641027-B21 - HP 641027-B21 1.28TB MLC PCIe IO Accelerator SSD

Name: HP 641027-B21 1.28TB MLC PCIe IO Accelerator SSD
Brand: HP
SKU: 641027-B21

641027-B21 - HP 641027-B21 1.28TB MLC PCIe IO Accelerator SSD | US IT Hardware

Product overview

The HP 641027-B21 is a 1.28TB ioDrive Duo Multi-Level Cell PCIe IO accelerator designed for ProLiant servers. This solid-state drive delivers high-performance storage acceleration with 1.5GB/s read bandwidth and 1.1GB/s write bandwidth at 64KB block size. The device achieves 150,000 mixed IOPS at a 75/25 read-write ratio with 30 microsecond access latency for 512-byte operations. It connects via PCI Express 2.0 x4 or x8 interface and uses MLC NAND flash memory. The ioDrive Duo architecture integrates dual storage controllers on a single full-height, half-length PCIe card, enabling software RAID configurations in supported operating systems. This accelerator is optimized for enterprise environments requiring low-latency, high-throughput storage performance.

1.5GB/s read, 1.1GB/s write bandwidth
150,000 mixed IOPS at 75/25 read-write ratio
30 microsecond access latency for 512-byte ops
1.28TB MLC NAND flash storage capacity
PCI Express 2.0 x4 or x8 interface
Dual-controller architecture with software RAID support

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Featuring

Product Type
Manufacturer part #	641027-B21
Brand	HP
Condition	New
Model	ioDrive Duo
Series	ioDrive Duo
Capacity	1.28 TB
Card Type	Full-Height Half-Length x8 PCI-Express card
Generation	Generation 1
Technology	NAND Flash, MLC
Form Factor	Plug-in Card
Product Line	ioDrive Duo

Compatible systems

ProLiant DL385p Gen8, ML350 G6; Windows, RHEL, SLES, CentOS

HP ProLiant
Model: DL385p Gen8
Form factor: Rack
Generation: Gen8
Confirmed compatible from globalonetechnology.com
HP ProLiant
Model: ML350
Form factor: Tower
Generation: G6
Confirmed compatible from globalonetechnology.com

Best for

Database Acceleration
Reduces query latency and improves transaction throughput for high-frequency database workloads. The 150,000 mixed IOPS and 30 microsecond access latency enable rapid data access patterns typical of OLTP environments.
Virtualization
Accelerates virtual machine I/O operations across multiple guest systems. The 1.5GB/s read bandwidth and dual-controller architecture support concurrent VM storage demands with minimal contention.
Analytics and Data Warehousing
Improves scan performance and reduces time-to-insight for large dataset queries. The 1.1GB/s write bandwidth and high IOPS support sustained sequential and random access patterns.
Real-Time Processing
Enables low-latency data ingestion and processing for streaming applications. The 30 microsecond access latency ensures predictable response times for time-sensitive workloads.

Details

Shipping, warranty & returns

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HP Enterprise SSDs Enterprise SSDs

Usable Capacity	1.28TB

ioDimm Configuration	two individual ioDimms

4K Random Write Steady State	201,000 to 210,000

Performance

IOPS	150,000 IOPS 75/25 R/W Mix
IOPS Mix	75/25 R/W Mix
Access Latency	30 microseconds (512 Byte)
NAND Flash Type	Multi-Level Cell (MLC)
Read IOPS 512-byte	185,000
Write IOPS 512-byte	278,000
Peak 4K Read Latency	2.08 ms
Sequential Read Speed	1.5 GB/s
Sequential Write Speed	1.1 GB/s
Average 4K Read Latency	0.0422 ms
4K Random Write IOPS Peak	224,000
Low Queue Depth Read IOPS	48,403
Low Queue Depth Read Speed	189 MB/s
Low Queue Depth Write IOPS	93,740
Low Queue Depth Write Speed	366 MB/s
High Performance 4K Write Latency	2.80-2.82 ms
High Performance Steady State IOPS	90,000
High Performance Mode 4K Write IOPS	257,000

Interface	PCI Express 2.0 x4 / PCI Express x8
PCIe Lanes	PCI-Express 2.0 x8

Frequently asked questions

What are the read and write performance specifications for the HP 641027-B21?

The ioDrive Duo 1.28TB delivers 1.5GB/s read bandwidth and 1.1GB/s write bandwidth at 64KB block size. For random I/O, it achieves 150,000 mixed IOPS at a 75/25 read-write ratio with 30 microsecond access latency for 512-byte operations. These metrics represent combined performance from the dual integrated controllers.

What PCIe interface options does this accelerator support?

The HP 641027-B21 supports PCI Express 2.0 x4 or x8 interface configurations. This dual-mode support ensures compatibility with various ProLiant server architectures and allows IT teams to choose the interface mode that best matches their server capabilities and performance requirements.

What NAND flash memory type is used in the 641027-B21?

The device uses Multi-Level Cell MLC NAND flash memory. MLC technology provides a balance between performance, capacity, and cost, making it suitable for enterprise storage acceleration applications where sustained performance and reliability are required.

Can the ioDrive Duo be configured for redundancy?

Yes, the dual-controller architecture allows the ioDrive Duo to present two independent storage devices that can be configured in software RAID 0 or JBOD mode depending on the host operating system. This flexibility enables IT teams to implement redundancy strategies aligned with their availability requirements.

What operating systems are supported by the HP 641027-B21?

The device supports 64-bit Microsoft Windows Server, Red Hat Enterprise Linux, and SUSE Linux Enterprise Server. Specific version compatibility and driver requirements should be verified with HPE support documentation for your particular server platform and OS version.

What is the form factor of the ioDrive Duo accelerator?

The ioDrive Duo is a full-height, half-length PCIe card. This compact form factor allows deployment in standard ProLiant server PCIe slots without requiring special mounting hardware or modifications to the server chassis.

HP 641027-B21 1.28TB MLC PCIe IO Accelerator SSD