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Relaxed Durability (Level 2)

When using ALTIBASE HDB Relaxed durability setting, on a system or a database crash, recovery point is the last checkpoint. This level is suitable for use in business environments in which database durability is not critical, but fast processing of transactions is required. Businesses that can tolerate a certain level of data loss may want to take advantage of this level for high performance transactions.

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Enhanced Durability (Level 3)

When using ALTIBASE HDB Enhanced durability setting, on database crash there is no data loss, and the recovery point is the last point where OS syncs kernel buffer to disk. In other words, even if the database crashes, durability is still ensured by the OS. This level is suitable for environments characterized by low rates of failures such as OS crashes, hardware faults and power outages. Businesses that can tolerate a certain level of data loss may want to take advantage of this level. This is the default setting for ALTIBASE HDB.

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Strict Durability (Level 5)

When using ALTIBASE HDB Strict durability setting, since each transaction committed only when written to disk, there will be no data loss with either system or database crash, This level is suitable for use in business environments in which data durability is more important than faster performance. Businesses that cannot tolerate any kinds of data loss should use this level.

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