SAS cabling for the ESLL and ESLS storage enclosures

Learn about the different serial-attached SCSI (SAS) cabling configurations that are available for the ESLL and ESLS storage enclosures.

For more information about connecting ESLL and ESLS storage enclosures to the system, see Connecting an ESLL or ESLS storage enclosure to your system.

SAS adapter to the ESLL and ESLS storage enclosures

The following list describes some of the supported configurations for connecting SAS adapters to the ESLL and ESLS storage enclosures:

  1. Single SAS adapter to one ESLL or ESLS storage enclosure by using a mode 1 connection.
    • Connection by using SAS YO12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 1. Mode 1 connection of one ESLL or ESLS storage enclosure by using a YO12 cable to a single SAS adapter
    Mode 1 connection of one ESLL or ESLS storage enclosure by using a YO12 cable to a single SAS adapter
  2. Single SAS adapter to two ESLL or ESLS storage enclosures by using a mode 1 connection.
    • Connection by using SAS YO12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 2. Mode 1 connection of two ESLL or ESLS storage enclosures by using YO12 cables to a single SAS adapter
    Mode 1 connection of two ESLL or ESLS storage enclosures by using YO12 cables to a single SAS adapter
  3. One pair of SAS adapters to one ESLL or ESLS storage enclosure by using a mode 1 connection.
    • For SAS adapter pairs, you must attach the SAS cables to the same port on both adapters.
    • Connection by using SAS YO12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 3. Mode 1 connection of one ESLL or ESLS storage enclosure by using YO12 cables to one pair of SAS adapters
    Mode 1 connection of one ESLL or ESLS storage enclosure by using YO12 cables to one pair of SAS adapters
  4. One pair of SAS adapters to two ESLL or ESLS storage enclosures by using a mode 1 connection.
    • For SAS adapter pairs, you must attach the cables to the same port on both adapters.
    • Connection by using dual SAS YO12 cables to connect to the 5887 enclosure.
    Figure 4. Mode 1 connection of two ESLL or ESLS storage enclosures by using YO12 cables to one pair of SAS adapters
    Mode 1 connection of two ESLL or ESLS storage enclosures by using YO12 cables to one pair of SAS adapters
  5. Two independent SAS adapters to one ESLL or ESLS storage enclosure by using a mode 2 connection.
    • Connection by using two SAS YO12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 5. Mode 2 connection of ESLL or ESLS storage enclosure by using YO12 cables to two independent SAS adapters
    Mode 2 connection of ESLL or ESLS storage enclosure by using YO12 cables to two independent SAS adapters
  6. Two pairs of SAS adapters to one ESLL or ESLS storage enclosure by using a mode 2 connection.
    • For SAS adapter pairs, you must attach the cables to the same port on both adapters.
    • Connection by using SAS X12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 6. Mode 2 connection of one ESLL or ESLS storage enclosure by using X12 cables to two pairs of SAS adapters
    Mode 2 connection of one ESLL or ESLS storage enclosure by using X12 cables to two pairs of SAS adapters
  7. Four independent SAS adapters to one ESLL or ESLS storage enclosure by using a mode 4 connection.
    • For SAS adapter pairs, you must attach the cables to the same port on both adapters.
    • Connection by using SAS X12 cables to connect to the ESLL or ESLS storage enclosure.
    Figure 7. Mode 4 connection of one ESLL or ESLS storage enclosure by using X12 cables to four independent SAS adapters
    Mode 4 connection of one ESLL or ESLS storage enclosure by using X12 cables to four independent SAS adapters