Cisco Virtual Wide Area Application Services Configuration Guide (for WAAS 6.4.1x)

Upgrading vWAAS Memory and Disk with WAAS v5.4.1x through v6.1.1x

If you are running vWAAS with WAAS Version 6.1.1x, the Akamai disk is added by default; you do not need to use the following upgrade memory and disk procedure to use the Akamai Connect feature with vWAAS.

Upgrading vWAAS Memory and Disk with WAAS Version Earlier than v5.4.1

If you running vWAAS with a WAAS version earlier than Version 5.4.1, and are using an ESXi version lower than Version 5.0, and want to upgrade to WAAS v5.4.1, v5.5.1, or v6.1.1, use the following update memory and disk procedure to use the Akamai Connect feature with vWAAS.

Before using this procedure, note the upgrade paths for WAAS Version 6.2.3 shown in Table 9-5. For complete upgrade instructions, see the Release Note for Cisco Wide Area Application Services.

Table 9-5 Upgrade Paths for WAAS Version 6.2.3

Step 1 Power off the vWAAS.

Step 2 Right-click the vWAAS and choose Editing Settings....

Step 3 ChooseAdd....

Step 4 At the Add Hardware dialog box, choose Hard Disk. Click Next.

Step 5 At the Select a Disk dialog box, choose Create a new virtual disk. Click Next.

Step 6 At the Create a Disk dialog box:

• At the Capacity dropdown lists, enter the size of the new disk.
• At Disk Provisioning, choose Thick Provision Lazy Zeroed.
• At Location, choose Store with the virtual machine.
• Click Next.

Step 7 At the Advanced Options dialog box:

• At the Virtual Device Node dropdown list, choose SCSI (0:2).
• At Mode, choose Persistent.
• Click Next.

Step 8 At the Ready to Complete dialog box, confirm the following options:

• Hardware type
• Create disk
• Disk capacity
• Disk provisioning
• Datastore
• Virtual Device Node
• Disk mode

Step 9 Click Finish.

Step 10 The screen displays the status message New hard Disk (adding). Click OK.

Step 11 Wait until the Recent Tasks screen shows Reconfigure Virtual machine task as Completed. Power on.

Step 12 To verify the new disk, display the current hardware listing with Virtual Machine Properties > Hardware.

Upgrading vWAAS Memory and Disk for vWAAS-12000 with ESXi

Caution When the vWAAS-12000 model is deployed, the RAM size is 12 GB and the /local/local1 directory size is 15 GB. When you enable Akamai Connect for vWAAS, you need to increase the RAM to 18 GB. This procedure alters the calculation of the local1 directory size for the vWAAS-12000, because the expected size would be 27 GB. The mismatch between the existing size (15 GB) for the local1 directory and the expected size (27 GB) triggers an alarm.

The mismatch between RAM size and disk size can cause a serious problem during a kernel crash in the vWAAS-12000, because the vmcore file would then be larger than what could be stored in the local1 directory.

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To avoid the scenario described in the above Caution note, and to safely upgrade vWAAS memory and disk for Akamai Connect for the vWAAS-12000, follow these steps:

Step 1 Power off the vWAAS VM (Virtual Manager).

Step 2 Add an additional disk of the required size for your system.

Step 3 Increase the size of the RAM.

Note To run Akamai Connect on vWAAS-12000, you must increase the size of the RAM by at least
6 GB.

Step 4 Power on the vWAAS VM.

Step 5 Check the alarms.

The filesystem_size_mism alarm will be raised:

Step 6 Use the disk delete-data-partitions command.

Note The disk delete-data-partitions command deletes cache files, including DRE cache files.

Step 7 Reload.

Note You must reload the device after using the disk delete-data-partitions command. The reload process automatically re-creates data partitions, and initializes the caches. This process may take several minutes.

DRE optimization will not start until the DRE cache has finished initializing.

Upgrading vWAAS Memory and Disk for vWAAS-12000 with Hyper-V

Caution When the vWAAS-12000 model is deployed, the RAM size is 12 GB and the /local/local1 directory size is 15 GB. When you enable Akamai Connect for vWAAS, you need to increase the RAM to 18 GB. This procedure alters the calculation of the local1 directory size for the vWAAS-12000, because the expected size would be 27 GB. The mismatch between the existing size (15 GB) for the local1 directory and the expected size (27 GB) triggers an alarm.

The mismatch between RAM size and disk size can cause a serious problem during a kernel crash in the vWAAS-12000, because the vmcore file would then be larger than what could be stored in the local1 directory.

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To avoid the scenario described in the above Caution note, and to safely upgrade vWAAS memory and disk for Akamai Connect for the vWAAS-12000, follow these steps:

Step 1 Power off the vWAAS VM (Virtual Manager).

Step 2 Add an additional disk of the required size for your system.

Step 3 Increase the size of the RAM.

Note To run Akamai Connect on vWAAS-12000, you must increase the size of the RAM by at least
6 GB.

Step 4 Increase the size of the kdump file from 12.2 GB to 19 GB.

To enable the kernel crash dump mechanism, use the kernel kdump enable global configuration command. To display kernel crash dump information for the device, use the show kdump EXEC command.

Step 5 Power on the vWAAS VM.

Step 6 Check the alarms.

The filesystem_size_mism alarm will be raised:

Step 7 Use the disk delete-data-partitions command.

Note The disk delete-data-partitions command deletes cache files, including DRE cache files.

Step 8 Reload.

Note You must reload the device after using the disk delete-data-partitions command. The reload process automatically re-creates data partitions, and initializes the caches. This process may take several minutes.

DRE optimization will not start until the DRE cache has finished initializing.

WAAS Central Manager and Cisco vWAAS-150

For the Cisco vWAAS-150 model, the WAAS Central Manager (CM) must be WAAS Version 6.2.1 or later, but supports mixed versions of device models (Version 6.2.1 and earlier). The WAAS CM must be a higher or equal version than associated devices.

Note The vWAAS-150 model is deployed for WAAS Version 6.1.1 only, so you cannot upgrade or downgrade the vWAAS-150 from Version 6.1.1.