IBM DS6000 Series manual 135, User authorized to FlashCopy 25 TB of CKD data

CKD volumes will be FlashCopied, then you only need to purchase a license for 5 TB PTC and not the full 20 TB. The 5 TB of PTC would be set to CKD only.

Figure 8-4,shows an example of a FlashCopy feature code authorization. In this case, the user is authorized up to 25 TB of CKD data. The user cannot FlashCopy any FB data.

DS6000 with 45 TB disk capacity in total,

25 TB of CKD FlashCopy authorization with license scope of CKD,

45 TB of OEL Licensed function

User cannot FlashCopy any FB

20TB

FB

25TB CKD

	20 TB (FB) +
	25 TB (CKD) +
	--------
	45 TB total capacity
User authorize to	--------
FlashCopy
up to 25 TB

Figure 8-4 User authorized to FlashCopy 25 TB of CKD data

In Figure 8-5 on page 136, the user decides to change the license scope from CKD to ALL and FlashCopy the FB data as well. This increase of licensed scope from CKD to ALL is non-disruptive. Changing the license scope from FB to CKD or CKD to FB (lateral change) or reduction in license scope from ALL to FB or CKD will be disruptive and will require an IML. In this example, the user decides to FlashCopy 10 TB of FB and 12 TB of CKD data. The user has disk capacity of 20 TB of FB and 25 TB of CKD. In order to implement the changes, the user now has to purchase a Point-in-Time Copy function authorization of 45 TB. The user has to purchase authorization for the total FB and CKD capacity. In this case the total is the sum of 20 TB of FB and 25 TB of CKD, which equals 45 TB.

Chapter 8. Configuration planning 135