write operations between cache invalidates. The default value is 20.
HPSS_API_HOSTNAME specifies the hostname to be used for TCP/IP listen ports c reated by the 
Client API. The default value is HPSS_HOST. This value can have a significant impact on data transf er 
performance for data transfers that are handled by the Client API (i.e., those that  use the hpss_Read and 
hpss_Write interfaces).  The default is HPSS_HOST.
HPSS_API_LIMITED_RETRIES specifies the number of retry attempts before a limited retry error  
operation fails. Currently, no operations are defined as "limited retry error  operations". The default value 
is 1.
HPSS_API_MAX_CONN specifies the number of connections that are supported by the  Client API 
within a single client process. If HPSS_API_MAX_CONN is set to zero, the number of connections is 
equal to the default supported by the HPSS connection management software - currently 20. If 
HPSS_API_MAX_CONN is nonzero, it is the number of connections to be used.
HPSS_API_RETRIES specifies the number of retries to attempt when an operation fail s. Currently this 
class of operation includes library initialization and communications failures.  A value of zero indicates 
that no retries are to be performed (i.e., the operation will be attempted once ), and value of -1 indicates 
that the operation will be retried until successful. The default  value is 4 (meaning the operation will be 
attempted up to five times).
HPSS_API_RETRY_STAGE_INP specifies whether retries are attempted on attempts  to open files in a 
Class of Service that is configured for background staging on open. A numeric, non-zero value (the 
default) indicates that opens which would return -EINPROGRESS to indicate  that the file is being 
staged will be retried (using HPSS_API_RETRIES and HPSS_API_BUSY_DELAY to control the 
number and timing of retries), while a value of zero indicates that the -EINPROGRESS return  code will 
be returned to the client. The default value is "1".
HPSS_API_REUSE_CONNECTIONS specifies whether TCP/IP connections are to be left open as 
long as a file is open or are to be closed after each read or write request.  A numeric, non-zero value will 
cause connections to remain open, while a value of zero will cause connections to be  closed after each 
file access. The default value is zero.
HPSS_API_RPC_PROT_LEVEL specifies the RPC protection level.  Valid values  are “connect”, 
“packet”, “packet integrity”, and “packet privacy”.  The default is HPSS_RPC_PROT_LEVEL.  
HPSS_API_SAN_3P specifies whether to enable SAN3P transfers.  Valid values  are “on” an d “off”. 
The default is on.
HPSS_API_SITE_NAME specifies the site name to be used when initializing the HPSS secur ity 
services. The default value is HPSS_SITE_NAME .  
HPSS_API_TOTAL_DELAY specifies the number of seconds to continue retrying requests. A value  of 
zero indicates that no there is no time limit. The default value is zero.
HPSS_API_USE_PORT_RANGE specifies whether the HPSS Mover(s) should use the configured por t 
range when making TCP/IP connections for read and write requests. A numeric, non- zero value will 
cause Movers to use the port range, while a value of zero will cause Movers to allow the  operating 
system to select the port number. The default value is zero.
HPSS_KRB5_KEYTAB_FILE specifies the name of the file containing the  se curity keys necessary for 
successfully initializing the Client API for Kerberos authentication. The def ault is auth_keytab:/var/hpss/
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