Re: different cartridge sizes in one library
That will work fine. The LTO standard says that any drive can read *and *write one generation back, can read 2 generations back. So LTO4 drives can both read and write LTO3 cartridges. (You still get the speed and capacity of LTO3 on those cartridges.) Your LTO4 drives can read LTO2 cartridges, but not write to them. If you upgrade your drives to LTO5 in the future, then your existing LTO3 cartridges could be read, but not written to. So it would be easy to read the data to convert to LTO5, but you could not write to the LTO3 cartridges again. On Sat, Nov 14, 2009 at 12:36 AM, Mehdi Salehi iranian.aix.supp...@gmail.com wrote: I do not mean different drives, but different cartridges of different LTO generations. e.g a library has two LTO4 drives and mix of LTO4 and LTO3 cartridges.
Re: different cartridge sizes in one library
Thanks Wanda
Re: different cartridge sizes in one library
Yes, and remember to put the smaller drives at the head of the line in the library. That way the smaller tapes can move up to the smaller drives and the larger ones will stay at the bottom. I've noted over time that TSM will use the drives in order from 01 down, and if you have the larger ones at the top then the smaller tapes make take up the drive bays. We currently have a mix of LTO2 and LTO3 drives. See Ya' Howard -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of David McClelland Sent: Wednesday, November 11, 2009 10:14 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] different cartridge sizes in one library There's a link for that: http://publib.boulder.ibm.com/infocenter/tivihelp/v1r1/topic/com.ibm.it smaix n.doc/anragd55108.htm#mixdevtype In fact, there are a few links - another: http://www.redbooks.ibm.com/redbooks/pdfs/sg246502.pdf (section 5.11 - Mixed Media Libraries). Briefly, yes, you can do it depending upon library type, media type and media generation backward and forward compatibility. /DMc -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Mehdi Salehi Sent: 11 November 2009 16:01 To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] different cartridge sizes in one library Hi, What happens if I mix different generations of LTO cartridges in a tape library? Does it matter from TSM's point of view? Let say a library with LTO4 drives but LTO4 and LTO3 cartridges in a mixture. Thanks No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.698 / Virus Database: 270.14.55/2490 - Release Date: 11/08/09 19:39:00
Re: different cartridge sizes in one library
I do not mean different drives, but different cartridges of different LTO generations. e.g a library has two LTO4 drives and mix of LTO4 and LTO3 cartridges.
different cartridge sizes in one library
Hi, What happens if I mix different generations of LTO cartridges in a tape library? Does it matter from TSM's point of view? Let say a library with LTO4 drives but LTO4 and LTO3 cartridges in a mixture. Thanks
Re: different cartridge sizes in one library
There's a link for that: http://publib.boulder.ibm.com/infocenter/tivihelp/v1r1/topic/com.ibm.itsmaix n.doc/anragd55108.htm#mixdevtype In fact, there are a few links - another: http://www.redbooks.ibm.com/redbooks/pdfs/sg246502.pdf (section 5.11 - Mixed Media Libraries). Briefly, yes, you can do it depending upon library type, media type and media generation backward and forward compatibility. /DMc -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Mehdi Salehi Sent: 11 November 2009 16:01 To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] different cartridge sizes in one library Hi, What happens if I mix different generations of LTO cartridges in a tape library? Does it matter from TSM's point of view? Let say a library with LTO4 drives but LTO4 and LTO3 cartridges in a mixture. Thanks No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.698 / Virus Database: 270.14.55/2490 - Release Date: 11/08/09 19:39:00
