Lenovo 2U12 Chas - 7Y70A00YWW

Lenovo 7Y70A00YWW ThinkSystem DE2000H 2U 12-Bay Hybrid Storage Array

Overview

The Lenovo 7Y70A00YWW is the controller enclosure for the ThinkSystem DE2000H hybrid storage array — a 2U, 12-bay large-form-factor (LFF) chassis designed to anchor entry-level SAN or DAS deployments where you need a balance of cost control, controller redundancy, and room to grow capacity without a full midrange commitment. This is a controller-only purchase (0 TB shipped); drives are sourced and configured separately, giving procurement teams flexibility to right-size capacity at order time rather than paying for a fixed bundle.

The DE2000H series positions itself between basic direct-attach disk shelves and the complexity of full enterprise arrays. If your environment needs dual-controller resilience and a structured block-storage platform but does not justify the licensing and management overhead of a high-end SAN, this chassis is the entry point worth evaluating. It ships in black and occupies 2U in a standard rack, leaving room in most 42U cabinets for compute and switching alongside it.

Key Features

• 12 LFF Drive Bays: Large-form-factor bays accept 3.5-inch drives — the standard footprint for high-capacity spinning disks. For a 2U chassis this is a strong bay density, meaning you can reach meaningful raw capacity without expanding to a second shelf. If your workload is write-heavy with large sequential I/O (video surveillance recording, backup targets, bulk file repositories), LFF drives typically deliver better cost-per-TB than SFF alternatives at this tier.
• Dual Gen2 Controllers, 8 GB Cache Each: Two controllers ship standard — not an optional add-on. Each carries 8 GB of cache, so the system presents a combined 16 GB of controller cache for read/write operations. Dual controllers also provide a failover path: if one controller fails, the surviving controller continues serving I/O, which is the minimum acceptable posture for any storage system in a production environment. Single-controller arrays offer no such continuity.
• Hybrid Storage Architecture: The DE2000H is classified as a hybrid array, meaning the platform supports a mix of spinning HDD and SSD media in the same enclosure. This matters operationally — you can tier hot data onto flash and park cold data on higher-capacity spinning disks without deploying separate arrays or a separate tiering appliance. For surveillance or data-intensive applications with mixed access patterns, hybrid architecture avoids the cost of an all-flash array while still providing flash-level latency on frequently accessed data sets.
• Entry-Level Cost Positioning: Lenovo describes this as a low-cost entry-level system. That is a deliberate positioning choice, not a marketing hedge — it means the DE2000H trades some of the advanced replication, thin-provisioning, and analytics features found in midrange arrays for a lower acquisition cost and simpler configuration. For teams deploying storage behind an NVR cluster or as a secondary backup target, those advanced features are rarely exercised anyway.
• 2U Rack Form Factor: Two rack units is the standard footprint for this class of array. It integrates cleanly into existing 19-inch racks alongside ThinkSystem servers without requiring a dedicated storage rack. Height-conscious deployments in edge data closets or branch server rooms will appreciate the compact footprint.
• Security and Simplicity by Design: Lenovo positions the DE2000H around four attributes: performance, simplicity, capacity, and security. For integrators deploying storage in regulated environments, the security attribute signals support for drive-level security features (Self-Encrypting Drives are a common option at this tier), though specific SED support and encryption specifications should be confirmed in the Lenovo DE2000H configuration guide prior to procurement.

Integration and Compatibility

The 7Y70A00YWW is the controller chassis for the Lenovo ThinkSystem storage line. It is designed to integrate into environments built around SAN and DAS storage architectures. Compatibility with specific host bus adapters, switches, and operating environments should be validated against the Lenovo DE2000H interoperability matrix — Lenovo publishes a compatibility guide covering supported HBAs, SFPs, and OS versions for the DE2000H family.

