Power Systems flash memory solutions

Explore the advantages of DAS and SAN

DAS and SAN are the most common options to provide the storage capacity needed for Power Systems. While both solutions provide exceptional storage capabilities, each has its advantages. Businesses can utilize either one or both of these storage solutions with Power Systems.

Direct Attached Storage (DAS)

DAS solutions are presented to the operating system as drives and are located in the system unit or in I/O drawers attached to the system unit. Offering the lowest latency storage option, they can also employ high-performance adapters with write cache to augment performance if needed. DAS solutions may also provide the lowest cost hardware configuration.

A full set of protection options such as RAID 0, 5, 6, 10, and system mirroring can safeguard against the possibility of drive failure. In addition, the Power System operating systems and backup/recovery applications are available for data center activities. Internal drives are often the lower cost option from a single server perspective and/or for a server which has a modest number of drives.

Power Systems offers three types of direct attached flash storage:

By assigning frequently accessed data to the direct attached flash/SSD, performance can be significantly improved.

Storage Area Network (SAN) Attached Storage

IBM Systems Storage SAN solutions enable sharing of data across multiple servers, with enterprise class data protection, reliability, and flexibility. Supporting multiple servers, even heterogeneous servers, IBM System Storage can reduce overall storage costs and provide a single management interface. IBM System Storage can enhance the ability to adjust storage configurations to the meet the changing needs of your business. SAN-attached storage systems also support Power Systems Live Partition Mobility.  IBM System Storage offers the capability to combine SSD and HDD within the Storage system and IBM Easy Tier software that can automatically place frequently accessed data onto SSD. SAN are attached to Power Systems via a Fibre Channel connection and often in combination with a Fibre Channel switch.

IBM offers two basic types of SAN attached flash solutions:  IBM FlashSystem and hybrid storage solutions from IBM Systems Storage.  IBM FlashSystem offers the best possible latency of the IBM SAN-attached options and is well suited for applications requiring excellent I/O performance such as OLTP and real-time databases.  IBM FlashSystem can be combined with the IBM SAN Volume Controller (SVC) or Storwize V7000 to deliver enterprise SAN functionality and high performance flash in an integrated SAN environment.

IBM FlashSystem can also be attached to Power servers directly through a Fibre Channel card. It is well suited for environments that do not need advanced SAN functions.  Elimination of switches and SAN components can also reduce expenses.

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Next generation applications for big data and analytics and cognitive computing are providing unprecedented insights into opportunities, threats and efficiencies. IBM Power Systems is at the forefront of delivering solutions to gain faster insights from analyzing both structured information and unstructured big data. With the secure, flexible and open platform of IBM Power Systems plus solutions and software, organizations can outpace their competitors by delivering faster services, providing differentiated offerings and turning operational cost into investment opportunity.

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IBM Power Systems deliver flexibility and choice of operating systems to enable your business to support the next generation applications for big data and analytics and cognitive computing that are transforming how organizations work today. Whether running 1, 2, or all 3 - coupled with PowerVM, they maximize the benefit of Power Systems in your business.

IBM's integrated approach to developing Systems and Systems Software stacks together delivers a platform that supports next generation applications for big data and analytics and cognitive computing on an open platform for choice while providing maximum utilization, availability, and flexibility to help you deliver new advantages to your business.

IBM and IBM Business Partner solutions exploit key benefits in IBM Power Systems’ unique design combined with systems software to provide support for next generation applications for big data and analytics and cognitive computing to providing unprecedented insights into opportunities, threats and efficiencies to your organization.


Over the last five years thousands of clients have migrated to IBM Power Systems. Learn how Power Systems has helped them support next generation applications for big data and analytics and cognitive computing on an open platform for choice while improving business performance, reducing risk, and establishing a platform for growth.

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