Radoslaw, FlashAccess is included with the Resource Manager Software, along with the Remote Console or Storage Navigator software. You need Resource Manager software package to use FlashAccess.
The FlashAccess area of cache is reserved by the CE. We call it DCR area (Dynamic Cache Residency).Once it is reserved you can manage it yourself. The Storage Navigator and Remote Console software have the GUI to do this, and they are fairly intuitive. Using Storage Navigator (or Remote Console on old boxes) you can load whole volumes or specific extents of a volume into the DCR area. These extents can be added and deleted dynamically so you can change the contents at any time. There is additional software for z/OS called Cache Manager. You can use this to manage the DCR area using Batch Jobs. The software allows you to load the DCR area using dataset names or extents. Very helpful if your files move around, or you have changing needs for SSD performance over 24 hours. For example, Cardpac users may want to put the batch CPBCARD KSDS in DCR for the batch run, and then put the online CPCARD KSDS in DCR during the day. Cache sizes are pretty big nowadays, up to 256GB, so it's not too hard to carve out 5-20GB of cache for some of your key files that are suffering from poor cache hits or severe disk contention and give them Solid State Disk performance. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of R.S. > Sent: Wednesday, 3 May 2006 3:47 AM > To: [email protected] > Subject: Re: Dataset Contention > > Ron and Jenny Hawkins wrote: > [...] > > Finally, if the datasets is 4-5GB and you want to have a ton of jobs > read it > > as fast as possible, then on HDS storage consider putting the file in > > FlashAccess if you have HDS Arrays. This is functionally the same as > Solid > > State Disk (remember those), and it won't matter what sort of disk and > > parity scheme you are using. > > Last but not least: dataset in DASD box cache can any type you want, > while Hiperbatch is limited to SAM and ESDS (AFAIR) organizations. > Ron, can you provide some operational details, how-to do it? > Should I define a volume in cache ? > Can I tell the machine "this volume have to be whole in cache" ? > > -- > Radoslaw Skorupka > Lodz, Poland > > ---------------------------------------------------------------------- > 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
