Disk array enclosure (DAE) firmware-based systems and methods for firmware upgrades
US12321645B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2023 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | May 23, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A request is received to upgrade firmware for disk array enclosures (DAEs). Each DAE is reachable by a host server using first and second paths. The first path extends from a first port of a first HBA of the host server to each of a set of first input/output modules (IOMs) in the DAEs. The first IOMs have first SAS expanders to which storage disks are connected. A flag is set in firmware of each first IOM that causes SMP and SES protocol services of a DAE to mark each respective storage disk connected to each respective SAS expander of the first SAS expanders as vacant. During the firmware upgrade, advertising to a SAS driver topology change events indicating that a storage disk has been removed or added is withheld based on the flag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.