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Comment: Replaced "file system" with "local system" for HPCDATAMGM-1598.

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You can also use the CLU to create an empty collection. 

The character limit for each metadata value is 2700.

The following table compares the functionality available with each command: 

Command
Data TypeSourcePresignedMultipart
Command Allows You To File Size
Update Metadata
Metadata Extraction1

dm_register_dataobject 

(Using dm_register_dataobject and Updating Data File Metadata via the CLU)

1

Register a new file

and

with metadata

File system (up to 10 GB), Globus, or AWS S3NoYes, if the file is 50 MB or larger

.

or

Update metadata of an existing file.

Up to 2 TB from Globus, AWS S3, or Google Cloud storage

or

Up to 10 GB from local system

Yes

Yes, for
file
local system

dm_register_dataobject_presigned 

(Using dm_register_dataobject_presigned)

1
Register a new file
and
with metadata.
File system (up YesNoNo
Up to 2 GB (recommendation)
)
from local system
No

dm_register_dataobject_multipart 

(Using dm_register_dataobject_multipart)

1
Register a new file
and
with metadata
File systemYesYes, if the file is 50 MB or largerNoNo
.Up to 2 TB from local systemNo

dm_register_collection

(Creating an Empty Collection via the CLU and Updating Collection Metadata via the CLU)

MetadataNA

Register a new collection with metadata.

or

Update metadata for an existing collection.

NA

NA
Yes
NA

dm_register_directory

(Registering Directory Contents from Your

File

Local System via the CLU)

1 collection
Register a new collection from a specified directory (including
subcollections
subdirectories and files)
and
with metadata
File
.Up to 2 TB from local systemYes
Yes, if the file is 50 MB or largerYesYes

Footnote 1: In the Metadata Extraction column, a "Yes" indicates you can extract metadata from the header of TIFF or BMP image files.