Global One Blog.

// expert guides on HPE servers, storage & enterprise networking

SSDs

Comparing Solid State Drives (SSD) and Hard Disk Drives (HDD) in HPE Server Systems

SSDs and HDDs each still have a place in HPE servers — the trick is knowing which factor matters for your workload. Here's how they compare on performance, durability, capacity, and cost, and how to choose. Last updated: 2026 The ch
▸ Jun 28, 2023
SSDs

Understanding SSDs: Single-Level Cell vs Multi-Level Cell

The type of NAND flash inside an SSD — SLC, MLC, TLC, or QLC — sets its endurance, capacity, and cost. Here's what the bits-per-cell trade-off really means, and how it maps to enterprise HPE drives. Last updated: 2026 Every so
▸ Jun 26, 2023
Servers

HPE Proliant DL380 Servers: A History of Performance and Reliability

For more than two decades and over a dozen generations, the HPE ProLiant DL380 has been the default 2U rack server — and one of the best-selling servers ever made. Here's its history, what kept it on top, and where to find parts for e
▸ May 12, 2023
Memory

What is CAS Latency for Memory Modules?

CAS latency (CL) is one of the more misunderstood memory specs — especially on DDR5, where the numbers look high but real latency barely changed. Here's what CL actually means for HPE server memory, and why it's rarely the spec you sh
▸ Apr 25, 2023
Memory

The Importance of Memory Speed for HPE Server Memory

Memory speed shapes how fast an HPE server moves data between RAM and CPU — but on a server the speed you actually get is set by the processor and how you populate the DIMMs, not the module alone. Here's what memory speed means, and h
▸ Apr 22, 2023
Drives

Understanding Spindle Speed and Choosing the Right HPE Server Hard Drive

Spindle speed — 7.2K, 10K, or 15K RPM — is one of the main things that separates HPE hard drives. Here's how it affects performance, which speed suits which workload, and the one question to ask before you even pick an RPM. Las
▸ Apr 20, 2023
Drives

Understanding Data Transfer Rate in Hard Disk Drives

A hard drive's data transfer rate is easy to misread — the big interface number (6 or 12 Gb/s) isn't the speed you'll actually get. Here's what really determines HDD throughput on an HPE server, and the sustained-vs-burst distinction
▸ Apr 19, 2023
Drives

Exploring the Impact of Rotational Speed on HPE Hard Disc Drive Performance

Rotational speed is why a 15K hard drive feels snappier than a 7.2K one — but it only affects part of the delay, and the effect is measurable in milliseconds. Here's the physics of how RPM shapes HPE hard drive performance. Last upda
▸ Apr 19, 2023
SSDs

What is a M.2 2280 Solid State Drive (SSD)?

M.2 2280 is the most common SSD form factor — but the "2280" is just a size, and the interface underneath can be SATA or PCIe. Here's what it all means, and how M.2 is actually used in an HPE server (hint: mostly for boot). Last upda
▸ Apr 13, 2023
!