Data storage management for sequentially written media

A computer-implemented method comprising:

• tracking deletion of sequentially written data in a first storage zone;
• and
• at a time after the tracked deletion satisfies one or more conditions:
• moving at least a portion of data stored on the first storage zone to a second storage zone, wherein the first storage zone and the second storage zone are respectively coincident with a first storage device and a second storage device;
• verifying the portion of data for integrity using verification values associated with the portion;
• and
• as a result of the verification values indicating that at least a subset of the portion is corrupted, at least generating information related to the corrupted subset.

A data storage system, comprising:

• one or more processors;
• and
• memory, including instructions executable by the one or more processors to cause the data storage system to at least:
• monitor a quantity of deleted subsets of data stored on a first data storage media upon which data are written sequentially;
• and
• when the quantity of deleted subsets reaches a predetermined level, at least:
• transfer the data from the first data storage media to a second data storage media such that the deleted subsets of data are omitted during the transfer;
• confirm, by at least analyzing integrity information associated with the data, that the data are correctly transferred;
• and
• when the analysis of the integrity information indicates that at least a portion of the data was transferred incorrectly, at least generate information relating to the incorrectly transferred data.

One or more non-transitory computer-readable storage media having collectively stored thereon executable instructions that, as a result of execution by one or more processors of a computing resource provider's computer system, cause the computer system to at least:

• determine if data deletion activity on a first append-optimized data storage zone marked as deleted has reached a defined threshold;
• at a time after determining that the data deletion activity has reached the defined threshold, initiate compaction of data located in data locations of the first append-optimized data storage zone by at least initiating propagation of the data located in the data locations that are not marked as deleted to a second append-optimized data storage zone;
• analyze at least integrity information associated with the data to determine whether any portion of the data is corrupted, wherein the integrity information is analyzed at least partially during the propagation of the data;
• and
• as a result of a determination that at least one portion of the data is corrupted, reconstitute the at least one portion.