Transcript iSCSI SIG - My First SAN v020310ggjb v5

DAS to SAN -iSCSI Offers a
Compelling Solution
PRESENTATION TITLE GOES HERE
Presented by:
Jason Blosil, NetApp
and
Gary Gumanow, Dell
Ethernet Storage Forum
Members
The SNIA Ethernet Storage Forum (ESF) focuses on educating end-users
about Ethernet-connected storage networking technologies.
Compellent
Dell
EMC
HP
Intel
Juniper Networks
Microsoft
NetApp
Panasas
Sun
2
Webcast Presenter
Jason has over 13 years of Finance and Marketing experience with
manufacturing and technology firms. For the last 9 years, he has worked
in product management and product marketing for companies within the
data storage industry. His expertise includes server based storage and
Jason Blosil
Product Marketing, NetApp
RAID, as well as external storage solutions. Jason currently works for
NetApp in Product Marketing, specializing in iSCSI based solutions.
Gary Gumanow has over 25 years of experience in IT management,
systems integration, product management, and strategic product planning.
Gary is currently responsible for product marketing of Dell’s EqualLogic
storage arrays. Prior to Dell he spent ten years at Intel where he brought
over 20 Ethernet products to market. Gary holds two patents and has
Gary Gumanow
Product Line Manager, Dell
authored many papers on networking and server platform architecture.
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Today’s Webinar
What we’ll cover today…
Describe characteristics and components of Direct Attached Storage
(DAS) vs Storage Area Networks (SAN) and why iSCSI SANs are an
ideal first step to greater data center efficiency through Ethernet
based SANs
You are an…
IT managers looking to deploy SANs for the first time
IT managers rethinking their existing SAN infrastructure in favor of IP
SAN
We hope you enjoy this webinar
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Future Events
Two upcoming iSCSI SIG webinars:
March 3rd – Optimized Storage Environments
April 7th - Disaster Recovery/Cloud/Backup
Storage Networking World – Spring 2010 Orlando
Sign up for these tutorials when attending:
iSCSI SANs - Ideal Applications, Large and Small
iSCSI - A lossless Ethernet Fabric with DCB
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Agenda
Characteristics & Limitations of DAS
Characteristics & Benefits of SANs
Why iSCSI for SANs
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Buying Storage with DAS
Storage purchase includes server
hardware with disk capacity
Capacity requirement is a guess –
so is the right server
Typical use is for a single
application
As capacity requirements
increase, so do the number of
servers
“I need more
storage...
…I’ll buy
another server.”
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Server Components
Motherboard
Disk drive
Network interface
RAID controller
I/O cable
Fan *
Power supply *
Single Points of Failure
* Commonly redundant in high-end server platforms
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DAS Options - JBOD
Advantages
Greater expandability / higher
density storage
Redundant components at
the JBOD
Possible server cluster &
failover
Disadvantages
Server clustering is
complicated
Server & I/O path still not
redundant
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Additional Challenges with DAS
VM1 VM2
Limited capacity in server
chassis
Storage inefficiency - islands
Software / firmware updates
Backup and restore
Site to site failover
Limited server virtualization
capabilities
VM2
Tape Drive
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VOTE #1 – DAS USAGE
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Storage Comparison
DAS
Application
Server
NAS
Application
Server
SAN
Application
Server
File System
Application
Server
Application
Server
File System
File System
RAID
File System
RAID
RAID
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SAN Storage Components
Storage network
adapters
SAN switch
Storage system
Controller
1
PS1
Controller
2
PS2
PS3
Passive
Midplane
Redundant controllers
Redundant hot-swap
power & cooling units
Expandable I/O ports
Integrated disk bays or
separate disk shelf
(JBOD)
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What SANs Deliver
Value of Storage Area
Networks
Improved reliability and
reduced cost of backup
Improved scalability of
storage capacity and
performance
Simplified storage
provisioning
Improved data
availability
Top reasons for deploying a
SAN
Back-up
Storage consolidation
Server virtualization
Satisfy demands for
additional capacity
Performance
Disaster recovery
New project or
application deployment
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SAN Benefits - Reliability
Redundant components
No single point of failure
RAID and redundancy
More spindles with SAN
Redundant RAID and cables
Backup and recovery is
universal
Multi-pathing (MPIO)
Fault-tolerance
