Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base


SRDF – Symmetrix remote data facility

    Introduction: Symmetrix Remote Data Facility (SRDF) family of software is the industry’s most powerful suite of remote storage replication solutions for disaster recovery and business continuity designed by EMC. SRDF transparently remotely mirrors production or primary (source) site data to a secondary (target) site....


Solaris SVM : Disk replacement for Systems With Internal FCAL Drives Under SVM (V280R, V480, V490, V880, V890):

Beginning with Solaris 9 Operating System (OS), Solaris Volume Manager (SVM) software uses a new feature called Device-ID (or DevID), which identifies each disk not only by it’s c#t#d# name, but also by a unique ID generated by the disk’s World Wide Number (WWN), or serial...


‘pr’: Paginate or columnate files for printing

‘pr’ writes each FILE (‘-‘ means standard input), or standard input if none are given, to standard output, paginating and optionally outputting in multicolumn format; optionally merges all FILEs, printing all in parallel, one per column.  Synopsis:      pr [OPTION]… [FILE]… By default, a 5-line header...

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