Cisco UCS Manager GUI Configuration Guide, 1.0(2)
Configuring Storage-Related Policies
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Configuring Storage-Related Policies

Configuring Storage-Related Policies

This chapter includes the following sections:

Configuring vHBA Templates

vHBA Template

This template is a policy that defines how a vHBA on a server connects to the SAN. It is also referred to as a vHBA SAN connectivity template.

You need to include this policy in a service profile for it to take effect.

Creating a vHBA Template

Before You Begin

This policy requires that one or more of the following resources already exist in the system:


  • Named VSAN

  • WWNN pool or WWPN pool

  • SAN pin group

  • Statistics threshold policy


Procedure
Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > Policies.
Step 3   Expand the node for the organization where you want to create the policy.

If the system does not include multi-tenancy, expand the root node.

Step 4   Right-click the vHBA Templates node and choose Create vHBA Template.
Step 5   In the Create vHBA Template dialog box, complete the following fields:
Name Description

Name field

The name of the virtual HBA template.

This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters, and you cannot change this name after the object has been saved.

Description field

A user-defined description of the template.

Fabric ID field

The name of the fabric interconnect that vHBAs created with this template are associated with.

Select VSAN drop-down list

The VSAN to associate with vHBAs created from this template.

Create VSAN link

Click this link if you want to create a VSAN.

Template Type field

This can be:


  • Initial Template—vHBAs created from this template are not updated if the template changes.

  • Updating Template—vHBAs created from this template are updated if the template changes.

WWN Pool drop-down list

The WWN pool that a vHBA created from this template uses to derive its WWN address.

Pin Group drop-down list

The LAN pin group that is associated with vHBAs created from this template.

Stats Threshold Policy drop-down list

The statistics collection policy that is associated with vHBAs created from this template.

Step 6   Click OK.

What to Do Next

Include the vHBA template in a service profile.

Deleting a vHBA Template

Procedure
Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > Policies > Organization_Name.
Step 3   Expand the vHBA Templates node.
Step 4   Right-click the vHBA template that you want to delete and choose Delete.
Step 5   If Cisco UCS Manager displays a confirmation dialog box, click Yes.

Binding a vHBA to a vHBA Template

You can bind a vHBA associated with a service profile to a vHBA template. When you bind the vHBA to a vHBA template, Cisco UCS Manager configures the vHBA with the values defined in the vHBA template. If the existing vHBA configuration does not match the vHBA template, Cisco UCS Manager reconfigures the vHBA. You can only change the configuration of a bound vHBA through the associated vHBA template. You cannot bind a vHBA to a vHBA template if the service profile that includes the vHBA is already bound to a service profile template.

Important:

If the vHBA is reconfigured when you bind it to a template, Cisco UCS Manager reboots the server associated with the service profile.

Procedure
Step 1   In the Navigation pane, click the Servers tab.
Step 2   On the Servers tab, expand Servers > Service Profiles.
Step 3   Expand the node for the organization that includes the service profile with the vHBA you want to bind.

If the system does not include multi-tenancy, expand the root node.

Step 4   Expand Service_Profile_Name > vHBAs.
Step 5   Click the vHBA you want to bind to a template.
Step 6   In the Work pane, click the General tab.
Step 7   In the Actions area, click Bind to a Template.
Step 8   In the Bind to a vHBA Template dialog box, do the following:
  1. From the vHBA Template drop-down list, choose the template to which you want to bind the vHBA.
  2. Click OK.
Step 9   In the warning dialog box, click Yes to acknowledge that Cisco UCS Manager may need to reboot the server if the binding causes the vHBA to be reconfigured.

Unbinding a vHBA from a vHBA Template

Procedure
Step 1   In the Navigation pane, click the Servers tab.
Step 2   On the Servers tab, expand Servers > Service Profiles.
Step 3   Expand the node for the organization that includes the service profile with the vHBA you want to unbind.

If the system does not include multi-tenancy, expand the root node.

Step 4   Expand Service_Profile_Name > vHBAs.
Step 5   Click the vHBA you want to unbind from a template.
Step 6   In the Work pane, click the General tab.
Step 7   In the Actions area, click Unbind from a Template.
Step 8   If Cisco UCS Manager displays a confirmation dialog box, click Yes.

Configuring Fibre Channel Adapter Policies

Ethernet and Fibre Channel Adapter Policies

These policies govern the host-side behavior of the adapter, including how the adapter handles traffic. For example, you can use these policies to change default settings for the following:


  • Queues

  • Interrupt handling

  • Performance enhancement

  • RSS hash

  • Failover in an cluster configuration with two fabric interconnects

By default, Cisco UCS provides a set of Ethernet adapter policies and Fibre Channel adapter policies. These policies include the recommended settings for each supported server operating system. Operating systems are sensitive to the settings in these policies. Storage vendors typically require non-default adapter settings. You can find the details of these required settings on the support list provided by those vendors.


