Oracle ZFS Installation Manual page 23

HBA Type
SAS-2 2x4 port
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. Controllers cannot simultaneously use 2x4 port SAS-2 HBAs and
4x4 port SAS-2 HBAs. 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.
TABLE 4 Maximum Disk Shelves per Controller Configuration
Controller Max. Max.
Shelves 2x4 Port
SAS-2
HBA
ZS9-2 48 NA
high-end
model
ZS9-2 24 NA
mid-
range
model
ZS7-2 48 NA
high-end
model
ZS7-2 24 NA
mid-
range
model
ZS5-4 48 NA
Maximum Disk Shelves per Controller Configuration
Number of Disk Shelf Chains per HBA
1
Max. Max. Guidelines
4x4 Port 4x4 Port
SAS-2 SAS-3
HBA HBA
NA 4 Disk shelves can include 24x HDD/SSD, or combine
20x HDD/SSD plus 4x write-optimized and/or read-
optimized flash accelerators (SSDs). Total number of
chains is eight. Any combination of disk-only and write-
or read-optimized shelves may be combined within the
chain in any order.
NA 2 Disk shelves can include 24x HDD/SSD, or combine
20x HDD/SSD plus 4x write-optimized and/or read-
optimized flash accelerators (SSDs). Total number of
chains is four. Any combination of disk-only and write-
or read-optimized shelves may be combined within the
chain in any order.
NA 4 Disk shelves can include 24x HDD/SSD, or combine
20x HDD/SSD plus 4x write-optimized and/or read-
optimized flash accelerators (SSDs). Total number of
chains is eight. Any combination of disk-only and write-
or read-optimized shelves may be combined within the
chain in any order.
NA 2 Disk shelves can include 24x HDD/SSD, or combine
20x HDD/SSD plus 4x write-optimized and/or read-
optimized flash accelerators (SSDs). Total number of
chains is four. Any combination of disk-only and write-
or read-optimized shelves may be combined within the
chain in any order.
4 4 Disk shelves can include 24x HDD/SSD, or combine
20x HDD/SSD plus 4x write-optimized and/or read-
optimized flash accelerators (SSDs). Total number of
chains is eight. Any combination of disk-only and write-
or read-optimized shelves may be combined within the
chain in any order.
Installation Prerequisites and Hardware Overviews 23