Model 983 all-flash

The table in this topic shows the point-to-point connections for SAS cables on a Model 983.

SAS cabling table

Table 1 shows a summary of SAS cabling.

Note: Location designators are labeled as link in Table 1.

Table 1. SAS cabling matrix – DA Pair 10 (Model 983)
From I/O enclosure	Link	To Flash enclosure
1G3-C1-T1	10A1	I1-F03-P1-C1-T1
1G3-C1-T2	10A2	I1-F03-P1-C2-T1
1G3-C1-T3	10B1	I1-F04-P1-C1-T1
1G3-C1-T4	10B2	I1-F04-P1-C2-T1
1G4-C8-T1	10a1	I1-F03-P1-C1-T2
1G4-C8-T2	10a2	I1-F03-P1-C2-T2
1G4-C8-T3	10b1	I1-F04-P1-C1-T2
1G4-C8-T4	10b2	I1-F04-P1-C2-T2

Flash SAS cables

SAS cables and connectors are identified with two different color codes and a location designator:
1. A colored band, corresponding to the color code of the DA pair, is found on each end of the cable near the connector. These color codes are shown in Figure 1. DA Pair 10 color code is shown in Figure 2.
2. The connector is color coded to help prevent cross-cabling at the SAS flash enclosure enclosure services module (ESM) and I/O enclosure adapter (PCIe and SAS device).
3. I/O enclosure adapter (PCIe and SAS device) connectors always appear in the following order:
```
white (T1), green (T2), black (T3), and blue (T4)
```
  as shown in Figure 3 and Figure 4.
4. A black or white label at each end of the cable shows a location designator (for example, 10A1). Both ends of the cable have the same location designator and DA pair color code (example: gray). However, the connector at each end of the same cable usually does NOT have the same color code.
5. The following alternating color scheme is the same for all Flash SAS cables, and is independent of the DA pair color code:
  - Connectors on cables that attach to I1-1G3-P1-C1-Tx or I1-1G3-P1-C7-Tx have white labels with black text.
  - Connectors on cables that attach to I1-1G4-P1-C2-Tx or I1-1G4-P1-C8-Tx have black labels with white text.
An example of this showing both ends of two SAS cables to an enclosure is shown in Figure 2.
Location designators are in the form CTP, where:
- C is the device adapter pair (10).
- T is the port pair on the device adapter (A, B, a, b) (uppercase for left ESM, lowercase for right device adapter in pair).
- P is the logical position of the downstream SAS expander card.

Figure 2. Flash SAS cable connector label example. Two cables shown.

Flash SAS cable connector color codes - I/O enclosure adapter (PCI3, SAS device, zHyperLink) — Figure 3. Flash SAS cable connector color codes - I/O enclosure adapter (PCIe and SAS device)

Flash SAS cable connector color codes - SAS expander card end — Figure 4. Flash SAS cable connector color codes - SAS flash enclosure