When should I use the .resetDRMVouchers() API?

Question

[ Background ]
DRMManager.resetDRMVouchers() (and the corresponding APIs on iOS and Android) will reset the DRM license store on the client device.  It does this by renaming the license store and notifying Adobe Access DRM to perform an individualization the next time protected content is played.  On the next playback of content, a new license store directory is created and all new licenses will go into that store.  The previous license store is never used again.
Sometimes, it is necessary to perform a .resetDRMVouchers() if the client device has reached a state where Adobe Access DRM can no longer function properly.  For instance, if the license store has become corrupt, the device can no longer access existing licenses or store new licenses - they are stuck unless they use annother Browser or App, which would use another license store.
[ How to properly call .resetDRMVouchers() ]
Below is an Actionscript code snippet.  The exact same workflow applies to iOS and Android:
import flash.net.drm.*;
private function onDRMErrorEvent(event:DRMErrorEvent) : void {
    if(event.errorID == 3322  || event.errorID == 3346){
        try {
            DRMManager.getDRMManager().resetDRMVouchers();
            // you may want to display 'please reload the page or restart the browser' message.
        catch(e:Error)
            // most likely in older version of flash player where resetDRMVouchers is not allowed.
[ Which error codes indicate the client is disabled and requires a DRM Reset? ]
The following error codes require a DRM Reset in order to recover a client that can no longer play Adobe Access DRM content:
DRM Error Event
Description
3322 - Device Binding Failed
The underlying hardware attributes of the device has changed so much (likely by a hardware upgrade) that Adobe Access does not recognize this machine to be the same machine it was before.  Adobe Access treats this as a "copy and paste" attack where one device copies licenses to a different device in an attempt to share their DRM'd content; playback is denied.
The device can recover by re-installing their previous hardware.  If that is not desired/possible, a DRM reset will re-initialize Adobe Access to set the current device attributes as the baseline.  However, doing this removes access to all previous licenses stored on disk.
3323 - Corrupt Global State Store
The license store has become corrupt and can no longer be accessed until a reset is performed.
3326 - Store Tampering Detected
The license store has been tampered, causing the signature check to fail.  The store can no longer be used and a reset must be performed to create a new store.
3346 - License Migration Failed
When upgrading to a newer version of Adobe Access or Flash Player, all previous licenses are migrated to the new license store.  If migration fails, the old  store is corrupt and must be reset so that the next individualization attempt will not attempt to migrate your previous license store.
[ How to manually perform a reset DRM ]
Please refer to this forum posting:  http://forums.adobe.com/message/3051713#3051713

Answer 1

Kanan, the difference you already know, blade .vs rack mount. There are some CPU differences, but not much. Both can be managed by UCSM in version 1.4.x
So it really is ones preference on what you are using it for and how scalable you want things to be for future expansion.
Blades: easy, as you can buy a chassis and have 2 blades in that one chassis and add blades as needed. If using boot from San, can get a server back up in minutes
Rack mount: can take rack space more quickly, takes time to duplicate in case of a failed server
Very small differences, but hope this helps to start the wheels turning.
Good Luck!
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