How many internal drives can it support?

The ThinkSystem RAID 9350-16i supports up to 16 internal SAS or SATA drives. The provided data also states that the 16i model uses four connectors to the drive backplanes. Those two details together define its internal storage reach.

How much cache does the controller include?

This model includes 4GB of integrated flash-backed cache. The cache size is specifically listed for the 16i version of the ThinkSystem RAID 9350 family. It is one of the core differentiators in the supplied specifications.

What type of storage interfaces does it support?

The controller is described as a 12 Gbps SAS/SATA RAID adapter. That means it is intended for internal SAS or SATA storage connectivity within the ThinkSystem RAID 9350 family. The supplied data does not add any other storage interface types.

Which adapter family does this product belong to?

It belongs to the Lenovo ThinkSystem RAID 9350 family. The provided data identifies it as the 9350-16i model and describes the family as internal 12 Gbps SAS RAID controllers. This helps buyers align it with related Lenovo storage controller platforms.

4Y37A72486 - Lenovo 4Y37A72486 16 internal ports, 4GB cache RAID adapter

Name: Lenovo 4Y37A72486 16 internal ports, 4GB cache RAID adapter
Brand: Lenovo
SKU: 4Y37A72486
Price: 1602 USD
Availability: InStock

4Y37A72486 - Lenovo 4Y37A72486 16 internal ports, 4GB cache RAID adapter | US IT Hardware

Product overview

The Lenovo ThinkSystem RAID 9350-16i 4GB Flash PCIe 12Gb Internal Adapter is an internal SAS RAID controller for server storage environments. It is part of the ThinkSystem RAID 9350 family and is designed as a 12 Gbps SAS/SATA RAID adapter with an internal PCIe 3.0 x8 host interface. The 16i model provides up to 16 internal SAS or SATA drive connections through four connectors to the drive backplanes. It also includes 4GB of integrated flash-backed cache. The family is described as supporting major RAID levels, including RAID-6 and RAID-60, and Lenovo management tools. This adapter is positioned within Lenovo’s internal RAID controller category for SAS and SATA storage connectivity, using a low-profile PCIe adapter form factor or custom form-factor depending on the family design. Its stated product identifier is 4Y37A72486.

PCIe 3.0 x8 host interface
16 internal SAS or SATA drives
4GB integrated flash-backed cache
12 Gbps SAS/SATA RAID controller
Four drive-backplane connectors
ThinkSystem RAID 9350 family

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Featuring

RAID Support
Manufacturer part #	4Y37A72486
Brand	Lenovo
Condition	New
Model	ThinkSystem RAID 9350-16i
Series	RAID 9350 family
Part Class	Advanced RAID adapter
Technology	RAID-on-Chip (ROC) 12 Gbps SAS controller
Form Factor	Plug-in card, internal
Cache Memory	4 GB Flash
Product Line	ThinkSystem
Product Type	RAID controller adapter

Best for

Server storage
Suitable for server storage setups that use an internal PCIe 3.0 x8 host interface and 12 Gbps SAS/SATA connectivity. The adapter is designed for internal deployment in Lenovo ThinkSystem environments.
Internal drive arrays
Fits systems requiring up to 16 internal SAS or SATA drives. The 16i design connects through four connectors to the drive backplanes.
RAID controller deployment
Appropriate for environments needing an internal SAS RAID controller with 4GB of integrated flash-backed cache. The family supports major RAID levels, including RAID-6 and RAID-60.

Frequently asked questions

What is the host interface of this RAID adapter?

The adapter uses a PCIe 3.0 x8 host interface. That interface is stated for the ThinkSystem RAID 9350 family and defines how the controller connects to the server platform. It is an important compatibility point for selecting a matching system slot.

Details

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Lenovo Enterprise Drives

Host Bus Type	PCIe 3.0

Host Transfer Rate	PCIe 3.0 x8
Drive Transfer Rate	12 Gb/s SAS

Networking Ports & Interfaces

Ports	16 internal SAS ports
Interface	PCI Express 3.0 x8
Connector Type	Internal SAS connectors
Internal Ports	16 internal ports
Supported Device Interface	12 Gb/s SAS; 6 Gb/s SATA

Lenovo 4Y37A72486 16 internal ports, 4GB cache RAID adapter