Fernando - Root Fan

July 24, 2025July 24, 2025

Oracle Cloud Infrastructure OCI Foundations

Mastering Oracle Cloud Infrastructure (OCI): Key Concepts Every Beginner Should Know

Oracle Cloud Infrastructure (OCI) has become a powerful platform for organizations seeking scalable, secure, and cost-effective cloud solutions.

Whether you’re preparing for the OCI Foundations Associate certification or simply exploring how OCI works, understanding its core concepts is essential.

June 10, 2025June 11, 2025

PhysicalDisk → CellDisk → GridDisk on Exadata

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Here’s a clear explanation of the relationship between physical disks, cell disks, and grid disks in Oracle Exadata:

🔁 Relationship Overview

PhysicalDisk → CellDisk → GridDisk

Think of it as a layered storage abstraction:

Layer	Description
PhysicalDisk	The actual hardware disk (HDD or Flash) inside the Exadata storage server
CellDisk	A partition of the PhysicalDisk created and managed by Exadata software
GridDisk	A further logical slice of a CellDisk, exposed to ASM as usable storage