Cloud Infrastructure Facts & Technical Glossary
Clear, unvarnished explanations of hardware virtualization, IOPS throttling, BGP routing, and memory architecture.
What Is Unmetered Bandwidth?
“Unmetered bandwidth means you can transfer as much incoming and outgoing network data as your port speed allows without receiving overage fees or per-gigabyte billing spikes.”
In hosting terminology, "unmetered" indicates that data transfer volume is not capped or billed per gigabyte. Instead, your server is assigned a dedicated network port (e.g., 1 Gbps, 2.5 Gbps, or 10 Gbps) and can transmit continuous traffic 24/7 at that speed without artificial shutdown limits.
NVMe vs SATA SSD vs HDD for VPS Performance
“Enterprise PCIe Gen4 NVMe drives deliver up to 7,000 MB/s read speeds and 800,000+ random IOPS—more than 14x faster than standard SATA SSDs (550 MB/s) and over 100x faster than mechanical HDDs.”
NVMe (Non-Volatile Memory Express) is a host controller interface designed specifically for solid-state storage over high-speed PCIe lanes, removing the SATA bus bottleneck and reducing storage latency to microsecond thresholds.
What Is a VPS Snapshot & How Does It Differ from Backups?
“A snapshot is an instantaneous point-in-time image of your server disk state, allowing you to restore your entire operating system, files, and configurations back to that exact second in under 60 seconds.”
A snapshot freezes block-level pointers on the underlying storage volume (using Copy-on-Write) without requiring a full data duplication, making snapshot creation almost instantaneous and non-disruptive to running workloads.
Dedicated vCPU vs Shared vCPU: Understanding Noisy Neighbors
“Shared vCPU shares physical processor cores with other virtual machines with burstable allowances, while Dedicated vCPU (VDS) reserves 100% of dedicated CPU threads exclusively for your workload with zero contention.”
In virtualized compute, a shared vCPU uses hypervisor time-slicing to share physical core cycles among multiple tenants. A dedicated vCPU locks 1:1 hyperthreads to your virtual machine exclusively.
What Is Kernel-Based Virtual Machine (KVM) Virtualization?
“KVM provides true full hardware virtualization with isolated kernel space, custom OS kernel loading, independent memory allocation, and hardware-assisted encryption (AMD SEV/Intel VT-x).”
KVM turns the Linux kernel into a Type-1 hypervisor. Each virtual machine operates as a standard Linux process with its own private virtualized hardware (NIC, disk, RAM, BIOS/UEFI), preventing host kernel sharing or memory overselling.