Ceph storage interruption   cpk

Just before 23:09 quite a lot of ceph storage nodes became unreachable. This seems to be due to one of the redundant links between two datacenter locations failing for about 4 seconds. This triggered a whole slew of ceph osd processes being killed off and not starting again. A generic configuration change made for all our servers generated an extra interface, which confused some of the osd processes (depending on interface ordering) when starting up....

October 24, 2022 · updated November 29, 2022 ·  Simon

Netwerkschijf   howto

Information on all network disks In general you need to know the server name and share name to connect to a network disk. Most network disks are available directly from within the Radboud University network. Off campus use a VPN tunnel to connect to a network disk. A number of network disks or shares are available for all Science users: The U-disk: your science home directory - the server and share name can be found on dhz....

October 6, 2022 · updated November 29, 2022 ·  Remco

Data Storage   howto

Data Storage The data storage on C&CZ servers can be used from all kinds of C&CZ servers and personal computers, but also from other PCs or even from home with WinSCP or via VPN. Almost all disks that are managed by C&CZ, are being backed up regularly, in order to be able to restore data in case of small or large calamities. Home directories Every user with a Science login has or is entitled to an amount of disc space of a few Gigabytes on a server....

September 8, 2022 · updated December 7, 2022

Ceph data storage expanded   news

Since the end of 2019, C&CZ offers Ceph as a choice for data storage, next to the traditional RAID storage on individual fileservers. Because demand for Ceph storage is rising, the Ceph storage has been upgraded from 1.8 PiB to 2.8 PiB gross. With this upgrade, storage servers have been placed in a central RU datacenter, so the Ceph storage is now distributed over three datacenters. If you want to try whether Ceph suits you, please contact C&CZ....

November 23, 2021 · updated November 29, 2022 ·  Wim