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impact of ssd failure

  • 19 March 2017
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Userlevel 2
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Can know impact of SSD failure if each node has 2 SSDs in slot0 & slot1:
1. Slot0 SSD failure
2. Slot1 SSD failure
3. Both SSDs failure (Know this will be CVM failure)
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Best answer by patrbng 20 March 2017, 12:44

With 2 SSD's, if slot 0 fails the Cvm reboots and will recover using slot1, vm rights/reads flow to other nodes while Cvm is restarting. If slot 1 fails, no Cvm reboot occurs but SSD capacity is reduced, missing blocks are retrieved from other nodes as needed and re protected. If both SSD's fail, the Cvm is down and all read/writes are done to other nodes.
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Userlevel 4
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With 2 SSD's, if slot 0 fails the Cvm reboots and will recover using slot1, vm rights/reads flow to other nodes while Cvm is restarting. If slot 1 fails, no Cvm reboot occurs but SSD capacity is reduced, missing blocks are retrieved from other nodes as needed and re protected. If both SSD's fail, the Cvm is down and all read/writes are done to other nodes.

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