iSCSI vrs Fiber Channel

From SearchSMBStorage: Data storage management is a multifaceted process that is always changing. In this tutorial on SMB storage management, learn about iSCSI versus Fibre Channel storage area networks (SANs), managing your data backups, and the biggest SAN storage management trends for the year ahead. Read this article at SearchSMBStorage:
http://searchsmbstorage.techtarget.com/generic/0,295582,sid188_gci1346117,00.html#

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Backup and restore a Brocade 4900 series fiber switch

brocadeCreating a back up of a configuration file
Keep a backup copy of the configuration file in case the configuration
is lost or unintentional changes are made. You should keep
individual backup files for all switches in the fabric. You should
avoid copying configurations from one switch to another.
To back up a configuration file
1. Open the Switch Administration window as described on
page 59.
2. Click the Configure tab.
3. Click the Upload/Download subtab (see Figure 28 on page 102).
4. Click the Config Upload radio button.
5. Choose whether the download source is located on the network
or a USB device.
• If you select the USB radio button, you can specify a firmware
path. The USB radio button is available if the USB is present
on the switch.
• If you selected the network as the configuration file source,
type the host IP, user name, file name, and password.
You can enter the IP address in either IPv4 or IPv6 format.
6. Type the configuration file with a fully qualified path.
7. Select a protocol to use to transfer the file.
8. Click Apply.
You can monitor the progress by looking at the
Upload/Download progress bar.

Restoring a configuration
Restoring a configuration involves overwriting the configuration on
the switch by downloading a previously saved backup configuration
file. Perform this procedure during a planned downtime.
Make sure that the configuration file you are downloading is
compatible with your switch model, because configuration files from
other model switches might cause your switch to fail.
Maintaining configurations 105
Maintaining Configurations and Firmware
To download a configuration to the switch
1. Open the Switch Administration window as described on
page 59.
2. Disable the switch, as described in “Enabling and disabling a
switch” on page 71.
You can download configurations only to a disabled (offline)
switch. You will only be able to disable the switch if you the
Admin Domain you are logged into owns the switch.
3. Click the Configure tab.
4. Click the Upload/Download subtab (see Figure 28 on page 102).
5. Click the Config Download to Switch radio button.
6. Choose whether the download source is located on the network
or a USB device.
• If you select the USB radio button, you can specify a firmware
path. The USB radio button is available if the USB is present
on the switch.
• If you selected the network as the configuration file source,
type the host IP, user name, file name, and password.
You can enter the IP address in either IPv4 or IPv6 format.
7. Type the configuration file with a fully qualified path.
8. Select a protocol to use to transfer the file.
9. Click Apply.
You can monitor the progress by looking at the
Upload/Download progress bar.

