Lenovo DE Ctrller DE4000F 32G Hicless 2U24 SFF G2 - 7Y76A00GWW

Lenovo 7Y76A00GWW DE4000F All-Flash 2U24 SFF Dual-Controller Storage Array

Overview

The Lenovo ThinkSystem DE4000F is a 2U, 24-bay all-flash storage array engineered for organizations that need consistent low latency and high throughput without the overhead of spinning-disk tiers. The 7Y76A00GWW is the HICless Gen2 configuration — meaning it ships without a host interface card pre-installed, giving storage architects flexibility to specify the exact host connectivity fabric that fits their environment rather than paying for a port type they won't use. If you're sizing storage for a network video recorder infrastructure, virtualization cluster, or latency-critical application back-end, this platform belongs on the shortlist.

Key Features

• 24 x SFF SSD Bays in 2U: packing 24 small-form-factor drives into two rack units means maximum flash density per rack space — critical when you're building out a dedicated storage row and every U counts. No large-form-factor compromise on drive counts.
• Dual Controller Architecture: two active controllers eliminate the single point of failure that makes single-controller arrays unsuitable for production workloads. If one controller fails or requires a firmware update, the other continues serving I/O — zero-downtime maintenance is a realistic outcome, not a marketing claim.
• 64GB Cache: the 64GB cache pool is shared across both controllers and absorbs write bursts before they hit flash, smoothing out the spiky write patterns common in surveillance recording, database logging, and VM swap — the workloads where all-flash arrays earn their keep.
• 12Gb/s SAS Backend Connectivity: the 12Gb/s SAS fabric between controllers and drives delivers roughly 2× the bandwidth of the previous 6Gb generation. On a fully populated 24-drive array, that headroom matters when sequential workloads (video ingest, backup streams) compete with random IOPS from transactional applications.
• HICless Configuration (Flexibility by Design): the HICless build ships without a host interface card, so you install only the connectivity you need — whether that's iSCSI, Fibre Channel, or InfiniBand. This avoids stranded port capacity and keeps upfront cost aligned with actual host-side infrastructure.
• All-Flash, No Tiering Complexity: eliminating spinning disks removes tier management from the operational picture. Every volume gets flash-speed response — no cache misses that fall back to disk, no tiering policies to tune, no latency spikes when the cache is cold.
• ThinkSystem Gen2 Platform: the Gen2 designation means this controller generation supports current Lenovo management tooling and is positioned for the firmware lifecycle that enterprise procurement teams need for multi-year support agreements.
• Rack-Mount 2U Form Factor: standard EIA rack mounting integrates cleanly into existing data center racks. At 2U, it fits single-rack and multi-rack deployments without requiring specialized enclosures or custom rail kits beyond what Lenovo ships for the platform.

Integration and Compatibility

The 7Y76A00GWW is part of the broader enterprise storage ecosystem within the Lenovo ThinkSystem line. The HICless design means host connectivity is determined at installation — common choices include iSCSI for IP SAN environments, 16Gb or 32Gb Fibre Channel for FC fabrics, and InfiniBand for high-performance computing adjacency. Before ordering, confirm your host bus adapter type and ensure the selected HIC (purchased separately) matches the fabric your servers already run.

For Lenovo ThinkSystem server environments, the DE4000F integrates with SANtricity storage management software, which provides per-volume performance monitoring, snapshot scheduling, and remote mirroring configuration without requiring third-party management tools. For mixed-vendor environments, the standard block-storage protocol support means compatibility with VMware vSphere, Microsoft Hyper-V, and Linux-based hypervisors is achievable through standard iSCSI or FC initiators.

If you're deploying this array to back a video surveillance infrastructure, pair it with a network video recorder platform that supports iSCSI target storage — the sequential write pattern of continuous video ingest is well-matched to an all-flash array's write cache behavior, particularly for high-camera-count deployments where simultaneous stream writes would saturate a spinning-disk array. For switch-level planning on the IP fabric side, review your network switching infrastructure to ensure you have non-blocking 10GbE or 25GbE ports available for iSCSI host connections.

Frequently Asked Questions

Q: What does HICless mean on the 7Y76A00GWW, and does it ship with any host ports?

A: HICless means the array ships without a host interface card installed. Host-side connectivity — iSCSI, Fibre Channel, or InfiniBand — requires purchasing and installing a separate HIC. The base controllers still include management ports, but no data-path host ports are present out of the box. This is intentional: you specify only the connectivity your environment needs.

Q: How many drives does the DE4000F support, and what type?

A: The 2U24 SFF configuration supports up to 24 small-form-factor SSDs. This is an all-flash array — spinning hard drives are not a supported drive type in the DE4000F platform.

Q: Is the dual-controller configuration active-active?

A: The DE4000F uses a dual-controller design. Both controllers are active and share the 64GB cache pool, enabling continued I/O if one controller fails or is taken offline for maintenance. Verify specific active-active volume ownership behavior with Lenovo's SANtricity documentation for your firmware version.

Q: What backend interface connects the controllers to the drives?

A: The DE4000F uses a 12Gb/s SAS backend fabric between the controllers and the SSD drive pool. This is the drive-side interface, separate from the host-side connectivity provided by the HIC.

Q: Can the 7Y76A00GWW be used for video surveillance storage?

A: Yes. All-flash arrays handle the continuous sequential write streams of video surveillance well, and the 64GB cache absorbs write bursts from multi-camera ingest. Pair it with an NVR or VMS platform that supports iSCSI target storage, and ensure your HIC selection matches your network fabric. The 24-bay capacity scales storage density without expanding rack footprint.

Jerry Tildsen

The 7Y76A00GWW is the configuration I'd specify when a client has already standardized on a particular host fabric and doesn't want to pay for a pre-installed HIC they'll never use. The HICless Gen2 build keeps the initial unit cost lean while the dual-controller, 64GB cache architecture delivers what actually matters in production: no single point of failure and enough cache headroom to absorb write spikes without reaching the flash layer on every I/O burst.

Technical Highlights:

• 64GB Shared Cache: split across dual controllers, this cache pool is the buffer that makes all-flash feel fast even under concurrent write load — surveillance ingest, database logs, and VM swap all compete for this resource, and 64GB is meaningful headroom for 24-bay-scale workloads.
• 12Gb/s SAS Backend: at full 24-drive population, 12Gb/s SAS gives you roughly double the aggregate bandwidth of a 6Gb predecessor — the difference shows up in sequential throughput benchmarks and in sustained ingest workloads where you're writing to many drives simultaneously.
• HICless Flexibility: ordering without a pre-installed HIC means your host connectivity decision isn't locked in at purchase. If the environment migrates from iSCSI to 32Gb FC in year two, you're swapping a HIC, not replacing the array.

Deployment Considerations:

• The HIC must be selected and ordered separately — confirm compatibility between your chosen HIC, the host bus adapters in your servers, and the fabric switches before the array ships. A mismatch here stalls commissioning by days.
• This is an all-flash-only platform — do not plan for hybrid spinning-disk expansion. If your retention requirements exceed what 24 SSDs can hold cost-effectively, evaluate whether a hybrid or capacity-optimized array in the DE series better fits the budget.

The DE4000F in the 7Y76A00GWW configuration is the right call for a shared SAN block storage tier behind a multi-host virtualization cluster or a high-camera-count surveillance infrastructure where you need flash performance, dual-controller resilience, and the freedom to specify host connectivity after the hardware decision is made.