2.8Reorganizing open files
Previously, it was only possible to reorganize closed files in pubsets or volumes with SPACEOPT.
As of SPACEOPT V3.0, open files can also be included when reor- ganizing pubsets and reducing file extents.
Please consult the Release Notice SYSFGM.SPACEOPT.030.E for the complete scope of the innovations.
2.9Tape blocks > 32 KB
Block sizes ranging from 32 KB to 256 KB are supported for tape I/O with the BTAM access method for record formats V and U, to allow
The new block size is specified at the
*1 or
Large tape blocks are supported by the products ARCHIVE V7.0B, FDDRL V15.0 and PERCON V2.8
2.10 File encryption
Data encryption fulfills the requirements for the security of critical data, such as protection against physical reading from the disk, protection against unauthorized reading, also with TSOS special rights, protection against unauthorized usage of backup tapes or monitoring the data contents with file transfer connec- tions.
The files are stored on the disk in encrypted form and decrypted in blocks for an authorized access in the system/server. The files are taken over encrypted into backups or during file trans- fers.
Two special commands have been introduced for encrypting and de- crypting a file. An eight character crypto password is defined for each file that is to be encrypted/decrypted. The key for en- cryption/decryption is then derived from this during access.
Working with encrypted files and the crypto password is similar to working with
REMOVE-CRYPTO-PASSWORD.
*1 The
*1 is required for file encryption on S servers.
*1
*1 required for encryption on the
*1 An additional crypto CPU is required on SX150, whereas the
*1 encryption processes run on the X2000 CPU on
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