Restrictions on Data Retention Utility volumes
•
File systems using Data Retention Utility
¢
When setting DRU to the UNIX file system volumes, the volumes must
be mounted with the Read Only option after the volumes are
unmounted. If DRU is set to the volumes as they are in the mounted
status, unexpected behavior or errors might occur in the system.
¢
When using a file system for Write Protect Mode set disk on Windows
Server 2003/Windows Server 2008/Windows Server 2012, use the "-x
mount" and "-x umount" CCI command options with the above
mentioned procedures.
¢
Data Retention Utility volumes set to Write Protect Mode (Read ONLY)
cannot be used for the Windows NT/Windows 2000 file system (NTFS,
FAT).
¢
In a configuration with NAS modules installed, do not set Data
Retention Utility in a file system volume used by a NAS module. If you
do, unexpected behavior or errors might occur in the system.
•
LVM(VxVM) on Data Retention Utility
¢
If changing LVM configuration including Data Retention Utility, use the
raidvchset -vg command for setting the status of the target volume
checking prohibited temporarily. Also, after the completion of LVM
configuration change, set again the status as checking.
•
Data Retention Utility in HA Cluster Server
¢
If HA Cluster software writes to the metadata at regular intervals to
confirm whether its disks are available or not, then Data Retention
Utility should not be used in HA environments.
•
Dynamic disk on Windows systems
¢
Data Retention Utility volumes cannot be used for the dynamic disk,
because the dynamic disk does not handle the volumes set to Write
Protect Mode (Read ONLY). Data Retention Utility volumes must be
used for basic disks only.
•
LUN#0
¢
Some operating systems cannot recognize LUNs over LUN#1 if LUN#0
has the Data Retention Utility "inv" attribute set. This is because some
HBA drivers do not scan all LUNs on a port if LUN#0 is invisible.
Database Validator
Database Validator prevents data corruption in an Oracle database by
checking Oracle data validation before an Oracle data block is written on a
disk.
•
Data Block corruption: This occurs when Oracle data is corrupted by some
intervening software layer and/or hardware components. The RAID
storage system can check the validity of the data block before the Oracle
data block is written to disk.
Data protection operations with CCI
7-3
Command Control Interface User and Reference Guide
Summary of Contents for HUS VM
Page 10: ...x Command Control Interface User and Reference Guide ...
Page 18: ...xviii Preface Command Control Interface User and Reference Guide ...
Page 78: ...2 50 CCI software environment Command Control Interface User and Reference Guide ...
Page 154: ...4 8 Starting up CCI Command Control Interface User and Reference Guide ...
Page 191: ...Provisioning operations with CCI 5 37 Command Control Interface User and Reference Guide ...
Page 280: ...6 56 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Page 286: ...6 62 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Page 302: ...7 16 Data protection operations with CCI Command Control Interface User and Reference Guide ...
Page 324: ...8 22 Examples of using CCI commands Command Control Interface User and Reference Guide ...
Page 524: ...9 200 Troubleshooting Command Control Interface User and Reference Guide ...
Page 529: ...Command Control Interface User and Reference Guide ...