< All CompTIA Cloud+ Notes

tsirhCdneM | CompTIA Cloud+ | Module 1

By: Raul Pop | Related Course: CompTIA Cloud+ | Published: June 3, 2017 | Modified: June 3, 2017
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NotepadNetwork Storage Types/Configuration

Unit Overview

Network and Direct Storage Types

Accesses and Protocols

Storage Preparation and Accessing

 

Network and Direct Storage Types

 

1)Network Attached Storage(NAS)

2)Storage Area Network(SAN)

3)Direct Attached Storage(DAS)

 

Network Attached Storage

-Server attached to the network,Fileserver

-Cheaper storage than SAN

-Able to implement with current infrastructure

-Offers shared storage over the network

-Is the lowest performance

 

Storage Area Network

-Shared storage access over the LAN

-Expensive and requires special training

HBA-Host Bus Adapter

Switches

Vendor specific hardware and software

-Configuration takes time stetting up

-Highest performance

-Block-level allocation

 

Direct Attached Storage

-Directly attached to Local PCs

-Used by laptops,desktop and some servers

-Protocols

Integrated Device Electronics(IDE)

SATA

SCSI

-Not part design mostly because they are directly attached to the PC

 

Accesses and Protocols

1)Ethernet

2)Fiber Channel(FC)

3)Internet Protocol(IP)

4)Internet Small Computer System Interface(iSCSI)

5)Fiber Channel Protocol

6)Fiber Channel over Ethernet(FCoE)

 

Ethernet

-Most comely used in networks

-Cheap and easy to implement

-Not as fast as FC

-Limited in distance

-Able to use 10 Gbps Ethernet to it potential

-Requires a wiring scheme(T568A and T568B)

 

Fiber Channel

-Common in 10 Gbps

-Common in WANs

-Connects Servers to Storage

-Topologies

Point to point

Arbitrated Loop

Switched Fabric

-Used with Long Distance

 

Internet Protocol

-Operates at the Internet layer of the TCP/IP model

-Provides traffic routing

-Connection less unacknowledged protocol

-Used Doted decimal notation or hexadecimal

-IPv4 192.168.100.1

-IPv6 FE80:0000:0000:0000:0202:B3FF:FE1E:8329

 

Internet Small Computer System Interface

-Sends packets via SCSI commands through IP networks

 

Fiber Channel Protocol

-Rides over Fiber Channel

-Transmits SCSI Commands

-Utilizes Hardware to transmit packets

-Protocol Offload Engines(POE)

 

Fiber Channel over Ethernet

-Uses Ethernet instead of Fiber Channel

-Used to transmits SCSI Commands

-Cheaper than Fiber

-Used 10 Gbps Ethernet

 

Storage Preparation and Accessing

-Network Shares

-Multipathing

-Logical Unit Numbers(LUNs)

-Zoning and LUN Masking

 

Network Shares

-Resources available across the LAN

-Appear on a local machine as a driver

-With Microsoft OSs SMB Protocol

-With Linux OSs NFS protocol

 

Multipathing

-Fault tolerant

-Creates multiple paths

-Uses NICs or HBAs

-Multiple means of getting resources

-Multiple NICs for connectivity or HBAs from a PC

 

Logical Unit Numbers

-Operate as unique identifiers

-Represent a virtual hard disk from a block of allocated storage within a NAS or SAN

-Devices that request information are called initiators

-Device that performs the request is called a target

 

Zoning and LUN Masking

-Zoning lets you isolate a single server to a group of storage devices or a single storage device

-Zoning is implemented at the hardware level

-LUN masking allows a LUN to be available to some hosts and unavailable to other hosts

-LUN masking provides more detailed security than zoning

 

Chapter Summary

-Discussed Network and Direct Storage Types

-Discussed Accesses and Protocols

-Discussed Storage Preparation and Accessing


< All CompTIA Cloud+ Notes
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