be implemented as nearline storage or as a supplement to your primary backup and recovery device. This evolutionary advancement in performance is a testament to the tightly integrated xStack Storage architecture and is a sharp contrast to the discrete implementation of competing products.


iSCSI for IP Networks
SAN has been traditionally reserved for Fibre Channel networks until the recent introduction of iSCSI extended this powerful yet simple centralized backend storage system to IP networks. By utilizing existing Ethernet technology, the cost associated with separate host bus adapters and the per-Gigabyte cost for storage is significantly reduced. iSCSI SANs can leverage the Ethernet infrastructure and standards that are already familiar to your IT staff.

Four 1GbE Interfaces
The DSN-1100-10 implements four 1GbE ports that support IEEE 802.3ad Link Aggregation Groups (LAG) for full offload capability. This allows all four ports to be grouped together for up to 425MB/s bandwidth, increasing throughput and redundancy.

System-on-a-Chip (SoC) Implementation
By utilizing a SoC design, the DSN-1100-10 combines both networking and storage functions into a single specialized Application Specific Integrated Circuit (ASIC). The SoC solution combines 10Gbps iSCSI, TCP & IP offload, embedded processors, and storage virtualization firmware onto a single chip. The tight integration of these functions eliminates interoperability, timing, and support issues found in competitive products that offer “discrete implementation” wherein all the various components are chosen separately and then assembled. The DSN-1100-10 outperforms these discrete implementations and does so at a lower price point, while delivering mission-critical data quickly with state-of-the-art reliability.

RAID for Efficiency
The DSN-1100-10 features five hot swappable Serial ATA (SATA) disk drive bays supporting 5TB raw capacity using 1TB hard drives (and even higher capacity hard drives as they are introduced) in RAID level 0, 1, 1+0 and 5 configurations. You can quickly deploy a SAN using inexpensive SATA disk drives and, depending on your growing storage needs, you can simply add more drives as you go.

Embedded Centralized Storage Management
The embedded, user-friendly IP-SAN Device Manager (IDM) provides comprehensive network storage management. Boasting a rich set of management features, this suite of utilities allows monitoring and control of your SAN via the Storage Management Initiative-Specification (SMI-S) command set. Combined with an embedded secure server, users will be able to remotely configure and monitor their SAN storage subsystems.

Advanced Management Features
The DSN-1100-10 provides additional advanced features for efficient management of network storage and optimal performance.

For the fastest RAID performance offered in the industry, the D-Link adaptive cache management provides write coalescing and multi-stream read-ahead on a volume basis, optimizing cache utilization and performance in an application-dependent manner. Volatile cache data protection is afforded via an on-board battery that is designed to back up to 1GB of cached memory for at least 72 hours. A write-back or write-through cache memory policy can be selected manually or automatically, depending on the battery’s charge.

VLAN Zoning supports IEEE 802.1q VLAN tagging to segregate traffic into isolated zones for secure access and jumbo frames, improving network throughput and reducing CPU overhead.

Volume Virtualization utilizes the concept of storage Extents. Extents are the fundamental building blocks used to enable features such as RAID, online capacity expansion and volume migration. Drives of dissimilar size can be used to create volumes. Growth can occur without volume migration or reconstruction. Single drives can contain multiple and divergent RAID technologies. Volume structure can also provide infrastructure for Snapshot copies.

RAID Support for RAID Levels 0, 1, 1+0 and 5 (striped sets, mirrored sets, striped mirrored sets, and parity sets) allows for different storage options.

Online Capacity Expansion and RAID Level Migration are performed online with minimal impact on users. For example, a mirror volume of two drives can easily be converted to a parity volume of three or more drives while users continue to access this storage.

Micro Rebuilds provide protection against unresponsive SATA commands by forcing a response within a preset time limit.

An iSCSI array can prove to be a valuable tool to supplement your network storage foundation. Whether providing a low-cost block-based solution for data backup and recovery, replacement of Direct-Attached Storage (DAS) drives, or providing a cost-effective entry-level nearline storage solution, the DSN-1100-10 can meet all of your immediate needs.


