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| **Pro** | Free version of ESXi is supported. | | | **Pro** | Free version of ESXi is supported. | | ||
| **Con** | Slower backup speed for subsequent backup compared to VDDK backup, as a result of having the entire VM backed up every time regardless of the actual used size. | | | **Con** | Slower backup speed for subsequent backup compared to VDDK backup, as a result of having the entire VM backed up every time regardless of the actual used size. | | ||
+ | |||
+ | ==== Comparison between VDDK and Non-VDDK Modes ==== | ||
+ | ^ ^ VDDK (CBT) ^ Non-VDDK ^ | ||
+ | | **Full Backup** | Used data size of guest | Provisioned data size of guest | | ||
+ | | **Incremental / Differential** | Generated by VMware Host using CBT | Generated by AhsayOBM on the staging machine using in-file delta | | ||
+ | | **Storage Size** | Uses less storage quota | Uses more storage quota | | ||
+ | | **Storage Cost** | Lower storage cost | Higher storage cost | | ||
+ | | **Backup Speed** | Faster backup speed due to smaller data size | Slower backup speed due to larger data size | | ||
+ | | **Run Direct Support** | Yes | No | | ||
+ | | **Restore from VDDK to VMDK format** | Yes | No | | ||
+ | | **Granular Restore** | Yes | Yes | | ||
+ | | **AhsayOBM on Windows Platform** | Yes | Yes | | ||
+ | | **AhsayOBM on Non Windows Platform** | No | Yes | | ||
+ | |||
+ | ===== Requirements ===== | ||
+ | |||
+ | ==== Hardware Requirement ==== | ||
+ | * Refer to this [[public:8000_faq:ahsay_hardware_requirement_list_hrl_for_version_8.1_or_above|Hardware Requirement List]] for the list of hardware requirements for AhsayOBM. | ||
+ | |||
+ | ==== Software Requirement ==== | ||
+ | * Refer to this [[public:8062_faq:ahsay_scl_for_granular_and_opendirect_restore_v8|Software Compatibility List for Granular Restore]] in VMware backup sets. | ||
+ | |||
+ | ==== Antivirus Exclusion Requirement ==== | ||
+ | * To optimize performance of AhsayOBM on Windows, and to avoid conflict with your antivirus software, refer to [[public:8014_faq:suggestion_on_antivirus_exclusions|this article]] for the list of processes and directory paths that should be added to all antivirus software white-list / exclusion list. | ||
===== Documentation ===== | ===== Documentation ===== |