1. Ryan Leonard Storage and Solutions Architect
IBM DS3000 Overview
Ryan Leonard
Storage and Solutions Architect

2. Agenda
Interface options
DS3000

3. Interface Options
Serial attached SCSI (SAS)
iSCSI
Fibre Channel (FC)

4. SAS Basics and Benefits
SAS – Serial Attached SCSI
A serial communication protocol designed for transfer of SCSI commands and data to and from devices over point-to-point interconnections 
Key Benefits
New roadmap with industry-wide acceptance
Significant performance enhancements
3-Gbps SAS x4 “wide” ports
Cost equivalent to parallel SCSI
Freedom from 15 drive maximum per SCSI channel

5. SAS Special Considerations
Distance limitations – 8 meters per discreet connection
Perceived complexity based on the newness of the technology
SAS expanders, which will support SAN-like capabilities for SAS, are still in development
Limited to the number of servers that can be attached – based on the number of SAS host ports on the storage system

6. iSCSI Basics and Benefits
iSCSI - internet Small Computer System Interface
A network protocol that enables transmission of SCSI commands and data over an IP-based network usually via an Ethernet interface
Key Benefits:
Low cost
Less complexity
Extensive knowledge base – expertise in every IT organization
Flexible configuration topologies
Extensive reach with no distance limitations
Future performance
1Gb/s today with roadmap for 10Gb/s and beyond

7. iSCSI Special Considerations
Network congestion risks the dropping of frames – important to evaluate configuration to foresee any bottlenecks
Achievable performance is misunderstood
Hardware and connection parameters can be leveraged to achieve desired performance
Security at risk when sharing IP storage networks with the existing network
Separate storage traffic from normal LAN traffic
Disparate expertise and confusion over storage and networking IT roles

8. FC Basics and Benefits FC – Fibre Channel
A serial networking interface that supports the transmission of upper level protocols – including SCSI command sets and data – over fiber optic or copper cables
Key Benefits
Scalable – supports up to 16 million addresses.
Distance – 10,000 meters maximum cabling length
High bandwidth – low latency and high IOPs
Investment protection – auto-negotiating link speeds allowing for seamless integration into an existing 1Gb/s or 2 Gb/s environment
Congestion free with credit-based flow control delivering data as fast as the destination buffer is able to receive it.

9. FC Special Considerations
Steep learning curve for administrators unfamiliar with deployment and management
Expensive and complex
Costly FC SAN equipment and maintenance
Training personnel internally or hiring a service company is a significant addition to TCO
Low-cost servers will typically not be included as the investment to attach it can outweigh the cost of the server itself – does not always make financial sense to deploy

10. To simplify…
Pick 2…
Performance FC
SAS
Scalability
Cost
iSCSI

11. IBM Storage Product Lines
This table represents general positioning and not technical capabilities
DS4700
DS3200
EXP3000
DS3300
DS3400
DS4800
DS5100
DS5300
Increasing performance and functionality
Entry-level
SMB
Remote office
Department
Data Center
SAS connectivity with Mega RAID and ServeRAID 8S SAS adapters
Internal DAS solution
Enhanced RAID functionality
Comprehensive software
SAS | iSCSI connectivity
Shared DAS
Simple management
Snapshot replication
First external RAID
FC connectivity
Entry-level SANs
FlashCopy replication
Homogeneous SANs
Configuration flexibility
Robust management
Data replication
Heterogeneous SANs
Highest performance
Extensive configuration flexibility and data replication services

12. DS3000 Series IBM System Storage DS3200 SAS disk system
iSCSI disk system
IBM System Storage DS3400
Fibre disk system

13. DS3000 Series Characteristics
Simple to install and manage by using DS3000 Storage Manager
Robust and reliable
Scalable by using the low-cost EXP3000s
Flexible solutions for System x, BladeCenter, and System p servers
Affordable with exceptional value

14. DS3200, DS3300, DS3400 Introduction IBM System Storage DS3200
Direct-attach configuration
3-Gbps SAS connection to a host
Solution for System x and BladeCenter servers
IBM System Storage DS3300
IP SAN-attach configurations
1Gbs iSCSI connection to an IP switch
IBM System Storage DS3400
Direct or FC SAN-attach configurations
4-Gbps FC with auto-negotiating for 1-Gbps or 2-Gbps networks
Solution for System x, BladeCenter, and System p servers

15. DS3000 Enclosures DS3200, DS3300, DS3400 EXP3000 SAS / SATA drives
Controllers
ESMs
Power/cooling
Power/cooling

16. DS3000 Specifications Comparison
Dual-controller system (unless noted)
D S
D S
D S
Host channels
6 / 2 4
Native host interface link speed
3 Gbps SAS
1 Gbps iSCSI
4 Gbps FC
Redundant drive channels
Two 3 Gb/s SAS
Max drives 48
Drives supported
SAS
Processor
Intel xScale 667 MHz
Processor memory (single controller)
144 MB
XOR engine
Integrated
Dedicated data cache per dual-controller system
2 GB / 1 GB (288 MB for memory)
2 / 1 GB (288 MB for memory)

17. DS3000 Performance
D S
D S
D S
Burst I/O rate – cache reads
90,000 IOPS
64,000 IOPS
114,000 IOPS
Sustained I/O rate – disk reads
22,000 IOPS
Sustained I/O rate – disk writes
4,500 IOPS
4,200 IOPS
4,600 IOPS
Burst throughput – cache read
1,450 MB/s
455 MB/s
1,600 MB/s
Sustained throughput – disk read
900 MB/s
380 MB/s
925 MB/s
Sustained throughput – disk write
690 MB/s
300 MB/s
720 MB/s
Note: Results achieved under ideal circumstances in a benchmark test environment. Actual customer results will vary based on configuration and infrastructure components. Performance numbers based on internal testing by LSI.

18. DS3000 Storage Manager
Functions use a step-by-step wizard navigation scheme
Supports RAID levels 0, 1, 3, 5, 6 and 10
Recovery Guru and diagnostic alerts
Automatic I/O path failover
Online administration
Logical drive creation
Capacity expansion, configuration and LUN access
Firmware updates
Automatic or manual Hot Spare configuration
Maximum of 256 logical drives per disk system