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Hot swapping a dead drive with hardware raid on linux

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linux-howto

http://serverfault.com – I have a server with 4 SATA hot-swappable drives and a 3Ware 9650SE-4LPML hardware RAID controller. The server runs Ubuntu 10.04.3 LTS and I use tw_cli to control the RAID array. So, a disk died and after a reboot the controller had kicked it out of the array: # tw_cli /c0 show Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-5 DEGRADED - - 64K 5587.9 RiW ON VPort Status Unit Size Type Phy Encl-Slot Model ---------- (HowTos)