Discovery and isolation of misbehaving devices in a data...

Details Discovery and isolation of misbehaving devices in a data... Discovery and isolation of misbehaving devices in a data...

2006-04-25

2006-04-25

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S004110, C398S002000, C398S003000, C370S221000, C370S222000, C370S223000

Reexamination Certificate

active

07036042

ABSTRACT:
A data storage system includes controller nodes and a storage component. The controller nodes couple the storage component to a host. The storage component includes a controller and sleds with disk drives. The host and the storage component form an arbitrated loop. When the arbitrated loop is down, the controller removes the storage component from the arbitrated loop so the controller, the sleds, and the disk drives form an internal loop. When the internal loop is also down, the controller tests each of the sleds individually and marks those that are not responding properly. If a sled is responding properly the controller tests each of the drives in that sled individually and marks those that are not responding properly. The controller adds back into the internal loop the sleds and the drives that are not marked as bad, and then the storage component back into the arbitrated loop.

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Fortra, Fibre Channel JBOD, 10-bay Tower & Rackmount Enclosures—Installation Guide, 1999, JMR Electronics Inc.

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