To meet the given storage requirements, the Premium storage tier should be recommended. Here's why:
Firstly, it's important to know what each requirement means:
1. SMB is the Server Message Block Protocol, which provides shared access to files and printers at the network level. Azure Files supports SMB.
2. IOPS stands for Input/Output Operations Per Second. It is a common performance measurement used to benchmark computer storage devices like hard disk drives, solid state drives, and storage area networks.
3. 2-GBps of bandwidth refers to the data transfer rate, the maximum amount of data that can be transferred per second.
Now, considering the requirements:
Azure Files has two performance tiers - Premium and Standard.
1. The Standard tier is often used for general-purpose file shares, but it has limitations on IOPS and bandwidth.
2. The Premium tier on the other hand, is a high-performance tier that is suitable for IO-intensive workloads. This tier uses solid-state drives (SSD) for storage and provides consistent high performance.
The Premium tier supports up to 100,000 IOPS which exceeds the requirement of 90,000 IOPS. It also provides multiple GB/s of bandwidth which meets the requirement of 2-GBps of bandwidth.
Therefore, the Premium storage tier fulfills all the requirements of supporting SMB, providing 90,000 IOPS and 2-GBps of bandwidth, and hence would be the recommended storage tier.
Remember that while the Premium tier might have a higher cost than the Standard tier, it is the least costly option that meets all the given storage requirements.
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