Explore the advantages of internal storage and Storage Area Networks
Internal storage and Storage Area Networks (SAN) are the most common options to provide the terabytes of storage capacity needed for Power Systems applications. While both solutions provide exceptional storage capabilities, each has its advantages. You can utilize either one or both of these storage solutions on your Power server depending upon your specific storage needs.
Internal storage / Direct Access Storage (DAS)
Power Systems now offers three types of DAS storage: HDD, SSD, or PCIe Flash Adapters that can be located in the server or in I/O drawers. Assigning data to specific Flash or SSD can instantly enhance performance. In fact, when using IBM i, the operating system can automatically place hot data on the SSD or Flash. Various protection options such as RAID 0, 5, 6, 10, and system mirroring can be used to safeguard against the possibility of SSD or Flash failure.
Storage Area Network (SAN)
IBM Systems Storage offers great optimization/virtualization characteristics. Supporting multiple servers, even heterogeneous servers, a SAN reduces the overall cost of storage to your business and provides a single management interface for your data. A storage area network can enhance the ability to adjust your server’s storage configuration in order to the meet the changing needs of your business. In turn, this simplifies operating your heterogeneous systems and increases flexibility.
A SAN offers advanced functions such as: creating a backup copy locally or remotely, minimizing impact to server application availability, and enhancing high availability. Designed for reliability and performance, IBM storage area networks will also protect the integrity of your server with disaster recovery capabilities. SANs are also important to the Power Systems Live Partition Mobility capability.
IBM SAN Storage systems offer the capability to combine SSD and HDD within the Storage system and software that can automatically place frequently accessed data onto the SSD. IBM FlashSystem offers high capacity and extreme performance and can be connected to Power servers through a SAN environment, through a Fibre Channel switch or Fibre Channel card.