Explore top Network Attached Storage (NAS) devices that offer iSCSI targets for efficient block storage, backups, and virtualization. The selections below cover multiple brands, capacities, and form factors to fit growing networks and temp data demands. Each model supports iSCSI, high-capacity storage, and robust data protection features essential for small business environments.
| Product | Brand | Storage | Notes |
|---|---|---|---|
| Synology DiskStation DS1819+ | Synology | 32TB HDD | iSCSI service, DSM OS, 4 LAN ports |
| Synology DiskStation DS2419+ | Synology | 48TB HDD | Expansion capable, iSCSI target support |
| QNAP TVS-872N | QNAP | 16TB HDD | iSCSI IP SAN, multi-feature OS |
| BUFFALO TeraStation 5420DN (48TB) | BUFFALO | 48TB HDD | Business-grade NAS with iSCSI readiness |
| Synology DiskStation DS620slim (12TB HDD) | Synology | 12TB HDD | Compact NAS with iSCSI support |
Synology DiskStation DS1819+ iSCSI NAS Server

The DS1819+ is designed as a versatile NAS for iSCSI targets, backups, file storage, and domain services. It features an Intel Atom C3538 Quad-Core 2.1GHz CPU, 16GB DDR4 memory, and a total 32TB HDD capacity across eight 4TB drives. Four 1GbE LAN ports support Link Aggregation and Failover. Plus, it includes USB 3.0 ports and eSATA for expansion. The DSM operating system provides robust storage management, snapshots, and iSCSI LUN provisioning, suitable for growing business workloads.
Synology DiskStation DS2419+ iSCSI NAS Server

The DS2419+ expands capacity with 48TB of HDD storage and strong iSCSI target capabilities. Powered by a capable processor and 16GB memory, it supports expansion options and high-availability storage. The unit runs Synology DSM, offering efficient data protection, file sharing, and backup services, making it suitable for virtualization and business continuity planning.
QNAP TVS-872N Multi-Gig NAS With iSCSI

The TVS-872N is a high-performance NAS featuring iSCSI/IP-SAN support, an Intel Core i3-8100T 3.1GHz CPU, and 8GB DDR4 RAM. It ships with 16TB of storage and offers extensive virtualization, media, and file services. The platform includes QNAP QTS OS with features like Virtualization Station, Container Station, and Hybrid Backup, enabling flexible deployment for small offices and remote sites needing reliable iSCSI targets.
BUFFALO TeraStation 5420DN 4-Bay (48TB)

The BUFFALO TeraStation 5420DN provides a robust, business-oriented NAS with 48TB total storage and RAID capabilities. It is designed for stability, security, and data protection, featuring a closed-system design with 256-bit encryption and two-factor authentication. iSCSI compatibility supports efficient storage provisioning for backups and virtualization workloads typical in small business environments.
Synology DiskStation DS620slim (12TB HDD)

The DS620slim offers a compact design with 12TB of HDD storage and iSCSI target support. Powered by an Intel Celeron J3355 Dual-Core 2.0GHz CPU, it includes 6GB DDR3L RAM and dual LAN ports with Link Aggregation/Failover. It functions well for smaller teams needing reliable shared storage, backups, and virtualization-ready iSCSI provisioning in a space-constrained environment.
Buying Guide: iSCSI NAS For Small Businesses
- iSCSI performance and CPU: Choose a model with a capable processor and enough RAM to handle multiple iSCSI sessions, backups, and virtualization workloads without bottlenecks.
- Storage capacity and expandability: Assess baseline storage needs and future growth. Look for NAS with scalable expansion bays or expansion units and RAID support for data protection.
- Networking and link aggregation: Favor devices with multiple Gigabit or 2.5/10GbE ports and active link aggregation to maximize throughput and provide redundancy.
- Data protection and DSM/QTS features: Consider built-in snapshots, replication, encryption, and backup integrations. DSM/QTS provide robust app ecosystems for backup, synchronization, and VM hosting.
- Management and ecosystem: A user-friendly interface, remote access options, and compatibility with virtualization platforms (VMware, Hyper-V, VirtualBox) simplify deployment.
- Security and reliability: Look for 256-bit encryption, secure default settings, and routine firmware updates. Redundant power options or hot-swappable drives add resilience.
- Physical footprint: If space is limited, DS620slim or compact models may fit better, while larger deployments may benefit from 4-bay or 8-bay units with expansion.
- Cost of ownership: Factor in drive purchasing, warranty terms, and potential expansion costs to estimate total lifecycle expenses across several years.
- Use-case alignment: For file storage and backups, prioritize storage capacity and reliability. For virtualization or IP SAN, emphasize iSCSI performance and CPU headroom.