Partially Populated Enclosures; Partial Population Configurations - HGST Ultrastar Data102 User Manual

User Guide
c. Zone groups will not be visible due to zoning being disabled. All hosts will have access
to all drives.
d. Issue the following command to access all hosts smp_discover_list:
smp_discover_list --ignore /dev/bsg/expander-9:39
5.4 Partially Populated Enclosures
5.4.1 Partial Population Configurations
The Ultrastar Data102 supports partially populated configurations that allow a user to increase
the size of storage based on their needs. There are specific requirements that must be
followed to ensure that the enclosure functions properly during operation. Partial population
configurations that do not comply with the requirements listed in this section may result in
enclosure performance issues. The following section details the requirements for HDD and HDD/
SSD based configurations.
Minimum HDD Partial Population
The enclosure supports a minimum of 60 SAS or SATA HDDs for a partially populated enclosure.
The enclosure does not support a mix of SAS and SATA drives. The enclosure must be populated
starting with the drives closest to the rear of the enclosure and work towards the front of the
enclosure. If more drives are installed into the enclosure, any unfinished rows must be completed
with drive blanks. The image below details the minimum required configuration for an HDD only
configuration.
Note: Repeat this substep for all expanders.

5.4 Partially Populated Enclosures

251
5. System Management