Cabling the 5802 disk subsystem

Learn about how to connect the 5802 disk subsystem.

1. To select a cabling configuration that suits your requirements, see Table 1.
2. Cable the 5802 disk subsystem.
   Note: For SAS cable information, see Serial-attached SCSI cable planning.

   Table 1. 5802 disk subsystem configuration requirements

   Configuration features	Configuration requirements
   Two hard disk drive partitions with 9 disks per hard disk drive partition This is a multi-initiator high-availability configuration. Dual Serial-attached SCSI (SAS) connectivity to all drives.	To see the physical cabling, see Figure 1. Operating system: AIX®, IBM® i, or Linux SAS adapter card: Either two (FC 5901) - PCIe Dual - x4 SAS Adapters or two (FC 5903) - PCIe Dual - x4 3Gb SAS RAID Adapters Hard disk drive partitions switch: position 2 Cables: Four (FC 3688) - SAS cables (AT) 0.6 Meter. Note: For the AIX and Linux operating system, this must be a RAID configuration. You must have a minimum of one disk drive per hard disk drive partition.
   1 hard disk drive partition with 18 disks and a single SAS adapter.	For related physical cabling, see Figure 2. Operating system: AIX or Linux SAS adapter card: One (FC 5901) - PCIe Dual - x4 SAS Adapter Hard disk drive partitions switch: position 1 Cables: One (FC 3688) - SAS Cable (AT) 0.6 Meter.
   2 hard disk drive partitions with 9 disks per hard disk drive partition and a single SAS adapter.	To see the physical cabling, see Figure 3. Operating system: AIX, IBM i, or Linux SAS adapter card: One (FC 5901) - PCIe Dual - x4 SAS Adapter Hard disk drive partitions switch: position 2 Cables: Two (FC 3688) - SAS Cables (AT) 0.6 Meter. Note: Must have a minimum of one disk drive per hard disk drive partition.
   2 hard disk drive partitions with 9 disks per hard disk drive partition and two SAS adapters.	To see the physical cabling, see Figure 4. Operating system: AIX, IBM i, or Linux SAS adapter card: Two (FC 5901) - PCIe Dual - x4 SAS Adapters Hard disk drive partitions switch: position 2 Cables: Two (FC 3688) - SAS Cables (AT) 0.6 Meter. Note: Must have a minimum of one disk drive per hard disk drive partition.
   2 hard disk drive partitions with 9 disks per hard disk drive partition and four SAS adapters (Two pairs of SAS adapters, each running a set of 9 disk drives). This is a multi-initiator high-availability configuration. Dual SAS connectivity to all drives.	To see physical cabling, see Figure 5. Operating system: AIX, IBM i, Linux SAS adapter card: Either four (FC 5901) - PCIe Dual - x4 SAS Adapters or four (FC 5903) - PCIe Dual - x4 3Gb SAS RAID Adapters Hard disk drive partitions switch: position 2 Cables: Four (FC 3688) - SAS Cables (AT) 0.6 Meter. Notes: For the AIX and Linux operating system, this must be a RAID configuration. You must have a minimum of one disk drive per hard disk drive partition.
   1 hard disk drive partition with 18 disks and dual SAS adapters. This is a multi-initiator high-availability configuration. Dual SAS connectivity to all drives.	For related physical cabling, see Figure 6. Operating system: AIX or Linux SAS adapter card: Either two (FC 5901) - PCIe Dual - x4 SAS Adapters or two (FC 5903) - PCIe Dual - x4 3Gb SAS RAID Adapters Hard disk drive partitions switch: position 1 Cables: Two (FC 3688) - SAS Cables (AT) 0.6 Meter. Note: For the AIX and Linux operating system, this must be a RAID configuration.
   4 hard disk drive partitions: Partition 1: Drives 01-05 Partition 2: Drives 06-09 Partition 3: Drives 10-14 Partition 4: Drives 15-18 This configuration is optimized for boot partitions.	To see the physical cabling, see Figure 7. Operating system: AIX or Linux SAS adapter card: Four (FC 5901) - PCIe Dual - x4 SAS Adapters Hard disk drive partitions switch: position 4 Cables: Four (FC 3688) - SAS Cables (AT) 0.6 Meter. Note: You must have a minimum of one disk drive per hard disk drive partition.

   Figure 1. Physical cabling example: Two hard disk drive partitions with nine disks per hard disk drive partition, dual SAS adapters, hard disk drive partitions switch position 2

   

   Figure 2. Physical cabling example: One hard disk drive partition with 18 disks, a single SAS adapter, hard disk drive partitions switch position 1

   

   Figure 3. Physical cabling example: Two hard disk drive partitions with nine disks per hard disk drive partition, a single SAS adapter, hard disk drive partitions switch position 2

   

   Figure 4. Physical cabling example: Two hard disk drive partitions with nine disks per hard disk drive partition, two SAS adapters, hard disk drive partitions switch position 2

   

   Figure 5. Physical cabling example: Two hard disk drive partitions with nine disks per hard disk drive partition, four SAS adapters, hard disk drive partitions switch position 2

   

   Figure 6. Physical cabling example: One hard disk drive partition with 18 disks, dual SAS adapters, hard disk drive partitions switch position 1

   

   Figure 7. Physical cabling example: Four hard disk drive partitions with four or five disks per hard disk drive partition, hard disk drive partitions switch position 4

   
3. Set the hard disk drive partitions switch to the proper position for your cabling configuration by using Table 1.
4. Cable the 5802 disk subsystem to your server. For details, see Cabling the 5802 and 5877 to the server.