Tom, This was 64x4Gb FICON Channels running from a z9-708. We stopped at 385K IOPS because we only had 4xSAP and they ran out of puff before the USP-V. We got roughly the same result with 32x4GB FICON except response time was 0.8ms.
The box had 256GB of cache and 1024 drives installed in RAID-5 7D+1P Array Groups. I always thought 135K SSCH/sec at 100% read misses and 9ms response time was a pretty good number also. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of > Thomas H Puddicombe > Sent: Tuesday, August 03, 2010 5:55 AM > To: [email protected] > Subject: Re: [IBM-MAIN] share mainframe disk experience > > I agree - 400,000 SSCH/sec @ .7ms is fast. Curious as to the > configuration of both the channel subsystem and the USP-V. > > Tom Puddicombe > Mainframe Performance & Capacity Planning > CSC > > 71 Deerfield Rd, Meriden, CT 06450 > ITIS | (860) 428-3252 | [email protected] | www.csc.com > > This is a PRIVATE message. If you are not the intended recipient, please > delete without copying and kindly advise us by e-mail of the mistake in > delivery. > NOTE: Regardless of content, this e-mail shall not operate to bind CSC to > any order or other contract unless pursuant to explicit written agreement > or government initiative expressly permitting the use of e-mail for such > purpose. > > > > From: > Ron Hawkins <[email protected]> > To: > [email protected] > Date: > 08/03/2010 03:14 AM > Subject: > Re: share mainframe disk experience > > > > Brian, > > I'll agree with this to some extent if all you want to do is write a file, > read and update it a few times, and then delete it. > > However when it comes to Business Continuance, Interoperability, > Virtualization, and other not so traditional features I don't agree that > one > can just go out and by 'NO-NAME' generic mainframe DASD, plug it in and > expect it to automatically meet all your needs. This where each vendor has > strengths and weaknesses that may or may not be relevant to you companies > not-so-traditional DASD requirements. > > Old Sharks are very fast? I have some difficulty with that one. A USP-V > doing nearly 400,000 SSCH/sec with 0.7ms response time is what I call > fast, > and that's without zHPF. > > Ron > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of > > Brian Westerman > > Sent: Monday, August 02, 2010 11:23 PM > > To: [email protected] > > Subject: Re: [IBM-MAIN] share mainframe disk experience > > > > I hate to admit it, but Ted is absolutely right. > > > > Most (I want to say all, but just can't commit to it:) vendors units are > > very reliable, and even older RVAs, like IBM Shark are very reliable and > now > > are very reasonably priced. > > > > Mostly what you get now is increased speed and capacity with a smaller > > footprint and less energy usage, but even the old Sharks are VERY fast. > > > > Unless you have some mission critical stuff, or applications that have > > requirements that are far above what the older hardware can handle, you > can > > end up saving upwards of 90% of the cost of a comparable (and faster) > new > > unit. If you need the extra features, then by all means, buy it. If > you > > don't then why spend money you don't have to? > > > > Brian > > > > ---------------------------------------------------------------------- > > 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 > > ---------------------------------------------------------------------- > 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 > > > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
