Cabinet Configuration Guidelines
shelves will have better performance than two SAS HBAs with four chains and eight disk
shelves.
Cable Lengths
■
The maximum cable length between DE3-24 disk shelves is three meters.
■
The maximum cable length between DE2-24 disk shelves is three meters.
■
The maximum cable length between Sun Disk Shelves is three meters.
■
The maximum cable length between a controller and disk shelves is six meters.
■
The maximum cable length is six meters between disk shelves in a single chain that spans
two adjacent cabinets.
Supported Disk Shelf Combinations and HBAs
Disk shelves are supported by specific HBAs in the controller, and can be combined in certain
configurations within a system. Use the following table to determine the HBA type required by
each disk shelf model.
TABLE 1
Required HBA per Disk Shelf Model
Disk Shelf Model Required HBA
DE3-24 Disk Shelf SAS-3 4x4 port HBA
DE2-24 Disk Shelf SAS-2 4x4 port HBA or SAS-2 2x4 port HBA
Sun Disk Shelf SAS-2 4x4 port HBA or SAS-2 2x4 port HBA
DE2-24 and Sun Disk Shelf together SAS-2 4x4 port HBA
SAS-2 2x4 port HBA for only Sun ZFS Storage 7120
The following table describes which disk shelf models can be used together for which controller
configurations, as of software release OS8.6.8. To understand which controllers support which
HBA types, see “Maximum Disk Shelves per Controller Configuration” on page 17.
TABLE 2
Supported Disk Shelf Combinations per Controller Configuration
Controller
Configuration
All DE3 Disk
Shelves
All DE2 Disk
Shelves
DE3 and DE2 Disk
Shelves
DE2 and Sun Disk
Shelves
ZS5-4 with SAS-3
4x4 port HBAs
Yes No No No
ZS5-4 with SAS-2
4x4 port HBAs
No Yes No No
16 Oracle ZFS Storage Appliance Installation Guide • December 2016
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