Jun 13, 2024
EXP24SX SAS Storage Enclosures – Introduction to Power E1080
1.6.3 EXP24SX SAS Storage Enclosures
If you need more disks than are available with the internal disk bays, you can attach more external disk subsystems, such as an EXP24SX SAS Storage Enclosure (#ESLS).
The EXP24SX drawer is a storage expansion enclosure with 24 2.5-inch SFF SAS bays. It supports up to 24 hot-plug HDDs or SSDs in only 2 EIA of space in a 19-inch rack. The EXP24SX SFF bays use SFF Gen2 (SFF-2) carriers or trays. With AIX/Linux/VIOS, the EXP24SX can be ordered with four sets of 6 bays (mode 4), two sets of 12 bays (mode 2) or one set of 24 bays (mode 1). With IBM i one set of 24 bays (mode 1) is supported. It is possible to change the mode setting in the field by using software commands along with a specifically documented procedure.
The attachment between the EXP24SX drawer and the PCIe Gen 3 SAS adapter is through SAS YO12 or X12 cables. The PCIe Gen 3 SAS adapters support 6 Gb throughput. The EXP24SX drawer can support up to 12 Gb throughput if future SAS adapters support that capability.
The EXP24SX drawer includes redundant AC power supplies and two power cords.
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Figure 1-10 shows the EXP24SX drawer.
Figure 1-10 EXP24SX drawer
For more information about SAS cabling and cabling configurations at IBM Documentation.
Table 1-19 lists the SFF-2 SSD and HDD feature codes that the Power E1080 supports in the expansion drawer at the time of this writing.
Table 1-19 Supported SFF-2 and HDD feature codes in the expansion drawer
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32 IBM Power E1080: Technical Overview and Introduction
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