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Shelf
Device Types
Maximum Number of Disk Shelves per Controller
Configuration
The following table shows the maximum number of disk shelves supported per controller
configuration.
Controllers cannot use 2X4 port SAS-2 HBAs and 4X4 port SAS-2 HBAs at the same
Note -
time. For controllers that support using DE2-24 and Sun Disk Shelves together, the controller
must use 4X4 port SAS-2 HBAs, which are only supported with software version 2013.1.0 and
later.
TABLE 50
Maximum Number of Disk Shelves per Controller
Controller
Max. Shelves
ZS4-4
36
ZS3-4
36
ZS3-2
16
7420
36
7320
6
7120
2
SAS-2
The SAS-2 (Serial Attached SCSI 2.0) host bus adapter (HBA) is designed for the Oracle ZFS
Storage Appliance with a standard chip set to support a high-density of target devices, up to
1024. You can daisy-chain SAS-2 disks to as many as 36 disk shelves for certain systems, for a
total of 864 disks. By applying entire disk shelves to pools, you gain the benefits of No Single
Point of Failure (NSPF) configurations, and striping across the maximum possible number
of devices. The SAS-2 HBA has 2x4 (8 PHYs) or 4x4 port (16 PHYs) with each supporting
6 Gbit/s (SAS-2) devices. For more information about the SAS-2 HBA, see the hardware
overview for your controller.
Data Slots
Cache/Log Slots
Max. 2X4 port SAS-2
Max. 4X4 port SAS-2
HBA
HBA
N/A
4
N/A
4
N/A
2
6
6
1
1
1
N/A
Disk Shelf Hardware Overview
Notes/
Examples
installed in the Sun
Disk Shelf.
N/A
Servicing the Disk Shelves
289
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