EMC Celerra Command Reference Manual page 286

The server Commands
286
Celerra Network Server Command Reference Manual
sv4crc
The System V release 4 cpio with file crc checksums. The default
blocksize for this format is 5120 bytes. Inode and device
information about a file (used for detecting file hard links by this
format) which may be truncated by this format is detected by
server_archive and is repaired.
tar
The old BSD tar format as found in BSD4.3. The default blocksize
for this format is 10240 bytes. pathnames stored by this format
must be 100 characters or less in length. Only regular files, hard
links, soft links, and directories will be archived (other file system
types are not supported).
ustar
The extended tar interchange format specified in the -p1003.2
standard. The default blocksize for this format is 10,240 bytes.
Note: Pathnames stored by this format must be 250 characters or less in
length (150 for basename and 100 for <file_name>).
emctar
This format is not compatible with -p1003.2 standard. It allows
archiving to a file greater than 8G Bytes. Pathnames stored by this
format are limited to 3070 characters. The other features of this
format are the same as ustar.
server_archive detects and reports any file that it is unable to store or
extract as the result of any specific archive format restrictions. The
individual archive formats may impose additional restrictions on
use.
Note: Typical archive format restrictions include (but are not limited to) file
pathname length, file size, link pathname length, and the type of the file.
-B bytes
Limits the number of bytes written to a single archive volume to
bytes. The bytes limit can end with m, k, or b to specify multiplication
by 1048576 (1M), 1024 (1K) or 512, respectively. A pair of bytes limits
can be separated by x to indicate a product.
Note: The limit size will be rounded up to the nearest block size.