High availability, high reliability > RAID-TM (Triple Mirror) with more advanced high availability

RAID-Triple Mirror by high-speed RAID engine is adopted. This technology has high speed of RAID-1 and high reliability of RAID-6 at the same time. The business can continue even when double failure occurs to the HDDs of the same RAID. This technology is useful especially for Database and OLTP which require high performance and availability.

Saving energy > MAID Technology to reduce the power consumption of disk drives

The D Series incorporates MAID technology. This technology allows customers to save power by allowing disks to be powered off.

Up to twelve FC Host Ports, Four Gbps Each

Up to six servers with dual paths can be connected without an FC switch, enabling a simple and low-cost configuration.

Component Redundancy

Redundancy with field-replaceable, hot-swapping is provided for all major components such as controllers, cache memory, power supplies, battery backup units, and fans - insuring business up-time even in the rare event of a component failure.

RAID-6 Technology

RRAID-6 technology ensures continued operation even if errors occur in two hard drives at the same time. RAID-6 greatly enhances the availability of the disk array, and can be used together with RAID-1 and RAID-5 storage pools. RAID-6 records two parity values, P and Q, which are generated by two independent equations made from the data. NEC's D1-10 Storage Array contains a ASIC LSI RAID processor, which carries out the complex RAID operations. RAID-6 provides high performance and keeps the device highly reliable.

DynamicPool

Traditionally, logical disks could only be managed in units of the physical sets of disks that made up the RAID, users had to install a fixed number of disks even if they were not necessary. The new dynamic pool function permits logical disk capacities to be changed dynamically. Physical disks can be added one at a time. The logical disks required can be managed efficiently, and the system is free from physical restrictions.

 

Phoenix Technology for Advanced Preventative Maintenance

Using Phoenix Technology, a disk drive causing a delay in response can be separated from the RAID pool, and a background diagnosis automatically performed. If no defects are found, the drive can be returned to the original RAID configuration without the need for switching to a hot spare disk. Phoenix technology can reduce the need to do rebuilds by up to 50%.

 

Flexible Equipment Configuration and High Scalability
Flexible hard disk drive options are offered to meet a wide variety of needs:

• 73 GB SAS(15,000 rpm)
• 147 GB SAS (15,000 rpm)
• 300 GB SAS (15,000 rpm)
• 500 GB SATA (7,200 rpm)
• 750 GB SATA (7,200 rpm)

In addition, the D3-10 Storage Array has dual controllers, supports SATA 750GB drives and can be intermixed with high performance SAS drives within the same array or device enclosure. RAID-1, RAID-5, RAID-10, RAID-50, and RAID-6 can be installed in mixed configurations. Four host FC ports are built-in as a standard. A maximum of 11 additional disk enclosures, each capable of mounting 12 disk drives can be connected to equate to 144 HDDs. The D3-10 Storage Array can support 2 GB of cache per controller.

StorageManager

StorageManager is the integrated storage software package that provides basic control to NEC's D3-10 Storage Array. This software features GUI display for the configuration, monitoring, error reporting, and performance information on logical disks and controllers.

AccessControl (optional)

Access to the logical disks can be set for individual ports or hosts (LUN masking).

PerformanceMonitor (optional)

Includes real-time status of information on the array's performance, load monitoring, and statistical analysis.

ReplicationSuite (DDR+DSV) (optional)

DDR or Dynamic Data Replication provides for full copies of LUNs. Generally these copies are fractured and re-assigned to other connected hosts for such needs as batch processing, testing with production data, or even parallel backup. DSV or Dynamic Snap Volume provides for a copy of the changed data between two points in time (PIT). This technology facilitates advanced recovery of data from up to 16 earlier states without the need to locate and search through traditional tape medium. Since only the changed data is written, cost savings is realized over the full copy methodology.

RemoteReplication Software (RDR) (optional)

NEC Storage RemoteDataReplication replicates business volumes defined per logical disk between NEC Storage disk array systems, enabling use of replicated data at a remote site.

Replicating data from one Storage system to another
- Volumes can be replicated between disk array systems.
Replication of any volume at any time
- A replicated volume can be separated at any time to be used for a different purpose.
- For reconnection, the update differential management function enables quick resynchronization.