A virtual dataroom (VDR) lets you securely share documents online with multiple parties involved in M&A, due-diligence and other financial transactions. VDRs provide a range of features which can make them more valuable to dealmakers than cloud storage tools and other document sharing applications. They also concentrate on security, which makes them better for sensitive business information than cloud-based services for consumers with minimal security measures.
Storage virtualization is the layer of abstraction software between physical storage devices and applications. It allows for a more flexible and efficient storage resource usage by cutting down on the need for redundancy in hardware, easing data transfers, and streamlining complex management functions like snapshots and replicas. It can also cut costs by eliminating the need to anticipate the future storage requirements and to pay for all the necessary capacity upfront, or to purchase and maintain multiple devices to support expansion.
The most widely used type of storage that is virtualized is the network-based virtualization. It presents a pool of storage to servers and applications via the network, such as disks within 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 safeguard data in the case that a single drive fails. However, the exact physical location of the disk and the individual hardware are hidden from the applications and users.
Storage virtualization through arrays is the next step. A storage controller can be used to consolidate storage from multiple arrays into a single pool and present it to applications. This allows businesses to use storage tiers at lower costs that could include hard disk drives and solid-state drives with various capacities. They can also conceal the physical location from users and servers.
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