IBM DS3000 system storage RAID controllers support the large and growing data storage requirements of business-critical applications. These scalable solutions offer you data access and protection to meet your existing storage requirements and prepare for the future.The IBM System Storage DS3400 Express models (machine type 1726, Models 41E, and 42E) are designed to provide solutions to meet midrange and departmental storage requirements for advanced function, high availability, modular and scalable storage capacity, Serial Attached SCSI (SAS) or Fibre Channel (FC) connectivity, and support for RAID levels 0, 1, 3, 5, and 10.