Various hardware components can be activated and deactivated for operational or maintenance purposes.
There are some operational scenarios in which the cluster must be powered down. First deactivate the cluster before powering down to render the restarting process easier. Deactivation enables a graceful shutdown of the cluster. For information on powering down a cluster, see Safely Power Down a VAST Cluster.
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Connect to the VAST Web UI. From the menu, (click
) select Infrastructure > Cluster.
-
Select
at the right side of the cluster to deactivate, and then select Deactivate.
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Connect to the VAST Web UI. From the menu, (click
-
Select
To deactivate the cluster from the VAST CLI, use the cluster deacticate command.
To activate a cluster from the VAST CLI, use the cluster activate command.
You can deactivate a DNode before you power down the DNode for any operational reason that requires a reboot of the DNode.
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Connect to the VAST Web UI. From the menu, (click
-
Select
) Deactivate.
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Connect to the VAST Web UI. From the menu, (click
-
Select
) Activate.
To deactivate a DNode from the VAST CLI, run the dnode deactivate command.
To activate a DNode from the VAST CLI, run the dnode activate command.
You can deactivate a DTray before you power down the DTray for any operational reason that requires a reboot of the DTray.
-
Connect to the VAST Web UI. From the menu, (click
-
Select
-
Connect to the VAST Web UI. From the menu, (click
-
Select
To deactivate a DTray from the VAST CLI use the dtray deactivate command.
To activate a DTray from the VAST CLI use the dtray activate command.
Warning
VIP Pools are required to have a minimum of 2 CNodes active, If all CNodes in a VIP Pool must be deactivated, contact support for guidance, or either disable or delete the pool.
Caution
When deactivating CNodes, make sure to maintain the following ratios to maintain cluster viability and data availability:
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For larger clusters, at least 2 fully operational CNodes must be available for every 20 operational DNodes.
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For smaller clusters, at least 1 fully operational CNode must be available.
Before deactivating a CNode, confirm that the vippools using this CNode contain at least one another CNode which is not running VMS
You can deactivate a CNode before you power down the CNode for any operational reason that requires a reboot of the CNode.
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Connect to the VAST Web UI. From the menu, (click
-
Select
-
Connect to the VAST Web UI. From the menu, (click
-
Select
To deactivate a CNode from the VAST CLI, use the cnode deactivate command.
To activate a CNode from the VAST CLI, use the cnode activate command.
Deactivation is a feature that copies data to other devices from an SSD or NVRAM SSD and stops the cluster from using the SSD or NVRAM, in preparation for removal and replacement. Deactivation enables you to avoid perfomance degradation when you need to replace SSDs and NVRAMs because it prevents a data rebuild from being triggered when you remove devices.
Deactivation may take several hours and removes the capacity of the deactivated SSD or NVRAM from the cluster.
Note
Initiate deactivation approximately 24 hours prior to a scheduled SSD/NVRAM replacement to be sure the deactivation completes before the replacement.
After you replace the SSD or NVRAM into the slot, you need to activate the deactivated SSD(s) or NVRAM(s) to restore the removed capacity to the cluster.
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Deactivate the device(s) that you want to replace:
Note
For Mavericks TLC DBoxes: if you are removing a TLC type SSD, deactivate the slot in which the SSD resides instead of deactivating the SSD. This deactivates all SSDs in the slot. After replacing the SSD, activate the slot again.
For CERES Dboxes: If you are removing an NVRAM, deactivate both NVRAMs that belong to the same NVRAM sled or deactivate the sled. To see which NVRAMs reside in the same sled, go to the hardware view. You can get to this from the Hardware Layout menu item in the left navigation menu or from the Hardware View option in the actions menu for the specific NVRAM in the Infrastructure page. In the Hardware Layout page, you can view the NVRAM and SSD layout and click each NVRAM to see which sled it is housed in and which other NVRAMs are housed in the same sled.
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To deactivate an SSD, select Infrastructure > SSDs. Select
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To deactivate an NVRAM, select Infrastructure > NVRAMs. Select
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To deactivate an NVRAM sled, select the sled in the Hardware Layout page and click the deactivate button (
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To deactivate a TLC carrier slot, select Infrastructure > Slots. Select
For an SSD or NVRAM, you are prompted to choose if you want to deactivate the slot as well:
Deactivating the slot is sometimes warranted for troubleshooting purposes.
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If you want to deactivate the slot, slide the slider to the enabled position.
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Click Confirm to confirm the action.
Deactivation commences and the progress is displayed in the Activities page, which you can navigate to from the menu.
After you replace the SSD(s) or NVRAM(s) that you deactivated, activate all deactivated SSD(s) or NVRAM(s) to restore the removed capacity to the cluster:
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To activate an SSD, select Infrastructure > SSDs. Select
) for the SSD.
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To activate an NVRAM, select Infrastructure > NVRAMs. Select
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To activate an NVRAM sled, select the sled in the Hardware Layout page and click the activate button (
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To activate a TLC carrier slot, select Infrastructure > Slots. Select
The activation task commences and the progress is displayed in the Activities page, which you can access from the menu.
Deactivate SSDs and NVRAMs before you remove them. Activate all deactivated devices after replacing them to restore their capacity.
Note
For Mavericks TLC DBoxes: if you are removing a TLC type SSD, deactivate the slot in which the SSD resides instead of deactivating the SSD. This deactivates all SSDs in the slot. After replacing the SSD, activate the slot again. To see the slot index for the SSD, use the ssd list command.
For CERES Dboxes: If you are removing an NVRAM, deactivate both NVRAMs that belong to the same NVRAM sled.
To deactivate an SSD from the VAST CLI, use the ssd deactivate command.
To activate an SSD from the VAST CLI, use the ssd activate command.
To deactivate an NVRAM from the VAST CLI, use the nvram deactivate command.
To activate an NVRAM from the VAST CLI, use the nvram activate command.
To deactivate a slot, use the carrier deactivate command.
To activate a slot, use the carrier activate command.
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