Upgrade of the HOME File Systems to StorNext 6.4 and Migration to new File Servers

Message-Id: 202101121436
Time: 18.01.2021, 8:00 a.m. till 25.01.2021 4:00 p.m.
Affected: SPEC, MPG04N, ARCHIV, BIOINFO, WFS_UNI01, GDZ01, MACSTORE, MBPC10500, MNPL, MPG10300, MPG10300gnom, MPG10300mako, MPG10300xray, UNI, MPG
Impact: file service not accessible during each scheduled down time

From Monday, January 18th till Thursday, January 25th the file service environment of StorNext special filesystems and the GWDG home directories directories will be upgraded.
The maintenance is preformed on one of GWDG’s three Hierarchical Storage Management (HSM) environments. The upgrade consists of a software upgrade to StorNext 6.4 and a migration to new hardware components (file servers). Because of the deployment of new file servers the upgrade work cannot be done without any down times. In order to avoid a long down time affecting all users the upgrade will be be performed successively for each file system. To stabilize the future file service all file systems needs to be checked. This results in a longer down time for each file system, but it is absolutely necessary.

For each file system the down time will take place according to the following time schedule:

SPEC start: 01/18/2021 8:00 a.m. end: 4:00 p.m.
MPG04N start: 01/18/2021 8:00 a.m. end: 4:00 p.m.
ARCHIV start: 01/19/2021 8:00 a.m. end: 5:00 p.m.
BIOINFO start: 01/19/2021 8:00 a.m. end: 3:00 p.m.
WFS_UNI01 start: 01/20/2021 8:00 a.m. end: 8:00 p.m.
GDZ01 start: 01/20/2021 8:00 a.m. end: 8:00 p.m.
MACSTORE start: 01/21/2021 8:00 a.m. end: 6:00 p.m.
MBPC10500 start: 01/21/2021 8:00 a.m. end: 6:00 p.m.
MNPL start: 01/22/2021 8:00 a.m. end: 4:00 p.m.
MPG10300 start: 01/22/2021 8:00 a.m. end: 4:00 p.m.
MPG10300gnom start: 01/22/2021 8:00 a.m. end: 4:00 p.m.
MPG10300mako start: 01/22/2021 8:00 a.m. end: 4:00 p.m.
MPG10300xray start: 01/22/2021 8:00 a.m. end: 4:00 p.m.
UNI start: 01/25/2021 8:00 a.m. end: 4:00 p.m.
MPG start: 01/25/2021 8:00 a.m. end: 4:00 p.m.

Please be aware that exports of user home directories to virtual machines (VM) via NFS are affected. In order to find out the corresponding downtime please have a look at the fstab file (on the VM) to verify the mounted file system.

For upgrading managed filesystems (fs using tape) the storage manager has to be stopped from 01/19/2021 till 01/21/2021; during this period of time no tape retrieves can be done. The archive service ($AHOME) is also affected by this means!