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
