[Best Practices] Using Oracle Database 10g Automatic Storage Management with FUJITSU Storage
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2. Fujitsu’s ETERNUS Storage Systems
2-1. High Availability
Fujitsu ETERNUS storage system provides high availability that guarantees secure operation in mission critical
environments.
All major components are redundantly equipped. In the event of a component failure, ETERNUS automatically
reallocates the rest of active components for non-disruptive operation. Plus, all major components are
hot-swappable.
Disk drives are configured in RAID groups. In the event of a disk-drive failure, the data is quickly rebuilt in a
hot-spare disk to maintain the data redundancy. Plus, ETERNUS storage system constantly monitors each disk
drive for pre-failure detection. If one of the disk drives is likely to fail, ETERNUS proactively copies the data to
the hot-spare disk. This enables disk-drive exchange while maintaining the data redundancy.
The interfaces between servers and ETERNUS storage systems also deliver a high available mechanism. This
mechanism is provided by ETERNUS Multipath Driver or GR Multipath Driver that manages multiple Fibre
Channel paths. Even if one path fails, operations of a database and other applications can continue by
automatically rerouting data through the rest of active paths. Such a highly available mechanism guarantees
continuous operations even in the event of a server-side HBA failure or switch failure.
2-2. Performance Tuning
Fujitsu ETERNUS storage system provides features to exchange drives or to change RAID configurations
without disrupting accesses to the volumes. With these features, it is possible to optimize access performance
without stopping operations.
RAID Migration provides two features to reorganize disk drives. One is a feature to include the currently-used
RAID drives into the destination RAID group. This feature is useful when reconfiguring the same-specification
drives into a different RAID-level group. The other feature is useful when moving the data from the source
RAID drives to a different type of target RAID drives, for example, from a 10,000rpm-drive RAID group to
a15,000rpm-drive RAID group. Both features can be used without quitting accesses to the RAID group, and
the switching from the source to destination is automatically performed by ETERNUS.
2-3. Point-in-time copy feature
Fujitsu ETERNUS storage system provides a point-in-time copy feature that creates a copy of the source
volume data at a certain point in time within the storage system without stopping the operations of a database
or other applications.
System requirement for 24 x 365 continuous operation is growing. System administrators must make backups
without disrupting business operations, such as database operation, and without putting heavy loads on the
servers. ETERNUS provides two types of replication features: Equivalent Copy (EC) and One Point Copy
(OPC). With EC, the source and target volumes are previously synchronized and split when the replicated
volume is required. With OPC, a copy volume can be instantly created on demand. Both of these features can
be used according to business requirements.
3. Fujitsu Storage Management software
3-1. Fujitsu Storage Cruiser
Fujitsu Storage Cruiser offers the advanced storage resource management features based on the SAN
(Storage Area Network) management features. With versatile management features for configuration,
troubleshooting, performance and correlation, Fujitsu Storage Cruiser provides stable operation for any type of
storage system, including SAN, DAS (Direct Attached Storage) and NAS (Network Attached Storage).
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