Huawei OceanStor 2600 V3 Product Description page 12

OceanStor 2600 V3
Product Description
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The OceanStor 2600 V3 storage system also supports Scale-out expansion of clustered nodes
for system performance improvement.
Proven Reliability
The OceanStor 2600 V3 storage system uses advanced technologies to offer protection
measures, minimizing risks of failures and data loss.
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Issue 09 (2019-05-15)
Disks:
SAS disks, NL-SAS disks, and SSDs.
Host interface modules:
8 Gbit/s Fibre Channel, GE, 10GE, and SmartIO.
NOTE
SmartIO interface modules support various port types including 8 Gbit/s Fibre Channel, 16 Gbit/s Fibre
Channel, 10 Gbit/s FCoE (VN2VF), 10 Gbit/s Ethernet, and iWARP (interconnection between Scale-out
nodes).
Protection against component failures
The storage system components are in 1+1 redundancy and work in active-active mode.
Normally, every two components work simultaneously and share loads. If one
component fails or goes offline, the other one takes over all loads and speeds up to
compensate. The whole process is transparent to applications.
RAID 2.0+ underlying virtualization
The storage system employs innovative RAID 2.0+ underlying virtualization technology
for automatic load balancing. If a disk encounters a fault, all the other disks in the same
disk domain help construct the faulty disk's service data, achieving a 20-fold faster
reconstruction speed than traditional RAID technology. In addition, RAID 2.0+
significantly reduces the possibility of multi-disk failure.
Data protection in the event of a controller failure
– Built-in backup power modules supply power to controller enclosures in the event
of unexpected power failures. They enable cache data to be written to built-in disks
of controllers to avoid data loss.
– When a piece of software is faulty, the storage system will attempt to reboot.
During the reboot, data is stored in the cache. If the reboot fails, data in the cache
will be written into the built-in disks of controllers to avoid data loss.
– If hardware of a controller is faulty, the storage system will use the memory
mirroring technology to enable the other normal controller to take over the services
to ensure data consistency.
Bad sector repair
In a storage system, the frequently occurred fault is bad sectors of disks. The OceanStor
2600 V3 storage system adopts the bad sector repair technology to proactively detect and
repair bad sectors, reduce the disk failure rate by 50%, and prolong the service life of
disks.
Disk pre-copy
The disk pre-copy technology enables the storage system to routinely check the hardware
status. Once it detects that a disk has fault risks, it will enable data migration from the
disk to another normal disk to prevent data loss.
IP failover
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