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A virtual data room (VDR) is a secure online platform that lets you share documents with various parties during M&A, due diligence and other financial transactions. VDRs come with a variety of features which make them more valuable to dealmakers than cloud storage applications and other document sharing tools. They also concentrate on security, which makes them better for confidential business information than cloud-based services for consumers that are not secure.
Storage virtualization is the layer of abstraction that software provides between physical storage devices and applications. It allows for a more efficient and flexible storage resource utilization by reducing the requirement for redundancy in hardware, easing data transfers, and streamlining complex management functions such as snapshots and replicas. It also helps reduce costs by eliminating the need to forecast the future storage requirements, pay for all needed capacity up front or purchase and manage multiple appliances to meet the demands of expansion.
The most common virtualized storage is network-based virtualization. It offers a pool storage to applications and servers via the network, for instance disks in a Fibre Channel storage area network (SAN) or Internet Small Computer System Interface storage area network (iSCSI). It uses redundant arrays of independent disks technology (RAID) to improve performance and protect data in the case that one drive fails. However, the physical location of the disk and the hardware used are hidden from the users and applications.
Array-based virtualization of storage takes the next step by using a storage controller to combine storage from different arrays and display it as a single pool for applications. This lets enterprises use more cost-effective storage tiers that can include solid-state drives and hard disk drives of varying capacities, and hide the physical location of these various types of storage from both servers and users.
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