![Erasure](https://github.com/minio/minio/blob/master/docs/screenshots/erasure-code.jpg?raw=true)

## What is Bit Rot protection?

Bit Rot, also known as data rot or silent data corruption is a data loss issue faced by disk drives today. Data on the drive may silently get corrupted without signaling an error has occurred, making bit rot more dangerous than a permanent hard drive failure.

* <abbr title="Mozilla Developer Network: documentation for developers, written by the Firefox people">MDN</abbr>
* <abbr title="Input/Output: disk reading or writing, network communications.">I/O</abbr>.

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//// tab | Info

"title" attributes of "abbr" elements are translated following some specific instructions.

					}
				} else {
					stopFn(result, nil)
				}
				ri.trackCurrentBucketObject(r.Bucket, result, success, attempts)
				globalBatchJobsMetrics.save(job.ID, ri)
				// persist in-memory state to disk after every 10secs.
				batchLogIf(ctx, ri.updateAfter(ctx, api, 10*time.Second, job))
				if success {
					break
				}
				if delay > 0 {
					time.Sleep(delay + time.Duration(rnd.Float64()*float64(delay)))

*   Fixed an issue with Azure disk mount failures on CoreOS and some other distros ([#54334](https://github.com/kubernetes/kubernetes/pull/54334),[ @andyzhangx](https://github.com/andyzhangx))
*   GRS, RAGRS storage account types are now supported for Azure disks. ([#55931](https://github.com/kubernetes/kubernetes/pull/55931),[ @andyzhangx](https://github.com/andyzhangx))

	    * Note: this fixes some issues with the previous implementation of metrics for disks:

	      * Time duration tracked was of the initial API call, not the entire operation.

	      * Metrics label tuple would have resulted in many independent histograms stored, one for each disk. (Did not aggregate well).

     * @param server the server data containing security information
     * @param path the UNC path to the shared resource
     * @param service the service type (e.g., "A:" for disk share, "LPT1:" for printer)
     * @param andx the next command in the AndX chain, or null
     */
    public SmbComTreeConnectAndX(final CIFSContext ctx, final ServerData server, final String path, final String service,

	dst := make(metaCacheEntries, len(m))
	copy(dst, m)
	return dst
}

type metadataResolutionParams struct {
	dirQuorum int // Number if disks needed for a directory to 'exist'.
	objQuorum int // Number of disks needed for an object to 'exist'.

	// An optimization request only an 'n' amount of versions from xl.meta
	// to avoid resolving all versions to figure out the latest 'version'

	for k, v := range b.cachesRoot {
		tmp := make([]string, len(v))
		copy(tmp, v)
		dst2[k] = tmp
	}

	return dst, dst2
}

// deleteAll will delete all on disk data for ALL caches.
// Deletes are performed concurrently.
func (b *bucketMetacache) deleteAll() {
	ctx := context.Background()

	objAPI := newObjectLayerFn()
	if objAPI == nil {
		return
	}

- Fix azure disk attach failure for disk size bigger than 4TB ([#95463](https://github.com/kubernetes/kubernetes/pull/95463), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]

* fix: retry detach azure disk issue ([#78700](https://github.com/kubernetes/kubernetes/pull/78700), [@andyzhangx](https://github.com/andyzhangx))
    * try to only update vm if detach a non-existing disk when got <200, error> after detach disk operation