Cyber Resiliency Rating
The SANsymphony Cyber Resiliency Rating is a crucial feature designed to enhance the robustness and resilience of virtual disks in a SANsymphony environment. This feature provides a dynamic rating that reflects the cyber resiliency and health of the system, helping users monitor and manage virtual disks more effectively.
Cyber Resiliency Mode
In a typical setup, involving 2 or more servers in a group, the system operates with a default server locality and by default, the Cyber Resiliency Mode is disabled.
Create and assign server locality for all servers before enabling Cyber Resiliency Mode for a server group. This will only be necessary when upgrading from an older PSP version to the DataCore SANsymphony 10.0 PSP19 or higher as the older versions did not have server locality or were not configured. On a new installation of DataCore SANsymphony PSP19 or higher, the system automatically creates and assigns a default server locality for each server. Users can also create additional localities and the locality of each server can be changed as necessary.
Click the Cyber Resiliency Mode Enabled checkbox to enable Cyber Resiliency Mode. Maximum resiliency requires 3 servers in a group at 3 different locations.
Once the Cyber Resiliency Mode is enabled, users can assess and view the Cyber Resiliency Rating for each virtual disk. This rating helps gauge the resilience of the virtual disk based on several factors, including server locality and system health. The Cyber Resiliency Mode can be toggled on or off during the creation of a virtual disk, offering flexibility to enable it as needed.
Also, when you enable Cyber Resiliency Mode, a new Cyber Resiliency column appears in the Virtual Disks page. This column provides a rating that indicates how resilient each virtual disk is.
For an optimal Cyber Resiliency Rating, it's recommended to have a 3-way server group configuration with server groups at different localities.
The Cyber Resiliency rating is dynamic and will vary depending on the server localities and the overall health of the system. The system’s health is closely monitored, and any changes in the server locality can impact the resilience rating.
In the Creating Virtual Disks page, there is an option to hide and ignore the Cyber Resiliency rating. This can be done by selecting Ignore Cyber Resiliency Rating.
When the Cyber Resiliency Mode is disabled at the server group level, the rating for all virtual disks is hidden or ignored. Re-enabling the Cyber Resiliency Mode will maintain the ignored status of each virtual disk and reactivate the rating for each virtual disk. This process must be carried out for each virtual disk.
When a virtual disk is identified as unhealthy and requires immediate attention, the Cyber Resiliency rating change to reflect this critical status. The star ratings associated with the virtual disk will turn red and decreases the rating. However, the star will turn grey if there is no resiliency left signifying a loss of resiliency. An info icon will appear next to the rating, providing detailed information about why the rating has changed. This color change serves as an immediate alert, helping users quickly identify which virtual disks are at risk and need further investigation or intervention.
This feature is an essential tool to maintain the health of the storage environment, providing real-time feedback and actionable insights into virtual disk performance and resilience.
Cyber Resiliency Star Rating
The table below outlines the Cyber Resiliency Star Rating for different virtual disk configurations under various conditions. The resilience of each configuration is represented by a star rating.
| Disk Configuration | Healthy State | Loss of Parent* | Loss of Parent* + CDP/Replication | Loss of Mirror* | Loss of Mirror* + CDP/Replication | Loss of Child** | Loss of Child** + CDP/Replication |
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| Single vDisk |
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| Dual vDisk |
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| 2-way Mirror vDisk, single location |
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| 2-way Mirror vDisk, single location + CDP/Replication |
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| 2-way Mirror vDisk, dual location |
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| 2-way Mirror vDisk, dual location + CDP/Replication |
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| 3-way Mirror vDisk, single location |
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| 3-way Mirror vDisk, single location + CDP/Replication |
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| 3-way Mirror vDisk, dual location |
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| 3-way Mirror vDisk, dual location + CDP/Replication |
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| 3-way Mirror vDisk, triple location |
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| 3-way Mirror vDisk, triple location + CDP/Replication |
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* - In the case of 3-way mirrors, the loss of either the Parent or Mirror constitutes a transient self-healing condition, resulting in the promotion of the Child.
** - In the case of 3-way mirrors, a Loss of Child may occur automatically following the unexpected loss of either the Parent or Mirror, leading to the promotion of the Child.