For surveillance-specific deployments, integrators should validate write queue depth and sustained sequential write performance against the camera count and bitrate budget before finalizing. Hybrid arrays at this tier are well-suited as NVR storage backends where a mix of active recording (hot) and retained footage (warm/cold) maps naturally to the hybrid tiering model. For switching infrastructure connecting iSCSI or FC hosts to this array, ensure your fabric matches the controller interface type specified in the full DE2000H configuration sheet.

Frequently Asked Questions

Q: Does the 7Y70A00YWW include drives?

A: No. The 7Y70A00YWW ships as a controller enclosure only — 0 TB. Drives are ordered separately and installed into the 12 LFF bays. This allows you to configure capacity independently based on your workload requirements.

Q: How many controllers does the DE2000H chassis include, and does that provide redundancy?

A: The 7Y70A00YWW includes two Gen2 controllers, each with 8 GB of cache. Dual controllers provide active-active or active-passive failover depending on configuration, so if one controller fails, the other continues serving I/O — a basic requirement for any production storage deployment.

Q: What drive form factor does the 7Y70A00YWW support?

A: The chassis has 12 LFF (large-form-factor) bays, designed for 3.5-inch drives. LFF is the standard footprint for high-capacity HDDs and is a common choice for capacity-optimized workloads such as video retention and backup.

Q: Is this a SAN, DAS, or NAS system?

A: The DE2000H is classified as a DAS/SAN storage system — it connects to hosts via block-level protocols (iSCSI or Fibre Channel, depending on controller configuration). It is not a NAS device and does not serve file-level protocols like NFS or SMB natively.

Q: What is the rack space requirement for the 7Y70A00YWW?

A: The chassis occupies 2U in a standard 19-inch rack. This is a typical footprint for entry-level storage arrays and integrates alongside most 1U and 2U rack servers without special spacing requirements.

Ted Perry

The 7Y70A00YWW is the physical starting point for a ThinkSystem DE2000H deployment — you are buying the controller enclosure with dual Gen2 controllers at 8 GB cache each, zero drives, and 12 LFF bays waiting to be populated. That controller-first model is deliberate: it lets you size the platform to your actual capacity needs rather than absorbing the cost of a pre-configured bundle that may overshoot or undershoot your workload.

Technical Highlights:

• Dual 8 GB Controller Cache (16 GB Combined): Each of the two Gen2 controllers carries its own 8 GB cache, giving the array 16 GB of aggregate cache for I/O staging. For mixed-workload environments with bursty write patterns — camera recording during peak hours, for example — controller cache absorbs the burst and drains to disk asynchronously, protecting write latency under load.
• 12 LFF Bays in 2U: Twelve large-form-factor slots in a 2U chassis is a competitive bay count for entry-level SAN arrays. Populated with 16 TB or 20 TB drives, a single 7Y70A00YWW chassis can hold 192–240 TB raw — enough capacity for multi-camera surveillance retention well beyond typical 30-90 day requirements without adding expansion shelves.
• Hybrid Architecture (HDD + SSD Mix): The DE2000H platform supports hybrid drive configurations — spinning disks for bulk capacity, SSDs for hot-tier acceleration — within the same chassis. This avoids deploying a separate all-flash tier for the subset of data that genuinely needs it, keeping the cost model rational for workloads like active surveillance plus long-term archive.

Deployment Considerations:

• This is a controller enclosure purchase only — drives, rail kit, and host-side HBAs or iSCSI NICs are separate line items. Build the full BOM before committing to procurement; the per-bay cost of the final system depends heavily on drive selection.
• Confirm the specific controller interface type (iSCSI vs. FC) in the DE2000H configuration guide before ordering host-side switching and HBAs — the DE2000H family ships in multiple controller variants, and the 7Y70A00YWW part number alone does not specify the host interface in the evidence available here.

This chassis is the right anchor for a mid-size physical security deployment that needs structured block storage behind an NVR cluster — particularly where a mix of high-write active recording and long-retention cold footage maps well to the hybrid tiering model and where dual-controller availability is non-negotiable.