Using SANS or NAS? (Relevant Literature).Understanding the distinction between storage area networks and network attached storage is a challenge at best, unnecessarily exacerbated by the use of terms that are palindromes: SANs and NAS (1) See network access server. (2) (Network Attached Storage) A specialized file server that connects to the network. A NAS device contains a slimmed-down operating system and a file system and processes only I/O requests by supporting the popular . Added to the difficulty of remembering which technology is which, network and storage administrators need to sort through the comparative strengths and limitations of each technology to decide which is appropriate for their network. In `Using SANs and NASI (1) (NetWare Asynchronous Service Interface) A protocol from Novell for connecting to modems in a communications server. It was derived from the NCSI protocol. NASI provides more advanced features than the common int 14 (interrupt 14) method. , author W. Curtis Preston:;distinguishes between the two technologies and provides the information that storage administrators will need, not only to make the right choices, but to actually build the data centre that meets their requirements for size, speed, and reliability. Comment: Modern data centers have extremely demanding requirements. Multi-terabyte data stores are common and petabyte One quadrillion bytes (one trillion kilobytes). Also PB, Pbyte and P-byte. See peta, binary values and space/time. (unit) petabyte - 2^50 = 1,125,899,906,842,624 bytes = 1024 terabytes or roughly 10^15 bytes. 1024 petabytes is one exabyte. data stores are not unheard of Not heard of; of which there are no tidings. Unknown to fame; obscure. - Glanvill. See also: Unheard Unheard . Given these massive quantities of data, storage administrators are challenged with ensuring that their data is always available, that access times and throughput are reasonable, and that the data can be backed up and restored in a timely manner. Storage area networks, or SANS, and network attached storage, or NAS, are two different approaches to solving these challenges. "Using SANs and NAS" is a practical book that gives storage administrators the tools and understanding they need to maximize their investment in SANs or NAS, or a combination of the two. Beginning with an overview of SAN and NAS architecture, the book covers the daily management of SANs and NAS, with a special emphasis on backup and recovery. A vendor-neutral approach makes the information applicable for a wide range of administrators as they navigate (1) "Surfing the Web." To move from page to page on the Web. (2) To move through the menu structure in a software application. the market of competing SAN and NAS products. "Using SANs and NAS' also covers technologies such as RAID and other forms of monitoring that complement the data center. Also, with an eye on the future, the author explores other technologies, such as ISCSI and DAFS (Direct Access File System) A high-performance file sharing protocol based on the VI memory-to-memory architecture. Designed for storage area networks (SANs), DAFS provides bulk data transfer directly between the application buffers of two machines without , that might affect the architecture and management of the data center. ISBN ISBN abbr. International Standard Book Number ISBN International Standard Book Number ISBN n abbr (= International Standard Book Number) → ISBN m 0-596-00153-3 www.oreilly.com |
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