Start/notes.ini Parameters/DAOS_MinObjSize

DAOS_MinObjSize

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Parameter: DAOS_MinObjSize
Short description: Minimum size (in bytes) above which a file attachment is externalized to DAOS.

Profile

Parameter
DAOS_MinObjSize
Category
DAOS
Component
Server
Available since
8.5
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5
GUI equivalent
Server document
Possible values
Bytes, typically 64000 (64 KB)

Description

DAOS_MinObjSize defines the size (in bytes) above which a file attachment is externalized to DAOS. Attachments below this value remain in the NSF because the overhead of DAOS management would not otherwise be justified.

Example configuration

DAOS_MinObjSize=64000

Notes & pitfalls

  • The default value of 64,000 bytes (∼ 64 KB) is a good compromise for most environments.
  • Very low values massively increase the number of small *.nlo files – bad for backup and file system.
  • Very high values (several MB) significantly reduce the benefit of DAOS.
  • The value takes effect on the next compact -c for DAOS-enabled databases.