Pile of Dross

RAL T1 SC4 Status - GridPPwiki

So week 1 of SC4. Result: Hmm.

2 disk servers broken, expected rate not achieved, possible network bottleneck found. Pretty par for the course really. Its been a frustating week - not knowing whether our inability to achieve the rate we achieved in SC3 is due to some regression on our side or CERN’s (Probably both to some extent I think) but is the rate we’re achieving sufficently good that we should perseve with our current transfer method rather than switch to one which promises more effective use of resources but is less well tested and understood than the current one? The network issue was escpecially aggravating - there’s only one person in our team who really understands the network layout - its a closed book to the rest of us - especially when the 3 people who work in the office who’s whiteboard has the only diagram of the network, are out. And the disk servers? Well they’ve been standing idle for about month and then we started hitting them with instantaneous heavy transfer rates not really surprising they fell over.

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