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Editorial Team
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Asked: 2026-05-21T00:24:15+00:00

MySQL .ibd file has grown to more than 3 TB and my RedHat box

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MySQL .ibd file has grown to more than 3 TB and my RedHat box can no longer support adding more disk spaces.

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  • How can I scale database storage ?
  • What best practices can resolve this issue ?

Note:I use one .ibdfile per table and have a couple of huge tables.

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1 Answer

  1. Editorial Team

    If you are just storing data, your data mount for /var/lib/mysql should be 5TB SATA drives. If your application is write heavy, your data mount for /var/lib/mysql should be 5TB SAS drives RAID10.

    If upgrading disks is out of the question, you need to do periodic table defragmentation in one of three(3) ways:

    1. ALTER TABLE myinnodbtable ENGINE=InnoDB;
    2. OPTIMIZE TABLE myinnodbtable;
    3. Customize the defragmentation the table

    You can perform this defragmentation manually as follows:

    CREATE TABLE myinnodbtemptable LIKE myinnodbtable;
INSERT INTO myinnodbtemptable SELECT * FROM myinnodbtable;
ALTER TABLE myinnodbtable RENAME myinnodbtableold;
ALTER TABLE myinnodbtemptable RENAME myinnodbtable;
DROP TABLE myinnodbtableold;

    Option 3 does not work if the InnoDB table has constraints because constraints will disappear.

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