Fred, I meant to say that the other storage controller is probably virtualized behind the USP-VM.
Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of > Ron Hawkins > Sent: Saturday, July 03, 2010 6:10 PM > To: [email protected] > Subject: Re: [IBM-MAIN] Serial Attached SCSI (SAS) disk compared to Fibre > Channel > > Fred, > > Seeing as the USP-VM does not support SAS drives, it is more likely that > they are considering SAS drives that are installed in a HDS or other > vendor's Storage Controller. In that case the performance of IO that goes > past USP-VM cache to the external storage will largely depend on the design > and architecture of that controller, and not just whether it is SAS, FCAL or > SATA. > > Ron > > > -----Original Message----- > > From: IBM Mainframe Discussion List [mailto:[email protected]] On > Behalf Of > > Fred Schmidt > > Sent: Thursday, July 01, 2010 9:13 PM > > To: [email protected] > > Subject: [IBM-MAIN] Serial Attached SCSI (SAS) disk compared to Fibre > Channel > > > > Issued: Error! Unknown document property name. iii > > > > Our organisation is considering Serial Attached SCSI (SAS) disks in a > Hitachi > > USP-VM for our mainframe environment instead of the usual Fibre Channel > disk. > > > > Anyone using SAS disk in the mainframe world? > > > > Any comments regarding performance, throughput? > > > > Any gotcha's? > > > > Regards, > > Fred > > > > > > > > ---------------------------------------------------------------------- > > 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
