Cisco Cisco MGX-FRSM-HS2 B Serial Frame Service Module Guia Da Instalação
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Cisco Prime Network Analysis Module Catalyst 6500 Series Switch Installation and Configuration Guide
OL-24434-02
Installing and Configuring External Storage
Some arrays come with multiple storage controller modules, and the module ownership must often be
mapped to each LUN. This is a common security feature.
mapped to each LUN. This is a common security feature.
To see if the NAM can access the storage array LUNs, use the CLI command
remote-storage
update-inventory
. The NAM will scan for added and removed external storage, which may take a
couple of minutes. Then use the CLI command
remote-storage sas list
to view the detected external
SAS storage.
root@nam.localdomain# remote-storage update-inventory
Scanning, this may take a few minutes...
Remote storage information updated.
root@nam.localdomain# remote-storage sas list
Storage ID: 3
Label:
Status: Unformatted
Transport: SAS
Type: LUN
Model: DotHill DH3000
LUN: 0
Capacity: 3.2TB
Available: 3.2TB
The LUN number can help you identify one LUN from others of the same external storage array. This
number is unique to each particular array, meaning two LUNs from different arrays can have the same
number. If the new LUNs do not show up in the list, then the NAM cannot access them. This is likely
due to a configuration error on the array.
number is unique to each particular array, meaning two LUNs from different arrays can have the same
number. If the new LUNs do not show up in the list, then the NAM cannot access them. This is likely
due to a configuration error on the array.
You will now be able to use the SAS external storage from within the NAM. See the Cisco Prime
Network Analysis Module (NAM-3) User Guide for more information.
Network Analysis Module (NAM-3) User Guide for more information.
Preparing External FCoE/FC Storage
Configure The Storage Array
Reference the vendor’s user guide for proper configuration of the array. The NAM-3 is independent of
most array settings, but some are important for accessibility and performance.
most array settings, but some are important for accessibility and performance.
When configuring the Logical Unit Numbers (LUNs) on the array, there is often a “Segment Size”
setting. Larger segment sizes can improve write speeds. Cisco recommends that you use a segment size
as large as possible, up to 512KB. Multiple LUNs can be configured on a single array. The NAM-3
supports up to 24 LUNs between the SAS and FCoE ports combined.
setting. Larger segment sizes can improve write speeds. Cisco recommends that you use a segment size
as large as possible, up to 512KB. Multiple LUNs can be configured on a single array. The NAM-3
supports up to 24 LUNs between the SAS and FCoE ports combined.
It is very important that you map the NAM FCoE Port World Wide Identifier (PWWN). Most storage
arrays require this for security reasons, ensuring that only certain hosts (for example, a NAM) can access
the LUNs. Each NAM has a unique PWWN, so this step must be performed for each NAM which
requires access and for each LUN that is to be accessed.
arrays require this for security reasons, ensuring that only certain hosts (for example, a NAM) can access
the LUNs. Each NAM has a unique PWWN, so this step must be performed for each NAM which
requires access and for each LUN that is to be accessed.
The NAM PWWN can be found using the CLI command
remote-storage fcoe local-pwwn
. The
PWWN is based off of the SFP+ port MAC address. Two bytes are appended to the front, and may be
changed by the Nexus switch when the PWWN is presented to the storage array. Many storage arrays
will automatically detect the PWWN after being connected to the NAM, so look for the MAC address in
the PWWN.
changed by the Nexus switch when the PWWN is presented to the storage array. Many storage arrays
will automatically detect the PWWN after being connected to the NAM, so look for the MAC address in
the PWWN.
root@mynam.mydomain# remote-storage fcoe local-pwwn
Local FCoE MAC : 00:22:BD:CF:3E:4E
Local FCoE PWWN: 23:e8:00:22:BD:CF:3E:4E