Technical Specifications

Drive Bays:		• 5
Drive Interface Support:		• SATA-II support
System Memory:		• 256MB to 512MB (256MB standard)
Cache Memory:		• 256MB to 1GB (256MB standard)
Battery Backup for Cache:		• Standard   (approximately 72 hours on full charge)
Bandwidth:		• Up to 425MB/s
Storage Capacity:		• 5TB capacity with 1TB hard drives   (supports for higher capacity drives as they are introduced)
Supported NICs, iSCSI Accelerators and iSCSI HBAs:		• Intel® Pro 1000MT & XT [1GbE] • Intel Pro 10000 CX4 [10GbE] • Myricom 10G-PCIE-8A-C+E [10GbE] • Chelsio® S310X-SR-XFP [10GbE] • Neterion® Xframe® II & Xframe E [10GbE] • Alacritech® SES2104ET (drivers: SNP 9.1.0.1092 & 7.3.1.0) • Alacritech SES2102ET (drivers: SNP 9.1.0.1092 & 7.3.1.0) • QLogic® 4010C, 4052C, & 4062C
Operating Systems Supported:		• Windows® Vista® 32-bit & x64   (Ultimate & Enterprise) with Built-in iSCSI initiator • Windows Server 2003® 32-bit & x64 SP1 (Standard & Enterprise)   with v2.07 iSCSI initiator • Windows Server 2003 R2 32-bit & x64 (Standard & Enterprise)   with v2.07 iSCSI initiator • Windows XP Pro 32-bit & x64 with v2.07 iSCSI initiator • Windows 2000 Advanced Server with v1.6 & v2.01   iSCSI initiator • Red Hat® 7.3 • Red Hat Enterprise AS update 5 • SuSE® Enterprise Server 10.2 32-bit (x86) • SuSE Professional 9.3 32-bit & x64 • Mac OS® X (10.4 & 10.5)

iSCSI Network Interface

iSCSI Network Interface:		• Four 1GbE Copper Ports
Host Interface:		• iSCSI Draft 20 compliant initiator
Connections:		• 1,024 hosts
CHAP Authentication:		• Yes
Access Control of Management:		• Yes
iSCSI/TCP/IP Full HW Offload:		• Yes
Jumbo Frames Support:		• Yes
Link Aggregation Group Support:		• Yes – Up to four LAGs   (IEEE802.3ad Link Aggregation Group)
VLAN Support:		• Up to four 1-to-1 mapping between IP subnet and VLAN.   Multiple VLANs per physical port with VLAN tag. All physical   ports in LAG belong to same VLAN (IEEE802.1Q Tag)

Volume & RAID Support

RAID Controller:		• Single- Integrated in ASIC
RAID Support:		• RAID Levels 0, 1, 1+0 and 5
Volumes:		• 1,024 Virtual Volumes (256 accessible per initiator)
Target Nodes:		• 1,024
Online Capacity Expansio:		• Yes
Hot Swappable Drives:		• Yes
Instant Volume Access:		• Yes
Free Space Defragmentation:		• Yes
Auto-Detection Failed Drive:		• Yes
Auto-Rebuild Spare Drive:		• Yes
RAID Level Migration:		• Yes
Drive Roaming in Power Off (configured drives are not bay-specific):		• Yes
Micro Rebuilds:		• Yes

Storage Management

Embedded IP-Based Management GUI:		• Create, manage, expand and monitor storage pool,   volumes and RAID • Event manager to view and persist events
Firmware Field Upgradeable:		• Yes
SMI-S Version 1.1:		• Yes

Power

Supply Type:		• 1U 200 Watt
Input Voltage:		• 100-240 VAC
Input Frequency:		• 50-60Hz
Input Current:		• 4A
Power Factor Correction:		• 95%@110V, Full load
Power Consumption:		• 112 Watts (full configuration)
Thermal:		• 815 BTU/hour (full configuration)

Environmental

Operating Temperature:		• 32° to 104°F (0° to 40°C)
Storage Temperature:		• -4° to 158°F (-20° to 70°C)
Operating Humidity:		• 20% ~ 90% (Non-condensing)
Storage Humidity:		• 10% ~ 95% (Non-condensing)

Physical (approximate)

Form Factor:		• Tower
Dimesnsions (D x W x H):		• 10.7in x 6.6in x 10.2in (273mm x 167mm x 259mm)
Weight with No Drives Installed:		• 8.8 lbs (4.0 kg)

International Approvals

Emissions:		• CE Class A, FCC Class A, C-Tick Class A, VCCI Class A
Safety:		• CSA 60950-1, UL60950-1, IEC 60950-1, EN 60950-1

Warranty and Support

Warranty:		• 2-Year Limited*
Extended Warranty:		• Available
Support:		• 1 year, 9 hours per day / 5 days per week Technical Support

Available Configurations

DSN-1100-10:

• xStack Storage® 4X1GbE iSCSI SAN Array   with 5 SATA Bays