HP P04543-B21 800GB SAS SSD - SFF SC DS

Name: HP P04543-B21 800GB SAS SSD - SFF SC DS
Brand: HP
SKU: P04543-B21

Overview

The HP P04543-B21 is an 800GB SAS solid-state drive engineered for enterprise server environments where data integrity, consistent write performance, and high availability are paramount. Built in a 2.5-inch small form factor, it slots directly into HPE ProLiant servers equipped with Smart Carrier drive bays, supporting hot-swap replacement that minimizes downtime during maintenance or drive failures. The SAS interface offers inherent dual-port capability, allowing the drive to maintain connectivity through two independent paths—a critical feature in storage arrays and clustered server configurations that demand fault tolerance.

HP's Digitally Signed firmware verification adds a layer of supply-chain security by ensuring that only authenticated firmware runs on the drive, guarding against tampered or counterfeit components. The 800GB capacity is positioned for write-intensive or mixed-use workloads such as database transaction logs, virtualization host storage, and caching tiers where endurance and low latency matter more than sheer volume. While the per-gigabyte cost is higher than consumer-grade alternatives, the drive's enterprise warranty, proven compatibility with HPE infrastructure, and built-in security features justify the investment for production data center deployments.

Key Features

800GB SAS Wi SFF SC DS SSD

Specifications

Capacity

800GB

Interface

SAS

Form Factor

SFF (Small Form Factor) 2.5-inch

Drive Type

SC DS SSD (Smart Carrier, Digitally Signed)

HP Part Number

P04543-B21

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Pros & Cons

👍 Pros

SAS interface provides dual-port redundancy for high-availability server configurations
Digitally Signed firmware protects against unauthorized or compromised firmware
Smart Carrier tray enables hot-swappable drive replacement without server downtime
SFF 2.5-inch form factor fits standard enterprise server drive bays
Solid-state design eliminates mechanical failure risk and reduces latency compared to spinning disks

👎 Cons

800GB capacity is limited compared to SATA or NVMe alternatives at similar price points
SAS interface is not compatible with consumer or desktop systems
Higher cost per gigabyte than equivalent enterprise SATA SSDs
Requires a compatible HPE server chassis with Smart Carrier bays

Frequently Asked Questions

What interface does the HP P04543-B21 SSD use?

It uses a SAS (Serial Attached SCSI) interface, which is standard in enterprise servers and storage arrays for its reliability and dual-port capability.

What is the capacity of this drive?

The drive provides 800GB of usable solid-state storage, sized for write-intensive enterprise applications where endurance is prioritized over raw capacity.

What does "SC DS" mean in the drive's description?

SC stands for Smart Carrier, HP's hot-plug drive tray design, and DS stands for Digitally Signed firmware, which verifies the drive's firmware authenticity to protect against tampering.

Will this SSD fit in any server?

It is an SFF (Small Form Factor) 2.5-inch drive designed specifically for HPE ProLiant servers with compatible Smart Carrier drive bays.

Is this drive intended for read-heavy or write-heavy workloads?

The 800GB capacity point in HP's SAS SSD lineup is typically a mixed-use or write-intensive tier, suitable for databases, transaction logs, and similar demanding workloads.