P40508-B21 - HPE 3.84TB SAS 12G RI SFF BC Value SAS MV SSD

HPE P40508-B21 — 3.84TB SAS 12G Read Intensive SFF BC Value SAS Multi-Vendor SSD

What it is

P40508-B21 is an HPE enterprise server SSD.
It’s a 3.84TB SAS 12Gb/s, Read Intensive (RI), 2.5" SFF drive that ships on an HPE Basic Carrier (BC) for hot-swap ProLiant and Synergy bays. “Value SAS” means cost-optimized enterprise SAS, and “Multi-Vendor” means HPE may source equivalent drives from approved manufacturers while keeping the same published spec.

Why buyers pick P40508-B21 (plain English)

• Big SATA-like capacity with SAS reliability
  You get 3.84TB per bay while staying on the higher-reliability SAS path.

• Read-intensive sweet spot
  Great for boot + read-heavy VM tiers, app servers, and caching layers.

• Hot-swap ready
  Comes pre-mounted in the HPE carrier, so it slides straight into SFF ProLiant bays.

• Stable long-term sourcing
  Multi-Vendor keeps supply consistent even as the underlying SSD model changes.

60-second spec box (P40508-B21)

Capacity

• 3.84 TB

Interface

• SAS 12 Gb/s (dual-port capable)

Form factor / carrier

• 2.5" SFF

• HPE Basic Carrier (hot-swap)

Workload class

• Read Intensive (RI)

• Endurance class: ~1 DWPD range (read-dominant workloads)

Firmware / platform

• HPE-qualified, digitally signed firmware for ProLiant/Synergy

Warranty

• 3-year HPE warranty

Use case

• High-capacity read-heavy storage: boot mirrors, VM datastores, app tiers, caching, general enterprise SSD pools.

Where it fits (and when to choose something else)

Perfect for:

• ProLiant/Synergy servers with SFF hot-swap bays

• Read-dominant virtualization and application workloads

• Replacing HDD tiers where you want strong read performance and high density

Choose something else if:

• You’re write-heavy → go Mixed-Use (MU) or Write-Intensive (WI) SSDs

• You want lowest latency / highest throughput → step up to NVMe Gen4/Gen5 SSDs

TL;DR

P40508-B21 is HPE’s 3.84TB SAS 12G Read-Intensive SFF SSD on Basic Carrier: a hot-swap, enterprise-qualified SAS SSD built for large, read-heavy server storage tiers.