I thought the compression took place in the control unit, so the full amount of data went over the escon channel, and was compressed by the hardware before writing or reading. How does that triple the effective tape rate to 27MB/sec. over the escon channel?
Over ESCON it does not, which is my point. The effective MAX data rate of the tape is 27MB/sec with average compression, but it is throttled by the speed of the channel, so FICON channels are a better match for 3590s.
-- Bruce A. Black Senior Software Developer for FDR Innovation Data Processing 973-890-7300 personal: [EMAIL PROTECTED] sales info: [EMAIL PROTECTED] tech support: [EMAIL PROTECTED] web: www.innovationdp.fdr.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
