Re: Load balancing when you have many virtual tapes?

2014-10-15 Thread Steven Harris
) will auto load balance across hba's. Rick -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Erwann Simon Sent: Monday, October 13, 2014 12:36 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: Load balancing when you have many virtual tapes? Hello

Re: Load balancing when you have many virtual tapes?

2014-10-15 Thread Rhodes, Richard L.
] On Behalf Of Steven Harris Sent: Wednesday, October 15, 2014 8:24 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Load balancing when you have many virtual tapes? Rick I have a recent set up, TSM 6.3.4.300 on AIX 7.1, LTO5s and I too always thought that the atape driver did load balancing. However I

Re: Load balancing when you have many virtual tapes?

2014-10-15 Thread Steven Harris
for each tape drive? Rick -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Steven Harris Sent: Wednesday, October 15, 2014 8:24 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: Load balancing when you have many virtual tapes? Rick I

Load balancing when you have many virtual tapes?

2014-10-13 Thread Prather, Wanda
TSM 7.1.1 on AIX So I have a customer putting in a VTL, which will have 96 virtual drives. Those virtual drives will be spread across 4 HBA's. What sort of strategies to people use to keep TSM from starting a BACKUP stgpool process and picking 4 virtual drives all on the same HBA? Is it

Re: Load balancing when you have many virtual tapes?

2014-10-13 Thread Erwann Simon
Hello Wanda, As TSM allocates drives in order, you have to distribute drive between the HBAs in a round robin way (with 4 hba : drive 1 on hba 1, drive 2 on hba... drive 5 on hba 1 and so on). I prefer doing this at VTL level using mapping policy (i.e access groups on Data Domain). Le 13

Re: Load balancing when you have many virtual tapes?

2014-10-13 Thread Rhodes, Richard L.
Simon Sent: Monday, October 13, 2014 12:36 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: Load balancing when you have many virtual tapes? Hello Wanda, As TSM allocates drives in order, you have to distribute drive between the HBAs in a round robin way (with 4 hba : drive 1 on hba 1, drive 2 on hba

Re: Load balancing when you have many virtual tapes?

2014-10-13 Thread David Ehresman
, Wanda Sent: Monday, October 13, 2014 12:29 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Load balancing when you have many virtual tapes? TSM 7.1.1 on AIX So I have a customer putting in a VTL, which will have 96 virtual drives. Those virtual drives will be spread across 4 HBA's. What sort

Re: Load balancing when you have many virtual tapes?

2014-10-13 Thread Prather, Wanda
Yes, emulating LTO with atape driver. -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Rhodes, Richard L. Sent: Monday, October 13, 2014 1:08 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] Load balancing when you have many virtual tapes

Re: Load balancing when you have many virtual tapes?

2014-10-13 Thread Rhodes, Richard L.
to one of the other equivalent devices. Rick -Original Message- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Prather, Wanda Sent: Monday, October 13, 2014 1:27 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: Load balancing when you have many virtual tapes? Yes