Fujitsu ETERNUS AF250 S2 Configuration Manual page 6

FUJITSU Storage ETERNUS AF series and ETERNUS DX S4/S3 series
1.4.2. Storage Cluster
*4
Storage Cluster is an optional transparent failover feature of ETERNUS SF Storage Cruiser, which enables a non-stop storage infrastructure in
the event of a single point of failure (SPOF) in a storage system.
To improve system availability, it automatically detects when the storage system recovers so as to restore redundancy as soon as possible.
The main functions are as follows.
- Data mirroring provided by storage functions
The synchronous Advanced Copy function of the ETERNUS AF/DX maintains data consistency across different storage systems.
Copying does not use server resources, thereby keeping any load on the operation to a minimum.
- Automated monitoring, switchover, and post-recovery switch-back
When a failure is detected in the ETERNUS AF/DX, Storage Cluster switches the access destination automatically without operator
intervention.
Even when AST is running, data allocation is still optimized on the Secondary storage based on the access information on the Primary
storage. This means that the same I/O performance is maintained after a switchover occurs and the operation can continue to function
reliably.
Post-recovery procedures are simplified by automatically detecting a data consistency restoration after the storage system recovers and
the access destination switches back.
- Continuity of replication
When replication is used on the Primary storage, the same copying is also performed on the Secondary storage at the same time.
Because copying continues to function after switchover, replication continues and its high reliability is maintained.
Using Storage Cluster provides a system without business downtime.
Because automatic switchover does not require any operation, it helps minimize the operating costs of the customer's system.
1.4.3. ETERNUS SF MA
ETERNUS SF MA collects and archives performance data, and can output information such as automatic diagnosis results or long-term
performance, not only on screen but also in the form of customizable reports.
The main functions are as follows.
- Automatic diagnosis
Problems with performance can be pre-empted through automatic diagnosis performed using indicators determined based on expert
know-how and (customizable) threshold values.
Diagnosis results can be scheduled for automatic output in regular reports.
Diagnosis results can also be presented as Baseline reports output in Excel format.
- Extensive performance data display and Navigation pane
The relationship between the resources can be analyzed from the server side or the storage system side by tracking the resources in a tree
structure.
This provides intuitive operation of display and performance analysis, enabling bottlenecks or the scope of problems to be identified
quickly.
For example, ETERNUS SF MA interoperates with Microsoft Windows Server, VMware vCenter Server, and Hyper-V to undertake
investigations that link the storage system and the IP network switches on the paths with performance problems for business servers by
displaying the storage access performance from the physical servers and the virtual machines.
- Storage cost reduction by using compression and high-speed queries
ETERNUS SF MA uses Fujitsu's highly efficient data compression for long-term storage of performance and event information.
Performance analyses covering long periods of time can be performed quickly using in-memory processing.
The solution provides a storage system that can operate non-stop, 24 hours a day, 365 days a year.
The performance data display and automatic diagnosis functions of ETERNUS SF MA are useful to identify long-term performance trends and
prevent performance problems arising due to business growth.
Use of the Navigation pane and reports of ETERNUS SF MA also reduces administrator workloads.
*1: Requires the ETERNUS SF Storage Cruiser license for each ETERNUS AF/DX.
*2: Requires the ETERNUS SF Storage Cruiser Optimization option for each ETERNUS AF/DX.
*3: Requires the ETERNUS SF Storage Cruiser QoS Management option for each ETERNUS AF/DX.
*4: Requires the ETERNUS SF Storage Cruiser Storage Cluster option and the ETERNUS SF AdvancedCopy Manager license for each ETERNUS AF/DX.
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