Message-Id: 201908091125
Time: 15.08.2019, 5pm – 9pm
Affected: GWDG ESX environment, network drives of the universities institutes, student home directories, network drives of the university administration, network drives and parts of the ESX environment of the administrative headquarters of Max Planck Society, various other services
Impact: None

On Thursday, 15.08.2019, a firmware upgrade of the core NetApp storage system will be performed in the maintenance window from 5pm. These systems are core components of the GWDG storage infrastructure, on which almost all applications and services depend on directly or indirectly. The goal of the upgrade is to improve operational stability, enable required new features, and ensure the future supportability of the systems.

The upgrades will be made online without service interruption by performing several failovers between the redundant functional units of the systems. For all clients, these will be largely transparent. During the multiple failovers there might be increased latencies when accessing the storage systems for a short time. For the users, no impairment is to be expected.