Conversely, sometimes it is hard to get the backups all done in a low activity window, so one might compromise in favor of faster backups even at the expense of more CPU consumption.
Depending on shop's strategy, getting a logically consistent PIT copy just might put the backups in the business critical path. That is, all have to complete before the next business day starts. -----Original Message----- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Ron Hawkins Sent: Thursday, December 02, 2010 12:58 PM To: IBM-MAIN@bama.ua.edu Subject: Re: Hardware-assisted compression: not CPU-efficient? Gil, I was thinking that a faster restore would be have some value as a reduction in recovery time, as opposed to back-up duration which is usually outside of any business critical path. This would have value in business continuance whether it was a small application recovery or a full disaster recovery situation. I don't think the frequency of recovery is a factor in this case. Ron > -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of > Paul Gilmartin > Sent: Thursday, December 02, 2010 6:09 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: [IBM-MAIN] Hardware-assisted compression: not CPU-efficient? > > On Thu, 2 Dec 2010 02:53:17 -0800, Ron Hawkins wrote: > > > >The saving in hardware assisted compression is in decompression - when you > read it. Look at what should be a much lower CPU cost to decompress the files > during restore and decide if the speed of restoring the data concurrently is > worth the increase in CPU required to back it up in the first place. > > > So if you restore more frequently than you backup, you come out ahead? > > -- gil > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
