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D4 SAN Storage Array
The NEC D4 modular storage array offers both Fibre Channel and iSCSI connectivity in the same array. Offering many built-in features, as well as, support for NEC’s enterprise-class storage software. The D4 array is scalable from just 300 GB to 288 TB capacity via up to eleven 2U 12-drive expansion enclosures.
Aggregate throughput of over 1,200 MB/s to hosts is provided via up to eight 8 Gbps Fibre Channel ports, or up to four 10 Gbps iSCSI ports. The ports can be connected into a SAN, or direct-connected as a simple and low-cost DAS solution. The disk enclosures are connected to the controller through a SAS wide-link connection for a full 48 Gbps bandwidth to each disk enclosure.
A fully redundant system protects against any single-point-of-failure, with a BBU (battery backup unit) protecting the cache. Failed componentry is reported via alerts through either email or SNMP traps, as well as in the management software.
Download D4 SAN Storage Array product brochure for detailed specifications
Download D-Series Software product brochure for detailed specifications
| Feature | D4 |
| Controllers | 2 active-active |
| Host Interface | 8 Gbps Fibre Channel 10 Gbps iSCSI* |
| Host Ports | Fibre Channel: 4 or 8 iSCSI: 0 or 4 |
| Capacity (max) | 288 TB |
| Modules | 1 to 12 |
| Capacity per module | 12 HDDs |
| HDD support | SAS, SATA, and SAS + SATA intermix |
| Cache | 4 GB (2 GB per controller) |
| Cache Battery | 7 hours standard; 72 hours with optional 1U battery backup unit |
| Supported OS |
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The software-driven capabilities below are available on the D4:
| Software Objective | Software Function | NEC Storage Software |
| Simple Operation | Storage & access control | Storage Manager |
| Over-provisioning of capacity | Thin Provisioning | |
| Data Protection | Replication within same array | Dynamic DataReplication |
| Replication between arrays | Remote DataReplication | |
| On-demand snapshots | Dynamic SnapVolume | |
| Transaction-consistent protection for MS SQL Server | Replication Control SQL Option | |
| Performance Management | Performance monitoring & alerts | Performance Monitor |
| Analysis and trending of performance data over time | Performance Navigator | |
| Automates performance tuning | Performance Optimizer | |
| Energy Conservation | Turn off HDDs when not needed (more than MAID) | Power Conserver |
| Compliance | Prevent unauthorized modification of data (more than WORM) | Volume Protector |
| High Availability | Multi-pathing for failover and load balancing | Path Manager |