La bande passante logique et la bande passante du lien de réplication ne sont pas identiques

publié il y a  2019-11-4 10:11:50Dernière réponse nov. 04, 2019 18:41:28 49 1 0 0
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Bonjour équipe

Que puis-je faire si la bande passante logique et la bande passante du lien de réplication ne sont pas identiques dans la réplication distante asynchrone?

Je vous remercie

 lien de Replication de Bandepassante  Bande passante logique 

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Voltaire
publié il y a 2019-11-4 18:41:28 Utile(1) Utile(1)
Bonjour,

Data replication involves following three conditions based on the types of primary and secondary LUNs:

The primary LUN is a thin LUN not configured with SmartDedupe and SmartCompression and the secondary LUN is a thin LUN with no space allocated. During initial synchronization, data for which space is not allocated on the primary LUN will not be synchronized to the secondary LUN.

The primary LUN is a thick LUN or a thin LUN configured with SmartDedupe and SmartCompression and the secondary LUN is a thin LUN with no space allocated. During initial synchronization, data in the primary LUN is read in sequence and the consecutive 64 KB all-zero data will not be synchronized to the secondary LUN.

In other scenarios, during initial synchronization, the system reads data from the primary LUN in sequence. The 64 KB all-zero data is compressed to 4 KB (16:1), synchronized to the secondary LUN, decompressed to 64 KB, and then written to the secondary LUN. Other data is written to the secondary LUN in sequence.

The amount of data to be transmitted is reduced to fully tap into bandwidth resources. As a result, the logical bandwidth and the replication link bandwidth are not the same.

In addition, the logical bandwidth of asynchronous remote replication varies greatly from the replication link bandwidth after link compression is enabled and the performance of asynchronous remote replication drops sharply. Inline compression automatically compresses data when data is sent through links and decompresses data when the secondary storage system receives the data. Inline compression also reduces the amount of data transferred over a network.

Merci
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  • Standard:

I%20would%20like%20to%20share%20with%20you%20my%20experience%2C%20I'm%20telecommunications%20engineer%2C%20currently%20senior%20project%20manager%20at%20an%20operator%2C%20partner%20of%20Huawei%2C%20in%20the%20radio%20access%20network%20department%2C%20for%2020%20years%20I%20managed%20several%20types%20of%20projects%2C%20for%20the%20different%20nodes%20of%20the%20network.%3Cbr%2F%3EAt%20the%20same%20time%2C%20I%20give%20courses%20in%20universities%20as%20a%20temporary%2C%20to%20bring%20the%20operational%20side%20of%20telecommunication%20technologies%20to%20students%2C%20for%20network%20supervision%20systems%2C%20mobile%20radio%20networks%20and%20access%20networks%20etc.
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Voltaire
Voltaire publié il y a 2019-11-4 18:41:28 Utile(1) Utile(1)
Bonjour,

Data replication involves following three conditions based on the types of primary and secondary LUNs:

The primary LUN is a thin LUN not configured with SmartDedupe and SmartCompression and the secondary LUN is a thin LUN with no space allocated. During initial synchronization, data for which space is not allocated on the primary LUN will not be synchronized to the secondary LUN.

The primary LUN is a thick LUN or a thin LUN configured with SmartDedupe and SmartCompression and the secondary LUN is a thin LUN with no space allocated. During initial synchronization, data in the primary LUN is read in sequence and the consecutive 64 KB all-zero data will not be synchronized to the secondary LUN.

In other scenarios, during initial synchronization, the system reads data from the primary LUN in sequence. The 64 KB all-zero data is compressed to 4 KB (16:1), synchronized to the secondary LUN, decompressed to 64 KB, and then written to the secondary LUN. Other data is written to the secondary LUN in sequence.

The amount of data to be transmitted is reduced to fully tap into bandwidth resources. As a result, the logical bandwidth and the replication link bandwidth are not the same.

In addition, the logical bandwidth of asynchronous remote replication varies greatly from the replication link bandwidth after link compression is enabled and the performance of asynchronous remote replication drops sharply. Inline compression automatically compresses data when data is sent through links and decompresses data when the secondary storage system receives the data. Inline compression also reduces the amount of data transferred over a network.

Merci
  • x
  • Standard:

I%20would%20like%20to%20share%20with%20you%20my%20experience%2C%20I'm%20telecommunications%20engineer%2C%20currently%20senior%20project%20manager%20at%20an%20operator%2C%20partner%20of%20Huawei%2C%20in%20the%20radio%20access%20network%20department%2C%20for%2020%20years%20I%20managed%20several%20types%20of%20projects%2C%20for%20the%20different%20nodes%20of%20the%20network.%3Cbr%2F%3EAt%20the%20same%20time%2C%20I%20give%20courses%20in%20universities%20as%20a%20temporary%2C%20to%20bring%20the%20operational%20side%20of%20telecommunication%20technologies%20to%20students%2C%20for%20network%20supervision%20systems%2C%20mobile%20radio%20networks%20and%20access%20networks%20etc.

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