Load balancing
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SAN Benefits - Serviceability
Modular design
Hot swap of components
Software updates are nondisruptive
Redundant data paths
across network
CLR 1
PS1
CLR 2
PS2
PS3
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SAN Benefits – Resource Mobility
Virtual Machines (VMs)
stored as files
Hypervisors aware of VMs
on other servers
Permit movement of VM for
load balancing or server to
server and site failover
VM1 VM2
Hypervisor
VM2 VM3
Hypervisor
1
2
3
VM Files 17
SAN Benefits - NetBoot
Network drive appears to
server as a local drive
Benefits:
Boot
Volumes
No special purpose hardware
Broad OS support
Lowers server costs
Boot volumes protected
Improved performance
Simplified OS updates /
management
Improved disk efficiency
Easy to scale
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Network Boot w/ Rapid Cloning
LUN cloning reduces
capacity required for
common boot images
Master boot image is
replicated with space
efficient copies
Clones created in
seconds/minutes
Benefits:
Cloned
Master Boot LUNs
Boot LUN
Reduced storage capacity
requirements
Rapid server deployment
Rapid server scaling and
redeployment
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SAN Benefits – Backup and
Restore
Reduce complexity and
increase efficiency
Important in virtual
server environments
Single point backup
Reduces network
congestion to host
Tape Drive
SAN Storage
Snapshot and disk to
disk replication
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SAN Benefits – Performance &
Scalability
Service multiple applications
with single storage pool
More spindles for better
IOP performance
High performance networks
with multiple paths
Port bonding for IP traffic –
increase overall bandwidth
Easily add capacity online
Capacity allocation and
resizing of LUNs in
increments less than a drive
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VOTE #2 – SAN OBSTACLES
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Perceived Obstacles to
Deploying SANs
Complexity
Difficult to setup and configure
Footprint
SANs can require more equipment
Management
Requires high touch administration
Cost
All of that redundancy comes with a price
iSCSI Simplifies the Environment
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iSCSI SAN Reduces Complexity
DAS
VM1 VM2
iSCSI SAN
VM2
VM1 VM2
VM2
Tape Drive
Tape Drive
iSCSI Storage
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Setup - DAS vs iSCSI SAN
DAS
Install RAID Driver
Install RAID management
software (optional)
Create volume
Format volume
iSCSI SAN
Install iSCSI Driver
Install storage management
software (optional)
Create LUN on storage
Map drive letter to storage
LUN IP address
Format LUN
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iSCSI OS Network Boot
Support
OS
Initiator
Boot
Microsoft
Native S/W,
3rd Party HBA
HBA, S/W
Red Hat
Native S/W,
3rd Party HBA
HBA, S/W
Oracle
Native S/W,
3rd Party HBA
HBA, S/W
SUSE
Native S/W,
3rd Party HBA
HBA, S/W
Native S/W,
Native HBA
HBA, S/W
Native S/W,
3rd Party HBA
HBA
Native S/W
No
Native S/W,
3rd Party HBA
HBA
Native S/W
No
IBM (AIX)
Sun (Solaris)
HP (HPUX)
VMware
Novell (Netware)
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iSCSI Performance Options
Software Initiator + Standard NIC
Software initiator runs on host CPU
Low cost (Free download)
May offer highest performance, but highest CPU overhead
About 85% of iSCSI deployments
TCP/IP Offload Adapter
Lower host CPU overhead
Added cost for adapter, but uses OS iSCSI initiator
iSCSI HBA
CPU overhead similar to FC adapter
Highest cost solution
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DAS vs SAN – Cost Compare
(6TB capacity)
Storage Server - $8,000 est. (tower) / $13,000 est. (rack)
2 Intel Xeon Processors / 8GB memory each
Redundant power supplies
RAID Controller / cables / disks
Network Adapter (4 port)
Microsoft Server 2003 / Symantec backup
JBOD - $7,000 est.
Redundant power
Disks
iSCSI Storage System - $13,000 est.
Redundant controllers & power
Disks
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Why IP SAN (iSCSI)?
Mature standard (2004)
Looks like a local SCSI disk
Leverages IP Expertise
Economies of scale
IP SAN
Scalability / Performance
Improved TCO vs DAS
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VOTE #3 – ISCSI USAGE
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Questions & Answers
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To download this Webcast
after the presentation, go to
http://www.snia.org/about/socialmedia/
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Ethernet Storage Forum
Members
The SNIA Ethernet Storage Forum (ESF) focuses on educating end-users
about Ethernet-connected storage networking technologies.
Compellent
Dell
EMC
HP
Intel
Juniper Networks
Microsoft
NetApp
Panasas
Sun
33