Summary: Difference Between SAN and NAS is that storage area network (SAN) is a high-speed network with the sole purpose of providing storage to other servers to which it is attached. While network attached storage (NAS) device is a server connected to a network with the sole purpose of providing storage.
SAN
A storage area network (SAN) is a high-speed network with the sole purpose of providing storage to other servers to which it is attached. A storage area network is a network that includes only storage devices. High-speed fiber-optic cable connects other networks and servers to the storage area network, so the networks and servers have fast access to large storage capacities.
NAS
A network attached storage (NAS) device is a server connected to a network with the sole purpose of providing storage. Any user or device connected to the network can access files on the NAS device. These devices often use a RAID configuration. In the past, enterprises were the primary users of NAS. With the introduction of smaller, less expensive NAS devices, however, some home and small business users opt to add up to 6 TB or more of hard disk storage space to their network with a NAS device.
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is the physical material on which a computer keeps information, data, programs, and applications
keeps information on servers on the internet, and the actual media on which the files are stored are transparent to the user
is the hardware that records and/or retrieves items to and from storage media
the process of transferring items from a storage medium into memory
the process of transferring items from memory to a storage medium
the number of bytes a storage medium can hold
Cam items on a storage medium remain intact even when you turn off a computer or mobile device?
- the amount of time it takes a storage device to locate an item on a storage medium
-the time required to deliver an item from memory to the processor
hard disk drive (HDD)
contains one or more inflexible, circular patterns that use magnetic particles to store data, instructions, and information
storage capacity of hard disks
varies and is determined by:
- the number of platter the hard disk contains
- whether the disk uses longitudinal or perpendicular recording
- density
the process of dividing the disk into tracks and sectors
characteristics of a hard disk include:
tracks, sectors, platters, form factor, read/write head, revolutions per minute (how fast the platter spins)
Solid disk drive
is a flash memory storage device that contains its own processor to manage its storage
Has several advantages: faster transfer, more durable, less power needed, less heat generation, longer life
is a separate freestanding storage device that connects with a cable to a USB port or other port on a computer or mobile device
occurs when a read/write head touches the surface of a platter
always keep a backup of your hard disk
redundant array of independent disks
is a group of two or more disks or SSDs
disk mirroring
is a removable flash memory storage device that you insert and remove from a slot in a computer, mobile device, or card reader/writer
SDHC, CF, miniSD, M2, microSDHC
plug into a USB port on a computer or mobile device
is an internet service that provides storage to a computer or mobile device users
consists of a flat, round, portable disk made of metal, plastic, and lacquer that is written and read by a laser
commonly
store items in a single track that spirals from the center of the disk to the edge of the disc
track is divided into evenly sized sectors
can be read from but not written to
is an optical disc on which users can write once, but not erase
is an erasable multisession disc
is a high-capacity optical disc on which users can read but not write on or erase
are competing DVD-recordable WORM formats, on which users can write once but not erase
are competing DVD-rewritable formats that users can write on multiple times
allows large organizations to manage and store data and information using devices intended for heavy use, maximum availability
NAS
is a server that is placed on a network with the sole purpose of providing storage to users, computers, and devices attached to the network
SAN
a high-speed network with the sole purpose of providing storage to other attached servers
is a magnetically coated ribbon of plastic capable of storing large amounts of data and information
reads and writes data and information on a magnetic tape
has a magnetic stripe that contains information
stores data on an integrated circuit embedded in the card
consists of an antenna and a memory chip that contains the information to be transmitted via radio waves
reads the radio signal ad transfers the information to a computer or computing device
contains a chip and an antenna that contains information to be transmitted
most are self-adhesive
Is a server that is placed on a network with the sole purpose of providing storage to users computers and devices attached to the network?
Is a flash memory storage device that contains its own processor to manage its storage?
Is the physical material on which a computer keeps data information programs and applications?
What is the number of bytes a storage medium can hold?
Term ______ is the number of bytes (characters) a storage medium can hold. | Definition Capacity |
Term Continuous data protection is widely used by home and small business users. | Definition false |
Term The simplest RAID storage design writes data on two drives at the same time and is called ______. | Definition mirroring |