Maximum Disk Shelves per Controller Configuration
HBA Type Number of Disk Shelf Chains per HBA
SAS-2 2x4 port 1
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.
Shelves
Max.
2x4 Port
SAS-2
HBA
Max.
4x4 Port
SAS-2
HBA
Max.
4x4 Port
SAS-3
HBA
Guidelines
ZS9-2
high-end
model
48 NA 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.
ZS9-2
mid-
range
model
24 NA 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.
ZS7-2
high-end
model
48 NA 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.
ZS7-2
mid-
range
model
24 NA 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.
ZS5-4 48 NA 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
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