The difference between BBU module and power module

wissal · Created Oct 24, 2021 18:21:41

Hello,

The BBU is a battery module. If the device is suddenly powered off, it can provide emergency power to save the Cache. The power module is used for normal power supply.

A Power/Fan-BBU module consists of a power module and a BBU. Both AC and DC power modules are supported and they allow the controller enclosure to work correctly in maximum power consumption mode. BBUs provide enough power to ensure that any data in flight is de-staged to the vault area in the event of a power failure. If a BBU is faulty, it can be isolated without affecting the normal running of the storage system. If a power failure occurs, BBUs ensure that the storage system writes cached data to the built-in disks of the controllers, preventing data loss. After the external power supply resumes, the driver reads data from the built-in disks of the controllers to the cache. In a system using the lithium batteries, the battery capacity is updated and detected by charging and discharging the batteries. In this way, the problems can be detected in advance that the battery capacity attenuates, the batteries fail to meet the power backup requirements of the system, and thus the data backup fails when the batteries are not used for a long time. Then, the reliability of data protection upon the system power failure can be improved.

Thanks

user_3134129 · Created Oct 24, 2021 18:19:46

PM - power module
BBU - backup battery unit
BBU and PM work together to guarantee the safety of data in storage systems, for example
BBU is an example of an internal UPS

wissal · Created Oct 24, 2021 18:21:41

Hello,

The BBU is a battery module. If the device is suddenly powered off, it can provide emergency power to save the Cache. The power module is used for normal power supply.

A Power/Fan-BBU module consists of a power module and a BBU. Both AC and DC power modules are supported and they allow the controller enclosure to work correctly in maximum power consumption mode. BBUs provide enough power to ensure that any data in flight is de-staged to the vault area in the event of a power failure. If a BBU is faulty, it can be isolated without affecting the normal running of the storage system. If a power failure occurs, BBUs ensure that the storage system writes cached data to the built-in disks of the controllers, preventing data loss. After the external power supply resumes, the driver reads data from the built-in disks of the controllers to the cache. In a system using the lithium batteries, the battery capacity is updated and detected by charging and discharging the batteries. In this way, the problems can be detected in advance that the battery capacity attenuates, the batteries fail to meet the power backup requirements of the system, and thus the data backup fails when the batteries are not used for a long time. Then, the reliability of data protection upon the system power failure can be improved.

Thanks

Vlada85 · Created Oct 24, 2021 19:02:33

A Power/Fan-BBU module consists of a power module and a BBU. Both AC and DC power modules are supported and they allow the controller enclosure to work correctly in maximum power consumption mode. BBUs provide enough power to ensure that any data in flight is de-staged to the vault area in the event of a power failure. If a BBU is faulty, it can be isolated without affecting the normal running of the storage system. If a power failure occurs, BBUs ensure that the storage system writes cached data to the built-in disks of the controllers, preventing data loss. After the external power supply resumes, the driver reads data from the built-in disks of the controllers to the cache. In a system using the lithium batteries, the battery capacity is updated and detected by charging and discharging the batteries. In this way, the problems can be detected in advance that the battery capacity attenuates, the batteries fail to meet the power backup requirements of the system, and thus the data backup fails when the batteries are not used for a long time. Then, the reliability of data protection upon the system power failure can be improved.

For more information, you can see these links:

http://support-it.huawei.com/docs/en-us/oceanstor-doradov3-v300r001/guide/en-us_topic_0112260225.html

https://support-it.huawei.com/docs/en-us/dorado-v6/product-description-m/prod_desc_2u_ctr_5000sas_bbu.html

Unicef · Created Oct 25, 2021 01:18:34

The difference between BBU module and power module-4244963-1

nochhie · Created Oct 29, 2021 07:05:04

Good

Anno7 · Created Nov 11, 2021 05:23:34

good

The difference between BBU module and power module

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The difference between BBU module and power module

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