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Oracle® ZFS Storage Appliance Customer Service Manual

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Updated: September 2018
 
 

Maximum Disk Shelves per Controller Configuration

When determining how many disk shelves a controller configuration supports, it is important to remember that each disk shelf chain can support up to six disk shelves, and some controller configurations are limited to a specific number of total disk shelves. The following table details the number of supported disk shelf chains per HBA type.

Table 54  Supported Disk Shelf Chains per HBA
HBA Type
Number of Disk Shelf Chains per HBA
SAS-3 4x4 port
2
SAS-2 4x4 port
2
SAS-2 2x4 port
1

Controllers cannot simultaneously use 2x4 port SAS-2 HBAs and 4x4 port SAS-2 HBAs. As of software release OS8.7.0, 4x4 port SAS-3 HBAs and 4x4 port SAS-2 HBAs can be used together in the same system. Sun Disk Shelves are not supported in any system that includes a SAS-3 HBA, or a combination of SAS-3 and SAS-2 HBAs.

The following table shows the maximum number of HBAs per controller, and the maximum number of disk shelves supported per controller configuration. Both standalone and clustered controllers support the same maximum number of disk shelves. For information on disk compatibility, see the Oracle Systems Handbook.

Table 55  Maximum Disk Shelves per Controller Configuration
Controller
Max. Shelves
Max. 2X4 Port SAS-2 HBA
Max. 4X4 Port SAS-2 HBA
Max. 4x4 Port SAS-3 HBA
ZS5-4
48
N/A
4
4
ZS5-2
16
N/A
2
2
ZS4-4
36
N/A
4
4
ZS3-4
36
N/A
4
N/A
ZS3-2
16
N/A
2
2
7420
36
6
6
N/A
7320
6
1
1
N/A
7120
2
1
N/A
N/A