The second round of QA testing was designed to again test the RDE deposit and release procedures, but under conditions simulating a large registrar-depositor (i.e., a registrar managing more than one million gTLD registrations). As noted above, under the provisions of the RDE specifications, registrars are required to split CSV files to be no larger than one gigabyte or one million rows.To complete the RDE Stress Test, ICANN manipulated the IANA Registrar data to achieve a file size of approximately 3 gigabytes. The files were then split, compressed, encrypted, and uploaded to Iron Mountain in accordance with the RDE specifications. As in the RDE Process Test, Iron Mountain decrypted, uncompressed, and performed checksum validation of the data, and then destroyed the unencrypted data and stored the original encrypted files. Similarly, as before, ICANN followed the agreed release procedures and the re-encrypted files were released to ICANN by sFTP and overnight courier within one business day of the release demand.Although the RDE Stress Test concluded with a generally successful result, staff observed an irregularity in the process that made the result appear somewhat unreliable. Specifically, staff found that when the simulated registration data had been prepared for uploading, it compressed uncharacteristically effectively. The simulated large registrar data compressed at a rate of approximately 7,000:1. In comparison, registrars who had begun their own preparation and testing for the RDE program experienced a data compression rate of 13:1. The redundant nature of the simulated registration data appeared to have contributed to an abnormally high compression rate, so ICANN determined that the technical procedures (the file preparation, uploading, and release) involved in the RDE Stress Test should be repeated with more conservative compression rates.
In the second round of stress testing, simulated registrar data was created with greater randomization. This allowed for more realistic data compression. The uploaded files the second time were considerably larger at 349 MB each (versus 142 KB in the prior stress test), reflecting a compression rate of approximately 3:1.
By re-running the RDE Stress Test, ICANN and Iron Mountain were able to assess both the viability of the RDE specifications and the capacity of ICANN and Iron Mountain to effect a release of data for a large registrar. Through the repeated test, ICANN observed an upload rate of 700 KB/second, which correlates to a total upload time of around 20 minutes. Iron Mountain reported that the processing time for the uploaded data (i.e., the time needed to decrypt, uncompress, and verify the deposit) was under two minutes and thirty seconds. ICANN was able to download the data by sFTP in 15 minutes (950 KB/second) and complete decryption and decompression in under two minutes. Checksum verification proved the data to be identical. Given these results, the RDE Process and Stress Tests were deemed to have been satisfactorily concluded.
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