NAS (Network Attached Storage) is a file server that is connected across computer network that can store large amount of data. Most of the corporate environment people and home users prefer to use NAS devices as it becomes easy to share files across multiple users. Previously, file servers are used for connecting computer networks. Because of the advantages like simple configuration, fast data access, easy administration has raised its usage instead of file servers. NAS head that is front of a disk array manage data storage transactions. A mapping function relates volumes, sectors and blocks to files in file oriented storage systems like NAS. When you remove the storage device from NAS server, only NAS head is left. NAS head maintains a file oriented operating system that can manage applications on partitions and RAID. This can also manage the I/O functions that can send and receive data using commands. However, this NAS head is not capable of performing basic storage operations. Most of the NAS servers have in built security system that limits accessing files to authorized people only. Most work with existing network operating system to which they are compatible with and OS takes decision regarding who can access files.
Hard drive failure, accidental reconfiguration of RAID drives, disk component failures, virus infection etc leads to data loss on servers. Using a worth tool that can undelete nas files is apt in this situation.
Usually NAS systems contain one or more hard drives arranged in logical RAID arrays. Using RAID (Redundant Array of Independent Disks) arrays increases the drive speed with striping. This Striping writes alternate portions of data on multiple drives so that more data can be read and written at once. This is the reason how striping increases the speed on drives. RAID arrays can protect the data in two ways i.e, mirroring and parity. Mirroring write the same data on multiple drives so that even if one drive gets damaged, other drive can be used. The second drive that has the exact duplicate of the data can be used in case of single drive failure. Parity operation uses three drives for data protection. The first two drives used for striping data and the third drive keeps a record of the data stored on the first two drives.
Lost data cannot be recovered without using a data recovery tool. So, it is better to avoid data loss at starting stage itself. Taking backup, using regularly updated antivirus, using UPS to overcome power surge problems are some of the preventive measures to avoid data loss to some extent.
Remo Recover (Windows) Basic edition is best data retrieval software that recovers your deleted or lost nas files easily. This utility is capable of recovering lost files that are lost due to RAID array failure, multiple drive failure etc. This tool has ability to identify and recover various file types based on their unique signature. When you download demo version of the tool, you can preview data before saving it to system.