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correlator:rebuild [2008/06/17 17:42]
127.0.0.1 external edit
correlator:rebuild [2008/11/07 12:35]
chotan
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 If, upon start up (or at any other time, although this is //highly unlikely//) you experience a disk failure in a set of VLBI disks, fear not! The disk sets are built using RAID5, which is a striping protocol wherein a 7-disk set in which any one disk fails can still have all its data retrieved. This leads to a loss of storage space, but given these disks are shipped around Australia using road freight, we think it's a loss well worth taking!!\\ If, upon start up (or at any other time, although this is //highly unlikely//) you experience a disk failure in a set of VLBI disks, fear not! The disk sets are built using RAID5, which is a striping protocol wherein a 7-disk set in which any one disk fails can still have all its data retrieved. This leads to a loss of storage space, but given these disks are shipped around Australia using road freight, we think it's a loss well worth taking!!\\
  
-Hopefully you won't need to deal with a fully un-initialised disk set. If you do, see "Creating XRAIDs".\\+Hopefully you won't need to deal with a fully un-initialised disk set. If you do, see [[createnew|Creating XRAIDs]].\\
  
 The rebuilding process involves only the XRAID firmware, and not the I/O on the fibrechannel,​ so a disk failure does not stop you using the disk set immediately,​ but you should begin the rebuild as soon as you detect a failure. The rebuilding process involves only the XRAID firmware, and not the I/O on the fibrechannel,​ so a disk failure does not stop you using the disk set immediately,​ but you should begin the rebuild as soon as you detect a failure.
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 It is only if two or more disks fail on the one start-up that you will lose all your data. **Insert disks carefully!!!** It is only if two or more disks fail on the one start-up that you will lose all your data. **Insert disks carefully!!!**
 +\\
  
 +[[xraid|Back to XRAID menu]]
  
  
  
correlator/rebuild.txt · Last modified: 2008/11/07 12:35 by chotan