Re: Failed Disk Data Exposure
Don, I suggest that you look into your vendor's implementation of encryption of data at rest. If you have HDS then all RAID schemes and disk types are supported (HDD, SSD and SATA) and there is no performance impact. I believe EMC and IBM also support Encryption of data at rest. With encryption of data at rest there is no exposure as you describe, and there';s no need to scrub/erase/degauss/destroy your disk drives when you replace them. Ron From: Grinsell, Don dgrins...@mt.gov To: IBM-MAIN@bama.ua.edu Sent: Fri, June 8, 2012 2:16:13 PM Subject: [IBM-MAIN] Failed Disk Data Exposure Here's a Friday topic: With modern disk arrays, e.g. DS8000, what is the real exposure of meaningful residual data being recovered from a single drive out of the array. I can't seem to find anything definitive other than a lot of data may be recoverable statements from vendors selling secure erase services. Just curious if anybody has any hard data to demonstrate an exposure or not. Donald Grinsell State of Montana 406-444-2983 dgrins...@mt.govmailto:dgrins...@mt.gov Any fool can write code that a computer can understand. Good programmers write code that humans can understand. ~ Martin Fowler -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: INFO IBM-MAIN
Re: Mainframe Executive article on the death of tape
Lynn, I don't recall the year, but there was an IBM annual report one year with a picture of a computer room and an STK Solid State Disk Subsystem standing proudly standing against the wall in teh background. Ron late 70s, early 80s ... internally there was a lot of 1655 from a vendor ... used for paging at large number of internal vm370 sites. they could be configured as 2305 fixed-head disk emulation or as native (if you wrote the support). -- 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
Re: You know you've been doing too much MVS when...
I used to have a VM SE in Melbourne with the initials VM and her number plate was VM 370 Hello if you are out there Veronica. From: Lloyd Fuller leful...@sbcglobal.net To: IBM-MAIN@bama.ua.edu Sent: Wed, March 31, 2010 1:49:24 AM Subject: Re: [IBM-MAIN] You know you've been doing too much MVS when... When I was at Orange Coast College in Costa Mesa in the early 1970s, the APL professor had been fighting for a couple of years to get APL as his plate. The review board kept denying him. Even though he explained what it meant, they KNEW that it had to really be something dirty. I don't know if he ever got the plate that he wanted. Lloyd - Original Message From: Donnelly, John P john.p.donne...@nsc.com To: IBM-MAIN@bama.ua.edu Sent: Tue, March 30, 2010 10:36:57 AM Subject: Re: You know you've been doing too much MVS when... ...had a guy here in Santa Clara, CA who applied for personalized license plates with his initials displayed in HEX... ...License Review Board rejected the display... -- 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 -- 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
Re: Mainframe Executive article on the death of tape
Ted, I don't agree that this is conventional wisdom for SSD. The target datasets for SSD are (a) very low read cache hit percentage, (b) very high sibling pend delays, or (c) a net D2C and C2D IO demand that exceeds the capabiltiy of disk drives a used capacity ratio around 10% (depends on what you pay for disk and SSD). I would suggest that only part of many high profile databases meet that criteria. I think the 80/20 or 90/10 ROT are still alive and kicking. Ron From: Ted MacNEIL eamacn...@yahoo.ca To: IBM-MAIN@bama.ua.edu Sent: Mon, March 29, 2010 3:06:19 PM Subject: Re: [IBM-MAIN] Mainframe Executive article on the death of tape You have a very high profile database, get a solid-state storage system to put the data on. I know that is the conventional wisdom. Lower priority stuff gets to stay on the old hard round/brown disks. I saw a presentation, at CMG Canada last month, where the presenter showed the benefits, of putting something not so loved on SSD, and everybody won because it was moved out of the way. Commercial grade SSD is an order of magnitude more expensive than the stuff you find in cell phones and digital cameras. - Too busy driving to stop for gas! -- 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 -- 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
