Hydra Tentatively On-line after Maintenance
We are opening the Hydra cluster tentatively to our users and we allow interactive and batch processing.
On Fri. 02/03/2012, the DDN 9550 disk storage controller #2 of Hydra crashed. Finally today we replaced the failed parts and restored the DDN9550 storage operation using a replacement unit which was received yesterday evening (02-09-2012).
Please note that the system operates with ONLY three I/O servers out of the regular four at reduced redundancy levels and a single failure of some I/O component will render the system inoperative.
We are now in the position to install a fourth I/O node in parallel while the system is on-line. That was NOT possible before.
Stay tuned for developments.
Posted on: 6:03 PM, February 10, 2012