Advanced functions for HDS USP and NSC

Some advanced functions of the HDS USP and NSC are not supported by the SAN Volume Controller.

Advanced system functions

The following advanced system functions for HDS USP and NSC are not supported for disks that are managed by the SAN Volume Controller:

TrueCopy
ShadowImage
Extended Copy Manager
Extended Remote Copy
NanoCopy
Data migration
RapidXchange
Multiplatform Backup Restore
Priority Access
HARBOR File-Level Backup/Restore
HARBOR File Transfer
FlashAccess

Advanced SAN Volume Controller functions

All advanced SAN Volume Controller functions are supported on logical unit (LU) that are exported by the HDS USP or NSC system.

LU Expansion

The HDS USP and NSC support Logical Unit Expansion (LUSE). LUSE is not a concurrent operation. LUSE allows you to create a single LU by concatenating logical devices (LDEVs). Before LUSE can be performed, the LDEVs must be unmounted from hosts and paths must be removed.

Attention:

LUSE destroys all data that exists on the LDEV.
Do not perform LUSE on any LDEV that is used to export an LU to a SAN Volume Controller.

If data exists on an LDEV and you want to use image mode migration to import the data to a SAN Volume Controller, do not perform LUSE on the disk before you import the data.

LUs that are created using LUSE can be exported to a SAN Volume Controller.

Virtual LVI/LUNs

The HDS USP and NSC support Virtual LVI/LUNs (VLL). VLL is not a concurrent operation. VLL allows you to create several LUs from a single LDEV. You can only create new LUs from free space on the LDEV.

Attention: Do not perform VLL on disks that are managed by the SAN Volume Controller.

LUs that are created using VLL can be exported to a SAN Volume Controller.