What is the maximum drive capacity supported by the Dell PERC H755 405-AAZD?

The PERC H755 supports up to 240 drives total, connected via dual 8-port internal SAS connectors (2x8 configuration). This enables large-scale storage arrays with flexible RAID configurations including RAID 50 and RAID 60 for distributed redundancy across multiple drive groups.

What RAID levels does the 405-AAZD controller support?

The PERC H755 supports RAID 0, 1, 5, 6, 10, 50, and 60. RAID 6 and 60 provide dual-parity protection against simultaneous drive failures, while RAID 50/60 distribute parity across multiple drive groups for improved performance in large arrays.

How does the 8GB NV cache improve storage performance?

The 8GB non-volatile (NV) cache with flash-backed write-back capability stores frequently accessed data, reducing latency for repeated I/O operations. This minimizes main storage device access, accelerating data retrieval speeds and improving application performance, especially for database and virtualization workloads with repetitive access patterns.

Is the PERC H755 compatible with existing SAS/SATA drives?

Yes, the controller supports 12Gb/s SAS, 6Gb/s SAS/SATA, and 3Gb/s SAS/SATA drives, enabling mixed-speed configurations. This backward compatibility allows integration into existing storage environments without requiring complete drive replacement.

What PowerEdge server models support the 405-AAZD controller?

The PERC H755 is compatible with PowerEdge R350, R450, R550, R650, R650XS, R660, R660XS, R750, R750XA, R750XS, R760, T550, and HS5610 models. Compatibility varies by generation; consult Dell's support matrix for specific server configuration requirements.

What is the data transfer rate of the PERC H755 405-AAZD?

The controller delivers 12Gb/s (1.5GB/s) sustained data transfer rate via its SAS interface. PCIe 4.0 connectivity provides 16GB/s per-lane bandwidth, ensuring the controller does not become a bottleneck for high-speed storage arrays.

405-AAZD - Dell 405-AAZD 12Gb/s SAS RAID Controller

Name: Dell 405-AAZD 12Gb/s SAS RAID Controller
Brand: Dell
SKU: 405-AAZD

405-AAZD - Dell 405-AAZD 12Gb/s SAS RAID Controller | US IT Hardware

Product overview

The Dell PERC H755 (405-AAZD) is an enterprise-grade SAS RAID storage controller designed for PowerEdge servers requiring high-performance storage management. Featuring 12Gb/s SAS interface with PCIe 4.0 connectivity, the controller delivers accelerated data transfer rates and reduced latency for demanding workloads. The 8GB NV (non-volatile) cache with flash-backed write-back capability enables efficient data processing and optimized system performance by minimizing storage bottlenecks. Supporting up to 240 drives with flexible RAID levels (0, 1, 5, 6, 10, 50, 60), the H755 provides fault-tolerant architecture suitable for mission-critical applications including databases, virtualization, and high-performance computing. The controller's hardware RAID support and compatibility with 12Gb/s, 6Gb/s, and 3Gb/s SAS/SATA drives ensures seamless integration into existing enterprise storage environments. Ideal for data centers requiring scalable, reliable storage solutions with enterprise-class performance and redundancy.

12Gb/s SAS interface with PCIe 4.0 connectivity.
8GB NV cache with flash-backed write-back capability.
Supports 240 drives with RAID 0/1/5/6/10/50/60.
Dual 8-port internal SAS connectors for drive connectivity.
Hardware RAID acceleration for enterprise workloads.
Compatible with 12Gb/s, 6Gb/s, and 3Gb/s SAS/SATA drives.

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Featuring

Manufacturer part #	405-AAZD
Brand	Dell
Condition	New
Model Name	PERC H755
Product Line	PowerEdge RAID Controller (PERC)
Product Type	SAS/SATA RAID Storage Controller
RoHS Compliant	Yes
Hot Swap Support	Yes, hot-swappable drives
Part Number (SKU)	405-AAZD
RAID Support Type	Hardware RAID
Management Interface	Dell OpenManage Enterprise, iDRAC

Compatible systems

The PERC H755 (405-AAZD) is fully compatible with Dell PowerEdge 15th, 16th, and 17th generation servers (R350-R760, T550, HS5610). Supports Windows Server 2012-2022, RHEL 7+, SUSE SLES 12+, and VMware vSphere 6.5+. Requires PCIe 4.0 slot and supports 12Gb/s, 6Gb/s, and 3Gb/s SAS/SATA drives up to 240 total drives.

Dell PowerEdge
Model: R350
Form factor: 1U
Generation: 15th Gen
Single-socket 1U server, supports PERC H755 in PCIe slot
Dell PowerEdge
Model: R450
Form factor: 2U
Generation: 15th Gen
Dual-socket 2U server, supports PERC H755 in PCIe slot
Dell PowerEdge
Model: R550
Form factor: 2U
Generation: 15th Gen
Dual-socket 2U server with expanded PCIe support
Dell PowerEdge
Model: R650
Form factor: 1U
Generation: 16th Gen
Single-socket 1U server with PCIe 4.0 support
Dell PowerEdge
Model: R750
Form factor: 2U
Generation: 16th Gen
Dual-socket 2U server with PCIe 4.0 support
Dell PowerEdge
Model: R760
Form factor: 2U
Generation: 17th Gen

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Maximum Virtual Disks	64 virtual disks in RAID mode

RAID Levels Supported	RAID 0, 1, 5, 6, 10, 50, 60

Compatible PowerEdge Models	R350, R450, R550, R650, R650XS, R660, R660XS, R750, R750XA, R750XS, R760, T550, HS5610

Supported Operating Systems	Windows Server 2012-2022, RHEL 7+, SUSE SLES 12+, VMware vSphere 6.5+

Storage

Buffer Size	8GB
Cache Function	Write-back, write-through, no-cache modes
Write Back Cache	Flash-backed cache
Cache Memory Type	8GB DDR4 2666 MT/s NV Cache
Drive Types Supported	12Gb/s SAS, 6Gb/s SAS/SATA, 3Gb/s SAS/SATA
Maximum Drive Support	240 drives

Weight	5 lbs
Form Factor	Full-height PCIe card

Interface Type	PCIe 4.0
SAS Connectors	2x8 Internal (dual 8-port)

Dell 405-AAZD 12Gb/s SAS RAID Controller

Product overview

Featuring

Compatible systems

Details

Shipping, warranty & returns

Customer reviews

Storage

Processor

Network & Communication

Power Consumption

Physical Characteristics

Interface/Ports

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