Dell EMC PowerEdge RAID Controller H755 PCIe Gen4

Dell EMC PowerEdge RAID Controller H755 PCIe Gen4

Brand: Dell EMC | Category: Storage Systems

SKU: DELL-405AAYV | Part #: 405-AAYV | MPN: 405-AAYV

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About the Dell EMC PowerEdge RAID Controller H755 PCIe Gen4

The Dell EMC PowerEdge RAID Controller H755 is a next-generation RAID adapter engineered for 3rd Gen Intel Xeon Scalable and AMD EPYC 7003-series processors, providing PCIe 4.0 connectivity with sustained throughput exceeding 14 GB/s. The controller integrates a 4GB persistent write-back cache with battery-backed or supercapacitor-based cache vault technology, enabling safe asynchronous I/O operations and recovery guarantees during power events. Architecture supports mixed SAS/SATA/NVMe drive configurations with tiered caching strategies optimized for both sequential streaming and random access patterns.

The H755 addresses enterprise storage refresh cycles requiring elevated IOPS and latency reduction for virtualization, database acceleration, and analytics workloads. Native NVMe support via internal M.2 slots provides ultra-low-latency cache storage separate from main disk arrays, eliminating conventional bottlenecks in RAID rebuild times and cache coherency. Hardware-accelerated RAID processing offloads computational burden from CPU, preserving processor cycles for application workloads while maintaining consistent performance under sustained load.

Notable engineering includes active/active controller configurations for non-disruptive failover, advanced predictive analytics for disk health monitoring, and RAID 0/1/5/6/10/50/60 algorithm support with configurable strip sizing. The controller ships with firmware-enabled snapshots, rapid recovery options, and integrated management through Redfish APIs compatible with industry-standard orchestration platforms.

Ideal for

  • High-frequency trading and financial analytics requiring sub-millisecond latency arrays with persistent cache protection across transaction ledgers
  • Enterprise virtualization environments consolidating 50+ virtual machines with tiered storage acceleration reducing vMotion and snapshot times
  • Real-time data warehousing and in-memory database acceleration (SAP HANA, Oracle Exadata workload optimization)
  • Large-scale video transcoding and media rendering pipelines requiring sustained 10+ GB/s sequential throughput with RAID 6 fault tolerance
  • Kubernetes persistent volume backends for containerized databases demanding consistent IOPS with automated failover and hot-rebuild capability
  • Scientific computing and genomic sequencing analysis requiring rapid I/O with checkpoint/recovery guarantees across multi-node clusters

Technical specifications

ManufacturerDell EMC
ModelPowerEdge RAID Controller H755
Form FactorPCIe Gen4 x16 half-length adapter card
PCIe GenerationPCIe 4.0
Maximum Throughput14+ GB/s sustained
Cache Memory4 GB DDR4 DRAM with battery-backed vault
Cache Vault TechnologySupercapacitor-based persistent write-back protection
Supported RAID LevelsRAID 0, 1, 5, 6, 10, 50, 60
Drive Connectivity8x SAS/SATA ports + 2x internal NVMe M.2 slots
Maximum Drives Supported128 physical drives per controller
Drive TypesSAS 12Gb/s, SATA 6Gb/s, NVMe SSD
RAID Stripe Block Sizes64 KB to 1 MB configurable
RAID Rebuild TimeSub-hour rebuild on 18TB+ drives with accelerated algorithms
Fault ToleranceDual-controller hot-standby with non-disruptive failover
Memory InterfaceDDR4-3200 RDIMM
Processor Compatibility3rd Gen Intel Xeon Scalable, AMD EPYC 7003-series
Management InterfaceRedfish REST API, IPMI, Intelligent Platform Management
Firmware ProvisioningField-upgradeable via iDRAC or Dell EMC OpenManage Enterprise
Operating Temperature0–60°C
Power Consumption25W typical, 35W peak
Launch TimelineQ3 2022

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Technical Specifications

BrandDell EMC
CategoryStorage Systems
SKUDELL-405AAYV
Part Number405-AAYV
ConditionNew
ModelPowerEdge RAID Controller H755
Form FactorPCIe Gen4 x16 half-length adapter card
PCIe GenerationPCIe 4.0
Maximum Throughput14+ GB/s sustained
Cache Memory4 GB DDR4 DRAM with battery-backed vault
Cache Vault TechnologySupercapacitor-based persistent write-back protection
Supported RAID LevelsRAID 0, 1, 5, 6, 10, 50, 60
Drive Connectivity8x SAS/SATA ports + 2x internal NVMe M.2 slots
Maximum Drives Supported128 physical drives per controller
Drive TypesSAS 12Gb/s, SATA 6Gb/s, NVMe SSD
RAID Stripe Block Sizes64 KB to 1 MB configurable
RAID Rebuild TimeSub-hour rebuild on 18TB+ drives with accelerated algorithms
Fault ToleranceDual-controller hot-standby with non-disruptive failover
Memory InterfaceDDR4-3200 RDIMM
Processor Compatibility3rd Gen Intel Xeon Scalable, AMD EPYC 7003-series
Management InterfaceRedfish REST API, IPMI, Intelligent Platform Management
Firmware ProvisioningField-upgradeable via iDRAC or Dell EMC OpenManage Enterprise
Operating Temperature0–60°C
Power Consumption25W typical, 35W peak
Launch TimelineQ3 2022

Frequently Asked Questions about Dell EMC PowerEdge RAID Controller H755 PCIe Gen4

What does the Dell EMC PowerEdge RAID Controller H755 PCIe Gen4 do?

the Dell EMC PowerEdge RAID Controller H755 PCIe Gen4 suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. It is supported by major server platforms.

What are the headline specs of the Dell EMC PowerEdge RAID Controller H755 PCIe Gen4?

Key specifications for the Dell EMC PowerEdge RAID Controller H755 PCIe Gen4: new condition; manufacturer Dell EMC; model PowerEdge RAID Controller H755; form factor PCIe Gen4 x16 half-length adapter card; pcie generation PCIe 4.0; maximum throughput 14+ GB/s sustained; cache memory 4 GB DDR4 DRAM with battery-backed vault. Manufacturer part number 405-AAYV. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.