Datasheet

Chapter 3 Setup

3.3 Data Management

ETERNUS DX60 S2 Disk storage system User’s Guide -Operation-

• After concatenation, any number of formatting processes can be started at once.

• Because the server-side LUNs are not changed by volume concatenation, an OS reboot is

not required. However, this function only expands the volumes in the ETERNUS DX Disk

storage system. Server-side recognition and volume expansion is OS dependent.

• The logical unit number of each concatenated volume does not change and remains

accessible from the server before, during, and after the concatenation.

• If the power is turned off or an electrical power outage occurs during LUN Concatenation, the

concatenation will simply continue the next time the power is turned on.

• It is recommended that the data on the volumes that are to be concatenated be backed up

first.

• When LUN Concatenation is used to increase the volume (LUN) capacities, note that the

increased size of the expanded volumes may not always be dynamically re-recognized by the

server, depending on the server-side OS (type and version) being used. Refer to the

applicable OS and file system documentation before dynamically expanding the volume

capacity.

This is not necessary when building a new system after the volume capacity has been

expanded.

• A concatenated volume can be used as an OPC, EC, or QuickOPC copy source or copy

destination. It can also be used as a SnapOPC+ copy source.

• When a volume that is using ETERNUS SF AdvancedCopy Manager to run backups is

expanded via LUN Concatenation, the volume will need to be registered with ETERNUS SF

AdvancedCopy Manager again.