HP XP Array Manager Software - Manual (Page 7)

1 Overview of HP Database Validator
The HP Database Validator function of the XP24000 Disk Array and the XP24000 Disk Array is
designed for the Oracle database platform. Database Validator prevents data corruption between
the database and the storage system and protects existing Oracle data on the storage system.
Figure
1 shows a functional overview of Database Validator operations.
Figure 1 Database Validator Overview
The combination of networked storage and database management software has a risk of data
corruption while writing data onto storage. This data corruption rarely occurs. However, once corrupted
data is written into storage, it can be difficult and time-consuming to detect the underlying cause,
restore the system, and recover the database. Database Validator prevents corrupted data blocks
generated in the database-to-storage infrastructure from being written onto the disk storage. This helps
to prevent potentially disastrous corrupted data environments while at the same time minimizing risk
and potential costs in backup, restore, and recovery operations.
HP Database Validator performs the following functions:
• Prevents invalid Oracle data from being written to the storage systems: The data stored on a
storage system is transferred through many channels and may become invalid during the process.
Database Validator makes sure the Oracle data is valid before it is written onto disk. If the data
is invalid, Database Validator prevents the data from being written, thus, achieving high-reliability
of data in the storage system. Database Validator also saves time and costs required for recovery
when invalid data is written onto a volume.
• Protects existing Oracle data in the storage systems: Once Oracle data is stored on a volume,
Database Validator protects the existing data from being deleted or updated by mistake by
checking the data to be stored on that volume. For example, if another application attempts to
write data onto a volume containing Oracle data, the storage system rejects the write I/O and
return an error.
Unless otherwise specified, the term storage system in this guide refers to the following storage systems:
• HP StorageWorks XP24000 Disk Array
• HP StorageWorks XP20000 Disk Array
The GUI illustrations in this guide were created using a Windows computer with the Internet Explorer
browser. Actual windows may differ depending on the operating system and browser used. GUI
contents also vary with licensed program products, storage system models, and firmware versions.
XP24000/XP20000 Database Validator User's Guide 7