Question

the marketing group in your organization is planning a new campaign that will involve extensive use of online videos. development of these videos will consume a significant amount of storage on the windows server that you manage. to meet their needs, you plan to implement a new storage pool on the server using the following parameters: three-way mirroring will be used for redundancy. write-back caching will be used to optimize performance. tiering will be used to ensure that the most important files are stored on the fastest storage devices. what is the minimum number of ssd drives that should be used in the pool?

Answer 1

The minimum number of SSD drives that should be used in the pool is 5.

Since the requirements is,

Three-way mirroring

Write-back caching

Tiering

Write-back caching and tiering can we eliminated because same SSD can perform mirroring and also those function.

Three-way mirroring is to ensure your data is safe if data loss occur in main storage, so technically you have three same data or three copies data.

Normally without mirroring you only have one SSD and the data loss you loss all data. In, two-way mirroring your copies the data from main SSD to another one, so if one loss you can restore the data from another SSD.

Three-way mirroring is your copies data from two-way mirroring and main to another two-way mirroring, so even two SSD is loss a data, the rest which is three SSD can perform two-way mirroring and restore the data.

So, you need at least 5 SSD to perform three-way mirroring.

Learn more about SSD here:

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