>On Mon, 14 May 2007 10:30:02 -0500, Jeffrey Deaver ><[EMAIL PROTECTED]> wrote: > >> >> Why even keep >>the RTDs? This stuff is inexpensive enough to keep all the tape data on >>spinning disk and fully mirrored. We're seriously thinking about it. >>Probably works for us better than most, however, since we made a concerted >>effort over the last decade to keep people from using tape. So its mainly >>just HSM and DB images at this point and its under 25TB of data. >> >
An interesting article on this subject: Tape and Disk Costs - What It really Costs to Power the Equipment http://www.clipper.com/research/TCG2007014.pdf >From the article: Key Findings 1. SATA disk system has nearly 26 times higher energy costs than tape system. 2. SATA disk system acquisition costs about 6.5 times the cost of automated tape system. 3. Assuming electrical rates remain same, the cost to acquire, power and cool disk systems for five years is almost 8 times the cost to acquire, power, and cool automated tape systems. 4. The cost to power and cool equipment must be part of the TCO. -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group: G-ITO mailto:[EMAIL PROTECTED] z/OS and OS390 expert at http://searchDataCenter.com/ateExperts/ Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html ---------------------------------------------------------------------- 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
