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Glossary

A category used for the Blocks & Files Glossary document.

VSS

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VSS – Volume Shadow copy Service – also known as Microsoft shadow Copy. This is a Windows Server data backup feature for creating consistent point-in-time copies of data (called...

Zoned Namespace

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Zoned  Namespace - this refers to storage media whose capacity is split into separate areas or zones. See the entry for Zoned SSD.

ZNS

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ZNS - Zoned  Namespace - this refers to storage media whose capacity is split into separate areas or zones. See the entry for Zoned SSD.

Volume

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Volume – this is a named and sized logical area of storage containing blocks or files in a file storage device. It may correspond to a single storage drive...

VM

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VM – Virtual Machine – a software container with a guest operating system, such as Windows or Linux, and an application inside it. VMs are loaded into, and executed...

VLAN

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VLAN – Virtual Local Area Network – a subset of physical LAN which is logically isolated from the rest of the LAN. Network traffic between VLAN members is not...

Virtual Air Gap

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Virtual Air Gap – A virtual air gap is where there is an electrically signalling connection to the storage drive but it is somehow logically separated from the end...

VADP

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VADP – vSphere storage APIs for Data Protection. This is a VMware API that backs up and restores vSphere virtual machines (VMs). As VMware explains; a backup product using...

USB

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USB - Universal Serial Bus - an interconnect standard for connecting external peripheral devices to a desktop or notebook computer. USB allows easy, high-speed connections of peripherals to PCs...

UPS

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UPS - Uninterruptible Power Supply. This comes on automatically when the main power supply fails and ensure that computers and other devices in a data centre carry on running.

UDP

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UDP - User Datagram Protocol. This is a method of sending packets of data across an IP (Internet Protocol) network without error checking. An alternative TCP (Transmission Control Protocol)...

U.3

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U.3  - a storage drive bay in a rack enclosure based on the U.2 spec, using the same SFF-8639 connector, but supporting SAS, SATA or NVMe interface drives in...