Compaq FTAM Responder Support of | |
ISO FTAM Functions |
|
strings may require you to increase the value of the
Σ((ZLEN)i )+ ((26 + PAD) * NS) <= 25600 bytes i=0
where
NS | = number of character strings |
ZLEN | = length in bytes of a given character string |
PAD | = pad byte following string; if string length is even, |
| PAD = 0; otherwise, PAD = 1 |
26= maximum
When the responder retrieves data from the VFS in response to a read request, it automatically packages it into PDUs small enough to fit into its buffer. Therefore, no similar adjustments are necessary on read requests.
The formula for calculating the size of the encoded data is given below. This formula applies only to PDUs that contain primitive strings; PDUs containing constructed strings have additional overhead. As mentioned above, the encoded data limit is 16 KB.
SIGMA((ZLEN)i )+ ((TAG + LEN) * NS) <= 16384 bytes (16 KB) i=0
where
NS | = number of character strings |
ZLEN | = length in bytes of a given character string |
TAG | = number of bytes used to encode the data tag |
LEN | = number of bytes used to encode length of string |
Note. When the Compaq responder encodes data, the maximum
File-Attribute Mappings
The following subsection maps FTAM virtual filestore file attributes to specific Guardian and NonStop SQL file attributes. File attributes provide information for various aspects of a file, such as file name, file size, date and time of file creation, and so on.
Kernel Group File Attributes
Every FTAM implementation must fully support kernel file attributes. The kernel group includes the filename,
