While master copies are only deleted on delivery to a sink, secondary copies can also be erased if buffers are full.
Thus, COOP maintains two LRU lists with the primary and the secondary copies, respectively, considering that the documents stored in the secondary copy list must be deleted first.
Unlike earlier observations of lower frequency of secondary copy number changes in RB1+/+MYCNA tumors [22], Ewens et al. found no significant difference in the number of copies of KIF14, DEK, and CDH11 between MYCNA and MYCN-low tumors.
As the replacement policy, COOP proposes to divide the documents into primary and secondary copies.
The message copy delivered to the first sensor is known as the master copy, while the rest are secondary copies.
The primary and secondary copies were stored at −80°C.
Group III is composed of sequences from phylogenetically distant organisms, many of which are obligate anaerobes (e.g., Clostridium species, sulfate-reducers, and methanogens) (Zehr et al., 2003) as well as nifH from some Cyanobacteria (e.g., Microcoleus chthonoplastes PCC7420 and Anabaena variabillis ATCC 29413, which have secondary copies of nifH; Figure 6, shown in green in group III).
The system supports a secondary purely multi-copy mode for use in such situations.
The second option is to run a secondary namenode which keeps a copy of the merged namespace image to be used in case of namenode failure.
Since IS 6110-RFLP genotyping is less reliable for isolates with fewer than six copies of the IS 6110 insertion sequence[ 15], we also used spoligotyping as a secondary method to characterize these "low-copy" isolates[ 16].
