HP LH4r HP Netserver LH 3/r and LH 4/r Mass Storage Kit - Page 49

3 Configure Mass Storage Decide RAID or Non-RAID The disk drives in the secondary hot-swap mass storage cage, along with any nonhot-swap SCSI devices, can be configured in two different ways: • Redundant Array of Independent Disks (RAID) configuration under control of the integrated HP NetRAID controller • Non-RAID configuration under the control of the SCSI B controller Non-RAID configuration (also called "JBOD" or "Just a Bunch of Disks" configuration) is quick and easy, and it is the factory default for the SCSI B Channel. All Network Operating Systems (NOSs) supported by your NetServer can be installed on drives controlled by a non-RAID SCSI controller. This chapter describes non-RAID configuration. RAID (Redundant Array of Independent Disks) configuration can enhance performance and provide fault tolerance (redundancy). For more information, see the Integrated HP NetRAID Controller Configuration Guide . Some NOSs cannot be installed on a RAID logical drive. If you want RAID configuration, go to Appendix A. NOTE Integrated HP NetRAID does NOT support tape drives. Configuring both hot-swap mass storage cages as RAID means that the NetServer's I/O board does NOT support tape drives in the non-hot-swap shelves. To configure both hot-swap mass storage cages as RAID and use a tape drive, order the D5025A SCSI controller board , and install it to control the tape drive. Non-RAID Configuration You connected the secondary hot-swap mass storage cage to the HP NetServer's SCSI B Channel. The factory default settings exclude SCSI B from the integrated HP NetRAID controller. This puts the secondary cage on the SCSI B controller, which also controls any non-hot-swap SCSI devices. 45