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ATA, SATA, SCSI, NAS and SAN : How to Choose the Right Storage Technology

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Network Attached Storage (NAS) Storage Area Network (SAN) Storage Solutions NAS Network Attached Storage iSCSI IP SAN Ethernet Storage Solutions NAS iSCSI & IP SAN ... – PowerPoint PPT presentation

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Title: ATA, SATA, SCSI, NAS and SAN : How to Choose the Right Storage Technology


1
ATA, SATA, SCSI, NAS and SAN How to Choose the
Right Storage Technology
  • Craig Thornton
  • President, Cnetics Technologies

2
What does your information look like and how do
you look at it?
3
Agenda
1. Show Up and Throw Up
2. Technology
3. Storage Solutions
4. Business Solutions
4
Technology
  • Interfaces
  • ATA
  • IDE EIDE SATA
  • SCSI
  • SE FWD Ultra SAS
  • Fibre FATA

5
Interface Specs
Seek Time Duty Cycle MTBF Application RPM
SATA 9.5ms 8hrs/day 5days/week 600,000 _at_desktop workloads Low Availability, sequential reads 7200
SAS 3.6ms 24hrs/day, 7days/week 1,200,000 _at_ Enterprise Work Loads On-Line, High Availability, random reads 15000
6
Specs
SATA SAS FC arbitrated loop
Performance Half Duplex Full Duplex Full Duplex
Performance 3Gb/s 3Gb/s - 6Gb/s 4Gb/s
Connectivity 1.5 m internal gt8 m external 6 m internal external cable 15 m cable
Connectivity One device (fan out devices) 128 devices (16384 max) 127 devices
Connectivity No Peer to Peer Peer-to-Peer Peer-to-Peer
Availability Single port HDD Dual-port HDD Dual-port HDD
Availability Single-host Multi-initiator Multi-initiator
Driver Model Software Transparent with Parallel ATA Software Transparent with Parallel SCSI Software Transparent with Parallel SCSI
7
Defining the Problem
  • The right answer to the wrong problem is very
    difficult to fix.
  • Capacity
  • Performance
  • Reliability
  • Manageability
  • Cost
  • On-line, Offline, Near-line
  • Storage or Server Consolidation Virtualization

8
Storage Segments
1. Network Storage
2. Server Storage - OLTP
3. High Density
4. Nearline
5. Low Cost Server
6. PC Commercial
7. PC Consumer
8. Notebook
9. DVR
10. Gaming / Audio / Video
11. Handheld
9
Technology
SATA
Non HDD Intensive
Non Mission Critical
Upgrade To SAS When nec.
Lowest Acquisition /GB
10
Technology
SAS
HDD Intensive Applications
Mission Critical Servers
SATA Compatible
Ultimate Configuration Flexibility
11
SAS Protocols
SMP
SSP
STP
Serial Management Protocol
Serial SCSI Protocol
Serial Tunneling Protocol
12
Storage Solutions
  • Types
  • Just a Bunch Of Disks (JBOD)
  • Redundant Array of Inexpensive Disks (RAID)
  • 0,1 0/1, 3, 5 etc
  • Network Attached Storage (NAS)
  • Storage Area Network (SAN)

13
Storage Solutions NAS
  • Network Attached Storage
  • iSCSI
  • IP SAN
  • Ethernet

14
Storage Solutions NAS
  • iSCSI IP SAN
  • Enterprise File Services Clustered Gateway
  • WAN Accelerators

Location of data may be anywhere on the LAN or WAN
15
Storage Solutions SAN
  • Fibre Channel
  • Storage Area Network
  • 1Gb/s, 2Gb/s, 4Gb/s, 10Gb/s
  • Manageable, Secure
  • Logic is in the Fabric

16
Storage Solutions NAS/SAN Fusion
  • Multi-Protocol Routing
  • FC-FC Subnet Routing Service for SAN island
    consolidation
  • FCIP Tunneling Service for SAN extension over
    distance
  • iSCSI Gateway Service for sharing Fibre Channel
    storage with servers on IP network

17
Storage Solutions Moment of Truth
  • NAS or SAN ?

18
Business Solutions
  • Drivers for Business Solutions
  • Regulatory
  • Sarbanes-Oxley
  • HIPPA Compliance
  • CISP
  • Security
  • Confidentiality
  • Integrity
  • Availability Backup Recovery
  • Revenue
  • Performance
  • High Availability

19
Business Solutions -ILM
  • Information Lifecycle Management
  • Continuity
  • Data Management
  • Controlling Costs
  • Compliance
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