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- | ====== Ahsay Upgrade Advisory (#26812) – Critical Issue with AhsayOBM v8 Microsoft Hyper-V backup ====== | ||
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- | We have recently confirmed a critical issue related to virtual machine backups: | ||
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- | * On Hyper-V 2008 R2/2012/2012 R2, due to a bug with the CBT (Change Block Tracking) filter. | ||
- | * On Hyper-V 2016, due to bug in the handling of RCT (Resilient Change Tracking) data. | ||
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- | Because of these issues, the change tracking data is no longer reliable for incremental backups. All Hyper-V virtual machines backups taken using AhsayOBM v8.3.2.11 are no longer restorable. | ||
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- | ===== What are the affected AhsayOBM versions? ===== | ||
- | * AhsayOBM v8.3.2.11 to v8.3.2.139 | ||
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- | ===== What are the affected Hyper-V versions? ===== | ||
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- | * Hyper-V 2008 R2 | ||
- | * Hyper-V 2012 and 2012 R2 | ||
- | * Hyper-V 2016 | ||
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- | ===== What action do I need to take to fix this problem? ===== | ||
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- | Partners are strongly advised to immediately: | ||
- | - Upgrade all affected clients to **AhsayOBM v8.3.6.30 or above**. | ||
- | - After upgrading to **AhsayOBM v8.3.6.30 or above**, if in-file delta is enabled on the backup set. The first backup job run a mandatory differential backup job. | ||
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- | If your current version is not AhsayCBS v8.3.6.30 or above, then upgrade your AhsayCBS to the latest version first. Please refer to these KB article for upgrade instructions: | ||
- | * [[public:8009_faq:how_to_install_the_latest_patch_set_for_ahsaycbs|Windows/Linux/FreeBSD]] | ||
- | * [[public:8026_faq:how_to_install_the_latest_patch_set_for_ahsayubs|AhsayUBS]] | ||
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- | ===== What if my maintenance has already expired? How do I upgrade? ===== | ||
- | **Stop! Do not upgrade** until you contact a member our Sales team [[mailto:sales-kb@ahsay.com|sales-kb@ahsay.com]] for assistance with your maintenance renewal. | ||
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- | ===== What if I require assistance with my AhsayCBS server upgrade? ===== | ||
- | Our professional service team is ready to provide immediate assistance to partners with AhsayCBS v8 upgrades. | ||
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- | Please contact a member our Sales team [[mailto:sales-kb@ahsay.com|sales-kb@ahsay.com]] to obtain a quotation for the AhsayCBS upgrade service. | ||