Transcript 3.2 Storage Services

CompTIA Server+ Certification
(Exam SK0-004)
3.2 Storage Services
This courseware is copyrighted © 2016 gtslearning. No part of this courseware or any training material supplied by gtslearning International Limited to accompany
the courseware may be copied, photocopied, reproduced, or re-used in any form or by any means without permission in writing from a director of gtslearning
International Limited. Violation of these laws will lead to prosecution. All trademarks, service marks, products, or services are trademarks or registered trademarks
of their respective holders and are acknowledged by the publisher.
All gtslearning products are supplied on the basis of a single copy of a course per student. Additional resources that may be made available from gtslearning may
only be used in conjunction with courses sold by gtslearning. No material changes to these resources are permitted without express written permission by a director
of gtslearning. These resources may not be used in conjunction with content from any other supplier.
If you suspect that this course has been copied or distributed illegally, please telephone or email gtslearning.
Objectives
• Understand the use of
NAS and SAN to provide
network storage
solutions
• Identify the principal
components of Fibre
Channel
• Understand the
principles of storage
capacity planning
3.2 Storage Services
189
Direct Attached Storage (DAS)
3.2 Storage Services
189
Network Attached Storage (NAS)
3.2 Storage Services
190
Storage Area Network (SAN)
3.2 Storage Services
191
Fibre Channel (1)
• Transfer rates
o
1GFC (1 Gbps), 2GFC, 4GFC, 8GFC, and 16GFC
o
10GFC and 20GFC
• Initiator (host server)
• Target (device port)
o
LUN (Logical Unit Number)
o
WWN (World Wide Name)
o
WWPM (Word Wide Port Name)
• Fibre Channel Switch / Director
3.2 Storage Services
192
Fibre Channel (2)
• Fibre Channel over IP (FCIP)
o
Remote link over WAN interfaces for interconnecting SANs
o
Not high performance
• Internet SCSI (iSCSI)
o
Deploy over ordinary Ethernet
o
Alternative to Fibre Channel hardware
• Fibre Channel over Ethernet (FCoE)
o
Mixed Ethernet / FC environment
o
Converged Network Adapters (CAN)
• Jumbo Frames
3.2 Storage Services
192
Fibre Channel Security Issues
• LUN Masking
o
Access control based on WWN or WWPN
• Zoning
• Fibre Channel Security Protocols (FC-SP)
o
Diffie-Hellman Challenge Handshake Authentication Protocol
(DH-CHAP)
o
Fibre Channel Authentication Protocol (FCAP)
o
Encapsulating Security Protocol (ESP)
3.2 Storage Services
194
Tape Drives
• Tape drive types
o
Quarter-Inch Cartridge (QIC)
o
Travan
o
o
o
Digital Audio Tape (DAT) /
Digital Data Storage (DDS)
8mm / Advanced Intelligent
Tape (AIT)
Digital Linear Tape (DLT) /
Linear Tape-Open (LTO) /
Ultrium
• Tape libraries /
autoloaders
• Maintenance
3.2 Storage Services
195
Other Media
• Optical and WORM
o
CD/DVD recordable
o
CD / DVD Rewritable
• Optical jukebox
• Flash media
• Just a Bunch of Disks
(JBOD)
3.2 Storage Services
Disc
CD-R
CD-RW
DVD±R
Type
Capacity
WORM
700 MB
Rewritable 700 MB
WORM
4.7 GB single layer
8.5 GB dual layer / single sided
9.4 GB single layer / double
sided
17.1 GB dual layer / double
sided
DVD±RW Rewritable 4.7 GB single layer
8.5 GB dual layer
BD-R
WORM
25 GB
BD-R XL WORM
100 GB triple layer
128 GB quad layer
BD-RE
Rewritable 25 GB
197
Storage Capacity Planning
• Server / appliance OS growth
• Application
o
Database records
o
User-generated content
• File server
• Temporary files
• Logs
• Backup / archive
3.2 Storage Services
199
Disk Size Calculation
• Bytes (8 bits)
o
300,000,000,000 bytes is always 300,000,000,000 bytes but multiples vary
o
Base 10 measurements
− 300,000,000 kilobytes (KB)
− 300,000 megabytes (MB)
− 300 gigabytes (GB)
o
Base 2 measurements
− 292,968,750 kibibytes (KiB)
− 286102 mebibytes (MiB)
− 279.379 gibibytes (GiB)
• Understand which unit is being used in context
o
Windows uses base 2 calculations with base 10 labels
o
Some Linux versions use SI labels
o
OS X may use base 10 calculations
o
Storage vendors always use base 10 calculations
3.2 Storage Services
200
Disk Quotas and Compression
3.2 Storage Services
200
Review
• Understand the use of NAS
and SAN to provide
network storage solutions
• Identify the principal
components of Fibre
Channel
• Understand the principles
of storage capacity
planning
3.2 Storage Services
202