Increase the capacity of network attached storage by adding more hard disks, rather than upgrading or replacing existing serversįormat network attached storage to support replicated disks, a redundant array of independent disks, or erasure coding to ensure data integrity Used for unstructured data, such as multimedia files, surveillance video, and medical imagesīusiness Uses for Network Attached Storage Used for structured workloads, such as databases and data warehouses Requires dedicated Fibre Channel connections for clients, servers, and storage, and often a separate, dedicated Ethernet network for file request traffic High-level file sharing protocols-SMB/CIFS, NFS, SFTP, and WebDAVĪ centralized place to back up or sync files Low-level file sharing protocols-Fibre Channel, iSCSI, and FCoE Variable scalability-lower-end is not highly scalable high-end can scale to petabytes using clusters or scale-out nodes Highly scalable-add more storage controllers or expanded storage arrays, allowing SAN admins to scale performance, storage, or both Variable speed that is dependent on local TCP/IP Ethernet network, which is most commonly 1GbE to 10GbE, but can be impacted by the number of users accessing the storage at the same time High-speed-uses Fibre Channel, most commonly available in 16 Gb/s to 32 Gb/s Storage Area Network (SAN)ĭata stored and accessed in the form of filesĬommonly used in professional and enterprise environmentsĬommonly used in homes and small to medium-sized businessesĭata accessed as if it were a local hard driveĭata accessed as if it were a network-attached drive Since SAN works on a separate network, it works similarly to the direct attached storage (DAS). Multiple servers can access shared storage with a SAN, as if it were a directly-attached drive. Very accessible with network connectivityĪ storage area network (SAN) is a specialized, independent high-speed network that connects authorized users and servers and provides access to shared pools of storage devices. Highly scalable-scale up by adding additional drives or scale-out by using clusters and adding nodes Limited scalability-restricted by the number of internal drive bays, the capacity of external devices, and the availability of external ports on individual devices ![]() Less expensive than network attached storage Less complex than network attached storage TCP/IP, Ethernet used for data transmission More expensive-requires hardware and software to run and manage the storage systemĭifficult to share storage with multiple usersĮasy to share storage with multiple usersĭoes not allow files to be shared across different operating systemsĪllows files to be shared across different operating systems ![]() Examples of DAS include:Ĭomparatively inexpensive-only costs are those associated with the disk drives and any drive enclosures (requires no additional hardware or software to run and manage) It can also be a single computer’s hard drive or a cable-connected external hard drive. Make Data Safe and Accessible Network Attached Storage or Other Optionsĭirect attached storage (DAS), the precursor to network attached storage, is a hard disk drive (HDD) or solid-state drive (SSD) that is connected to a single computer, with each device managed separately. ![]()
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