D4 Datasheet, PDF (1/2 Pages) NEC – SAN STORAGE

D4
SAN STORAGE
NEC D4 Storage
The D4 SAN storage array delivers both high performance 8 Gbps
Fibre Channel ports and cost-effective 10 Gbps iSCSI connectivity
in the same system for use with VMware^®, databases, and other
block-storage applications. It uses SAS and SATA drives in the
same enclosures to create a tiered storage architecture.
D4 at a Glance
Base Unit/Disk Enclosure (front)
Modular design — each module holds 12 HDDs
• Dual-ported drives • SAS - SATA HDD intermix • Hot spare/swap HDDs
Base Unit with Extended FC Option (rear)
Dual power suppliess
A
A
A
2U
BC
D
E
BC
Dual disk adapter modules
A
D
E
Base Unit with FC + iSCSI Option (rear)
Dual power supplies
A
A
A
2U
B
F
D
E
B
F
C
C
Dual disk adapter modules
A
D
E
Disk Enclosure (rear)
Dual power supplies
A
A
2U
B
A
A
B
Dual disk adapter modules
A Dual fans per power supply B Dual SAS back-end ports (48 Gbps wide-link)
C Fibre Channel front-end connectivity D Redundant management ports
E ECC cache memory (mirrored, battery-backed) F iSCSI front-end connectivity
Superior Dependability
• Fully redundant system architecture delivers 99.999% availability
• Active-active controllers provide highest performance and
dependability in a multipathing environment
• Snapshots and replication enable data protection
• Self-healing, patented Phoenix technology decreases the number
of RAID rebuilds by 30%-50% and reduces HDD failures by fixing
hard drives before they fail
• Catches silent data corruption of both SAS and SATA drives that
is not detected by other systems
• RAID groups span enclosures for maximum reliability
• Global hot spares and hot swappable hard drives
• Mirrored ECC cache is also battery-backed
• Background disk & cache scrubbing prevents applications from
receiving corrupt data
High Efficiency
• Thin Provisioning enables smart capacity over-provisioning,
keeping drive costs to a minimum
• Both FC and iSCSI connectivity is ideal for making the transition
to an IP-based storage infrastructure
• SAS and SATA intermix in the same enclosure can economically
store both primary and secondary data
• Power off RAID groups when not in use to save energy
Wide Scalability
• Expand RAID groups dynamically by adding HDDs one-by-one or
many at a time while data is still being accessed
• Up to 144 HDDs in a single RAID group
• Grow LUNs online without reconfiguring RAID groups
• Use 8 front-end ports to attach more servers without a switch
• Up to 8 GB cache provides top performance for multiple hosts
• Command Line Interface (CLI) allows automated control
• Email notification and SNMP traps proactively alert you
• Browser-based GUI allows remote management of up to 32
arrays in a ‘single pane of glass’