Zoning a Brocade DS_4900B fiber switch

brocadeCreating and populating zone aliases
Use the following procedure to create a zone alias.
To create a zone alias
1. Open the Zone Administration window as described on
page 163.
2. Select a format to display zoning members in the Member
Selection List as described in “Selecting a zoning views” on
page 171.
3. Click the Alias tab and click New Alias.
The Create New Alias dialog box displays.
4. On Create New Alias, type a name for the new alias and click
OK.
The new alias is displayed in the Name drop-down list.
5. Expand the Member Selection List to view the nested elements.
The choices available in the Member Selection List depend on
the selection in the View menu.
6. Click elements in the Member Selection List that you want to
include in the alias.
The Add Member button becomes active.
7. Click Add Member to add alias members.
Selected members move to the Alias Members window.
Managing zone aliases 173
Administering Zoning
8. Optional: Repeat steps Step 6 and Step 7 to add more elements to
the alias.
9. Optional: Click Add Other to include a WWN or port that is not
currently a part of the fabric.
10. Click Actions> Save Config Only to save the configuration
Adding and removing members of a zone alias
Use the following procedure to add or remove zone alias members.
To modify the members of an alias
1. Open the Zone Administration window as described on
page 163.
2. Click the Alias tab.
3. Select the alias you want to modify from the Name drop-down
list.
4. Select an element in the Member Selection List that you want to
add to the alias, or select an element in the Alias Members list
that you want to remove.
5. Click Add Member to add the selected alias member, or click
Remove Member to remove the selected alias member.
The alias is modified in the Zone Admin buffer. At this point you
can either save your changes or save and enable your changes.
6. Click Zoning Actions> Save Config Only to save the
configuration changes.
Renaming zone aliases
Use the following procedure to change the name of a zone alias.
To rename a zone alias
1. Open the Zone Administration window as described on
page 163.
2. Click the Alias tab and select the alias you want to rename from
the Name drop-down list.
3. Click Rename.
The Rename an Alias dialog box appears.
4. Type a new alias name and click OK.
The alias is renamed in the Zone Admin buffer. At this point you
can either save your changes or save and enable your changes.
5. Click Zoning Actions> Save Config Only to save the
configuration changes.
Deleting zone aliases
You can remove a zone alias from the Zone Admin buffer. When a
zone alias is deleted, it is no longer a member of the zones of which it
was once a member.
Note: If you delete the only member zone alias, an error message is issued
when you attempt to save the configuration.
To delete a zone alias
1. Open the Zone Administration window as described on
page 163.
2. Click the Alias tab.
3. Select the alias you want to delete from the Name drop-down list.
4. Click Delete.
The Confirm Deleting Alias dialog box displays.
5. Click Yes.
Managing zone aliases 175
Administering Zoning
The selected alias is deleted from the Zone Admin buffer. At this
point you can either save your changes or save and enable your
changes.
6. Click Zoning Actions> Save Config Only to save the
configuration changes.
Creating and populating zones
Use the following procedure to create a zone.
To create a zone
1. Open the Zone Administration window as described on
page 163.
2. Select a format to display zoning members in the Member
Selection List as described in “Selecting a zoning views” on
page 171.
3. Click the Zone tab.
4. Click New Zone.
The Create New Zone dialog box displays.
5. On Create New Zone, enter a name for the new zone, and click
OK.
If you are creating an LSAN zone, the zone name must begin with
“LSAN_”.
The new zone appears in the Name drop-down list.
6. Expand the Member Selection List to view the nested elements.
The choices available in the list depend on the selection made in
the View menu.
7. Select an element in the Member Selection List that you want to
include in your zone. Note that LSAN zones should contain only
port WWN members.
The Add Member button becomes active.
Managing zones 177
Administering Zoning
8. Click Add Member to add the zone member.
The selected member is moved to the Zone Members window.
9. Optional: Repeat Step 7 and Step 8 to add more elements to your
zone.
10. Optional: Click Add Other to include a WWN or port that is not
currently a part of the fabric.
At this point you can either save your changes or save and enable
your changes.
11. Click Zoning Actions> Save Config Only to save the
configuration changes.
Adding and removing members of a zone
Use the following procedure to add or remove zone members.
To modify the members of a zone
1. Open the Zone Administration window as described on
page 163.
2. Click the Zone tab.
3. Select the zone you want to modify from the Name drop-down
list.
The zone members for the selected zone are listed in the Zone
Members list.
4. Highlight an element in the Member Selection List that you want
to include in your zone, or highlight an element in the Zone
Members list that you want to delete.
5. Click Add Member to add a zone member, or click Remove
Member to remove a zone member.
The zone is modified in the Zone Admin buffer. At this point you
can either save your changes or save and enable your changes.
6. Click Zoning Actions> Save Config Only to save the
configuration changes.
Renaming zones Use the following procedure to change the name of a zone.
To rename a zone
1. Open the Zone Administration window as described on
page 163.
2. Click the Zone tab.
3. Select the zone you want to rename from the Name drop-down
list.
4. Click Rename.
5. On Rename a Zone, type a new zone name and click OK.
The zone is renamed in the Zone Admin buffer. At this point you
can either save your changes or save and enable your changes.
6. Click Zoning Actions> Save Config Only to save the
configuration changes.
Copying zones Use the following procedure to copy a zone configuration.
To copy a zone
1. Open the Zone Administration window as described on
page 163.
2. Click the Zone tab.
3. Select the zone you want to delete from the Name drop-down list.
4. Click Copy.
5. On Copy an Existing Zone, enter a name for the copied zone.
6. Click OK.
The selected zone is copied from the Zone Admin buffer.
7. Click Zoning Actions> Save Config Only to save the
configuration changes.
Deleting zones Use the following procedure to delete a zone.
To delete a zone
1. Open the Zone Administration window as described on
page 163.
2. Click the Zone tab.
3. Select the zone you want to delete from the Name drop-down
menu and click Delete.
4. On the Confirmation dialog box, click Yes.
The selected zone is deleted from the Zone Admin buffer. At this
point you can either save your changes or save and enable your
changes.
5. Click Zoning Actions> Save Config Only to save the
configuration changes.