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Chapter 6 Settings Menu
> 6.3 Advanced Copy Settings
ETERNUS DX400/DX8000 series ETERNUSmgr User Guide Settings/Maintenance
475
Copyright 2010 FUJITSU LIMITED
P2X0-0760-02ENZ0
This section explains how to set the REC Buffers.
The following settings are available.
• Create/Change REC Buffer
• Delete REC Buffer
The procedures are explained in the following sections.
• Before adding REC Disk Buffers, create RAID Groups for REC Disk
Buffers using the [Create REC Disk Buffer] function.
• A REC Disk Buffer is used as a backup destination of a REC Buffer
(Send). Note that it is not used for a REC Buffer (Receive).
• Note the following conditions when assigning REC Disk Buffers to the
REC Buffer:
- A single REC Disk Buffer cannot be assigned to multiple REC
Buffers.
- One, two, or four (one or two for ETERNUS DX410) REC Disk
Buffers can be assigned to a single REC Buffer. When assigning
multiple REC Disk Buffers to a single REC Buffer, the number of
disks (4 or 8), disk type (FC or SSD), and encryption status (Yes or -)
must be matched.
• When assigning multiple REC Disk Buffers to a single REC Buffer, the
REC Disk Buffer capacity must be the same. If REC Disk Buffers of
different capacities are assigned to a single REC Buffer, the smallest
becomes the standard, and all other REC Disk Buffers are regarded as
having the same capacity as the smallest REC Disk Buffer. In this case,
the remaining REC Disk Buffer space will not be used.
• ETERNUS3000 does not support REC Asynchronous mode. When the
remote device is ETERNUS3000, the REC Buffer cannot be created.
• REC Asynchronous Consistency Mode between ETERNUS DX400/
DX8000 series and ETERNUS6000 is not supported. When the remote
device is ETERNUS6000, the REC Buffer cannot be created.
• In the following conditions, [Set REC Buffer] cannot be used:
- When no REC Buffer nor path is set (there is no remote device)
- When no REC Buffer is set and the memory capacity for assigning
the REC Buffer is insufficient
- When the memory capacity differs for each installed CM (CPU)
• When logged on using a Resource Domain Administrator account, the
[Set REC Buffer] menu is not displayed.
When deleting a REC Buffer where the REC Disk Buffers have already
been assigned, all the assigning information of the REC Buffer and REC
Disk Buffer is deleted, but the REC Disk Buffers remain. In this case, the
REC Disk Buffer is released from REC Buffers.