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Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

Backblaze, Inc.

San Mateo, California

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 29, 2024, relating to the consolidated financial statements of Backblaze, Inc. (the Company) appearing in the Company's Annual Report on Form 10-K for the year ended December 31, 2023.

/s/ BDO USA, P.C.

San Jose, California

May 9, 2024