Note


For Fibre Channel adapter policies, the values displayed by Cisco UCS Manager may not match those displayed by applications such as QLogic SANsurfer. For example, the following values may result in an apparent mismatch between SANsurfer and Cisco UCS Manager:


  • Max LUNs Per Target—SANsurfer has a maximum of 256 LUNs and does not display more than that number. Cisco UCS Manager supports a higher maximum number of LUNs.

  • Link Down Timeout—In SANsurfer, you configure the timeout threshold for link down in seconds. In Cisco UCS Manager, you configure this value in milliseconds. Therefore, a value of 5500 ms in Cisco UCS Manager displays as 5s in SANsurfer.

  • Max Data Field Size—SANsurfer has allowed values of 512, 1024, and 2048. Cisco UCS Manager allows you to set values of any size. Therefore, a value of 900 in Cisco UCS Manager displays as 512 in SANsurfer.


Creating a Fibre Channel Adapter Policy


Tip


If the fields in an area are not displayed, click the Expand icon to the right of the heading.


Procedure
Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > Policies.
Step 3   Expand the node for the organization where you want to create the policy.

If the system does not include multi-tenancy, expand the root node.

Step 4   Right-click Fibre Channel Policies and choose Create Fibre Channel Adapter Policy.
Step 5   Enter a name and description for the policy in the following fields:
Name Description

Name field

The name of the policy.

This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters, and you cannot change this name after the object has been saved.

Description field

A description of the policy. We recommend including information about where and when the policy should be used.

Step 6   (Optional) In the Queues area, adjust the following values for the transmit, receive, and SCSI IO queues:
Name Description

Count field

The number of SCSI IO queue resources the system should allocate.

Enter an integer between 1 and 8.

Note   

You can only have one transmit queue and one receive queue.

Ring size field

The number of descriptors in each queue.

For transmit and receive queues, enter an integer between 64 and 128. For completion queues, enter an integer between 64 and 512.

Step 7   (Optional) In the FLogi/PLogi area, adjust the following values:
Name Description

Flogi Area

Retries field

The number of times that the system tries to log in to the fabric after the first failure.

Enter an integer between 0 and 255. To specify that the system continue to try indefinitely, enter -1 in this field.

Timeout field

The number of milliseconds that the system waits before it tries to log in again.

Enter an integer between 1000 and 255000.

Plogi Area

Retries field

The number of times that the system tries to log into a port after the first failure.

Enter an integer between 0 and 255.

Timeout field

The number of milliseconds that the system waits before it tries to log in again.

Enter an integer between 1000 and 255000.

Step 8   (Optional) In the Error Handling area, adjust the following values:
Name Description

Error Detect Timeout field

The number of milliseconds to wait before the system assumes that there has been an error.

Enter an integer between 1,000 and 100,000. The default is 2,000.

Port Down Timeout field

The number of milliseconds a remote Fibre Channel port should be offline before informing the SCSI upper layer that the port is unavailable.

Enter an integer between 0 and 240,000. The default is 10,000.

Port Down IO Retry field

The number of times an IO request to a port is returned because the port is busy before the system decides the port is unavailable.

Enter an integer between 0 and 255. The default is 8.

Link Down Timeout field

The number of milliseconds the uplink port should be offline before it informs the system that the uplink port is down and fabric connectivity has been lost.

Enter an integer between 0 and 240,000. The default is 30,000.

Resource Allocation Timeout field

The number of milliseconds to wait before the system assumes that a resource cannot be properly allocated.

Enter an integer between 5,000 and 100,000. The default is 10,000.

FCP Error Recovery field

Whether the system uses FCP Sequence Level Error Recovery protocol (FC-TAPE). This can be:


  • disabled

  • enabled

Step 9   (Optional) In the FC Port Behavior area, adjust the following values:
Name Description

IO Throttle Count field

The number of IO operations that can be pending in the vHBA at one time.

Enter an integer between 256 and 4,096. The default is 512.

Max LUNs Per Target field

The maximum number of LUNs that the driver supports. This is usually an operating system platform limitation.

Enter an integer between 1 and 1,024. The default is 256.

Max Data Field Size field

The maximum size of the Fibre Channel frame payload bytes that the vHBA supports.

Enter an integer between 256 and 2,112. The default is 2,112.

Step 10   Click OK.

Deleting a Fibre Channel Adapter Policy

Procedure
Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > Policies > Organization_Name.
Step 3   Expand the Fibre Channel Policies node.
Step 4   Right-click the policy you want to delete and choose Delete.
Step 5   If Cisco UCS Manager displays a confirmation dialog box, click Yes.