each WWN an easy-to-recognize name (alias) to make
LUN zoning faster and easier to work with (page 5 ).
■Set up LUN zoning by either excluding or including hosts on a
list for each partition LUN (page 6). The list can include or
exclude up to 16 specific hosts. You can also include all hosts for
each particular LUN (page 9).
The LUN zoning feature also allows you to delete partitions you no
longer want to use (page 10).
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A Working Example
A Working Example
The following figure shows you an example of how you can use
LUN zoning. In this example:
■Array A has two partitions. Partition 1 has an include list that
contains only Accounting, so only the Accounting host can
access partition 1.
■Array B, partition 3 has an exclude list that contains only the
Web host, so all hosts except the Web host can access the
partition.
■Array C uses the default setting, Include All Hosts, so all hosts
can access the array.
Web host
Engineering
Accounting
HR
Array C
A single partition array that all
hosts can access
Array B
HR & Accounting can
access Partition 2
Array A
Accounting can access Partition 1
Array A
HR can access Partition 2 Array B
Engineering can access
Partition 1
Array B
All hosts except the Web host
can access Partition 3
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DuraStor 7200S LUN Zoning User’s Guide
Viewing Known WWNs
You can view a list of 16 host WWNs that the controller is aware of
on your SAN. The controller is aware of any host that was booted
since the controller was last restarted. Typically, hosts scan for
devices during their boot process. When this happens, the
controllers saves the WWN information for the host and retains the
information even after you reboot the controller. The list includes
the last 16 hosts that booted or that you named.
You can determine which WWN is for which host by booting one
host at a time and then viewing the WWN list. The most recently
booted host is listed first. To make LUN zoning easier to manage,
you can give the hosts names you recognize (see page 5).
To view known WWNs:
1From the System Menu, select Configuration Menu, then press
Enter.
The Configuration Menu appears.
2Select General LUN Zoning, then press Enter.
The General LUN Zoning menu appears.
3Select Display Host List, then press Enter.
The Display Host List appears, showing the last 16 WWNs
known to the controller. The WWNs are listed according to
when they were booted. The most recently booted host is listed
first.
Note: A host’s WWN can be placed at the top of the known
hosts list whenever the host performs a device discovery or
bus scanning type of operation.
4Press Esc to return to the previous menu.
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5
Creating Names for WWNs
Creating Names for WWNs
To make LUN zoning easier to manage, you can assign names, or
aliases, to the hosts. For example, you can use a computer name
that has already been assigned. You can determine which WWN is
for which host by booting one host at a time and then viewing the
WWN list. The most recently booted host is listed first.
You can name up to 63 hosts, but you can only view the last 16
hosts that booted or that you named. The list is updated as you
name or reboot hosts. Names are stored on the controller, so if you
change controllers, you’ll need to rename the hosts.
To create or change names for WWNs:
1From the System Menu, select Configuration Menu, then press
Enter.
The Configuration Menu appears.
2Select General LUN Zoning, then press Enter.
The General LUN Zoning menu appears.
3Select Add or Name Host, then press Enter.
The Add or Name Host screen displays the last 16 known
WWNs and host names that you have set up. For more
information, see Viewing Known WWNs on page 4.
If the controller is not aware of any WWNs, the list is empty.
Select Enter New Host to enter a WWN.
Note: The controller doesn’t typically assign a default name to
a WWN. However, in some cases, the name defaults to the
name of the manufacturer of the host bus adapter (HBA),
enclosed in angle brackets. For example, an Adaptec HBA has
a default name of <Adaptec>.
4Select the WWN you want to name, then press Enter.
The Enter Host Name screen appears.
5Enter the name (alias) you want, then press Enter. You can use
up to 16 characters. You can include any characters in the name,
including spaces.
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DuraStor 7200S LUN Zoning User’s Guide
Configuring LUN Zoning
Once you set up host names (aliases), you can easily set up your
LUN zoning. This is where you determine which hosts can access
each partition LUN.
You set up LUN zoning by either excluding or including hosts on a
list for each partition LUN. The list can include or exclude up to 16
specific hosts or all hosts for each partition LUN.
The zoning information is stored as part of the array’s metadata
using the WWN for each host. If you install a new controller, the
array partition’s LUN zoning remains. The LUN zoning also
remains if you change the partition’s LUN.
Note: Changes to LUN zoning take effect immediately.
Therefore, if a partition is not in use, you should limit access
to it.
To set up LUN zoning:
1Display the Partition Menu.
The Partition Menu screen appears.
From the Array Menu From the All Partitions Menu
1 From the System Menu, select
Array Menu and press Enter.
The Select Array menu
appears.
2 Select the array you want and
press Enter.
That array’s Array menu
appears.
3 Select Partition Menu and
press Enter.
The Select Partition menu
appears.
4 Select the partition you want
and press Enter.
1 From the System Menu, select
All Partitions Menu and press
Enter.
The Select Partition or Free
Area menu appears with a list
of existing partitions and free
space.
2 Select the partition you want
and press Enter.
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Configuring LUN Zoning
2Select LUN Zoning, then press Enter.
The LUN Exclude list or LUN Include list displays. The default
setting for each partition LUN is Include All Hosts. This results in
all hosts being able to access all partitions. You can change the
list type using the Change Zone Type option. See the next step.
Whether you use an include or exclude list depends on your
needs. You may want to determine which list would be shorter
and therefore easier to create.
3Select the option you want, then press Enter. The options
available are:
–Display Host List—Displays a list of the hosts currently on the
include or exclude list for the selected partition. This option
displays hosts only if you have already used Add Host to List
and added one or more WWNs to an include or exclude list.
–Add Host to List—Displays the Enter Host WWN screen
where you enter the WWN or name (alias) or select the host
you want to add to the current list for the selected partition.
The list of WWNs and names that displays contains only the
last 16 hosts that booted or that you named. If you know
other WWNs or names, you can enter the WWN or name.
Enter the WWN or name (alias) or select the host from the list
and press Enter.
–Remove Host from List—Displays the Remove Host from List
screen, which contains a list of the hosts currently on the
include or exclude list for the selected partition. Select the
WWN of the host you want to remove, then press Enter.
–Change Zone Type—Displays the Change Zone Type screen
where you can change the type of zoning to one of four
options described below. Changing the zone type does not
add or remove any hosts in previously created lists.
■Include All Hosts—Permits all hosts on the network to
access the selected array. This is the default zone type. This
results in all hosts being able to access all partitions. If you
have already created an include or exclude list, you can use
this option to override the list. Your existing list is retained
and you can display, add, or remove hosts from the list.
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DuraStor 7200S LUN Zoning User’s Guide
■Include Listed Hosts—Lets you enter or select the WWNs
of the specific hosts you want to access the selected
partition. The list of WWNs and names that displays
contains only the last 16 hosts that booted or that you
named. If you know other WWNs or names, you can enter
the WWN or name.
■Exclude All Hosts—Permits no hosts on the network to
access the selected partition. If you have already created an
include or exclude list, you can use this option to override
the list. Your existing list is retained and you can display,
add, or remove hosts from the list.
■Exclude Listed Hosts—Lets you enter or select the WWNs
or names (aliases) of the specific hosts you do not want to
be able to access the selected partition. The list of WWNs
and names that displays contains only the last 16 hosts that
booted or that you named. If you know other WWNs or
names, you can enter the WWN or name.
If you have changed the LUN zoning, the system asks you to
confirm that you want to make the change.
4Select Yes, then press Enter to make the changes.
The system confirms that the changes are made.
5Press Esc to return to the LUN zoning screen.
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