ITS Service Status Report

Scheduled Maintenance — Resolved

MiStorage share change affecting College of Engineering

Services Affected: MiStorage CIFS, MiStorage NFS

Start Time: 03/02/2019 11:00 pm

Maintenance Completed: 03/02/2019 11:05 pm

Issue Symptoms: Outage

Brief input/output disruption (about 1 second on each share) as the folders on the NAS cluster that supports MiStorage are moved to a new location that is eligible for cloud archival and which will allow for consolidated snapshots. All of the work will take a few hours but the disruption should just be for a moment within that window. Once cloud archival occurs the amount of disk free space may appear to increase as bits are moved into the cloud from files that have not been accessed in over six months. This accounting difference will be changed in a future release of the cluster software which will support cloud aware size quotas and reporting.

Shares affected are:

NFS Shares
cmarchive
dirac
kdur1
wellman

CIFS Shares
aero-server
bme-share
ea-advancement
ea-artsengine
ea-cedo
ea-cfe
ea-crlte
ea-eacs
ea-ecrc
ea-grad-ed
ea-honeng
ea-iic
ea-ipe
ea-livingarts
ea-osa
ea-rpm
ea-techcomm
lingroup-mistorage
me-files
me-neurobionics
me-nsfsdc
me-wumrc
name-storage
nglove-pharmavsdiversity

Technical Details

Service Type: Production

Server Name: macc-win.m.storage.umich.edu, macc-isi-nfs.value.storage.umich.edu

Comments:

Brief input/output disruption (about 1 second on each share) as the folders on the NAS cluster that supports MiStorage are moved to a new location that is eligible for cloud archival and which will allow for consolidated snapshots. All of the work will take a few hours but the disruption should just be for a moment within that window. Once cloud archival occurs the amount of disk free space may appear to increase as bits are moved into the cloud from files that have not been accessed in over six months. This accounting difference will be changed in a future release of the cluster software which will support cloud aware size quotas and reporting.

Shares affected are:

NFS Shares
cmarchive
dirac
kdur1
wellman

CIFS Shares
aero-server
bme-share
ea-advancement
ea-artsengine
ea-cedo
ea-cfe
ea-crlte
ea-eacs
ea-ecrc
ea-grad-ed
ea-honeng
ea-iic
ea-ipe
ea-livingarts
ea-osa
ea-rpm
ea-techcomm
lingroup-mistorage
me-files
me-neurobionics
me-nsfsdc
me-wumrc
name-storage
nglove-pharmavsdiversity

Report Additional Impacts

Contact the ITS Service Center for more information or to report additional impacts.