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Entry  Fri Aug 14 10:39:50 2009, josephb, Configuration, Computers, Raid update to Framebuilder (specs) 
    Reply  Tue Aug 25 01:27:09 2009, rana, Configuration, Computers, Raid update to Framebuilder (not quite) 
       Reply  Tue Sep 8 15:14:26 2009, rana, alex, Configuration, DAQ, RAID update to Framebuilder: directories added + lookback increased 
Message ID: 1939     Entry time: Tue Aug 25 01:27:09 2009     In reply to: 1901     Reply to this: 1973
Author: rana 
Type: Configuration 
Category: Computers 
Subject: Raid update to Framebuilder (not quite) 


The RAID array servicing the Frame builder was finally switched over to JetStor Sata 16 Bay raid array. Each bay contains a 1 TB drive.  The raid is configured such that 13 TB is available, and the rest is used for fault protection.

The old Fibrenetix FX-606-U4, a 5 bay raid array which only had 1.5 TB space, has been moved over to linux1 and will be used to store /cvs/cds/.

This upgrade provides an increase in look up times from 3-4 days for all channels out to about 30 days.  Final copying of old data occured on August 5th, 2009, and was switched over on that date.

 Sadly, this was only true in theory and we didn't actually check to make sure anything happened.

We are not able to get lookback of more than ~3 days using our new huge disk. Doing a 'du -h' it seems that this is because we have not yet set the framebuilder to keep more than its old amount of frames. Whoever sees Joe or Alex next should ask them to fix us up.

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