Re: Large disk concerns/alternatives ?

2009-08-25 Thread Richard Sims
Always, always perform benchmark analysis of any new hardware, software, or network units before committing their use to an application such as TSM. This is an essential element in the acceptance phase of new acquisitions, to assure that they meet advertised performance levels. If the new stuff

Re: Large disk concerns/alternatives ?

2009-08-25 Thread Gerald Michalak
My money is on the SATA disk pool. I ran into something similar with many spindles of SATA disk and was expecting it to fly. nope. We found out that not only was the disk I/O not as expected but that device the disks were in only had 2 I/O ports that were supposed to be in failover mode. But we

Re: Large disk concerns/alternatives ?

2009-08-25 Thread Richard Sims
On Aug 25, 2009, at 10:02 AM, Gerald Michalak wrote: My money is on the SATA disk pool. I ran into something similar with many spindles of SATA disk and was expecting it to fly. nope. Indeed. Vendors often cite SATA and SAS technology throughput rates, leading the customer to believe that

Large disk concerns/alternatives ?

2009-08-24 Thread Ochs, Duane
Good day everyone, I'm looking for some workable suggestions for larger lun backups. I'm talking 1.5tb and larger lun sizes. I have a number of remote sites that have large quantities of hi-res image files and they need an offsite backup solution. Usually we are notified before the disks go into

Re: Large disk concerns/alternatives ?

2009-08-24 Thread Tchuise, Bertaut
Administrator Legg Mason Technology Services *410-580-7032 btchu...@leggmason.com -Original Message- From: ADSM: Dist Stor Manager [mailto:ads...@vm.marist.edu] On Behalf Of Ochs, Duane Sent: Monday, August 24, 2009 12:54 PM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] Large disk concerns

Re: Large disk concerns/alternatives ?

2009-08-24 Thread Allen S. Rout
On Mon, 24 Aug 2009 11:53:52 -0500, Ochs, Duane duane.o...@qg.com said: I'm looking for some workable suggestions for larger lun backups. I'm talking 1.5tb and larger lun sizes. I have a number of remote sites that have large quantities of hi-res image files and they need an offsite backup

Re: Large disk concerns/alternatives ?

2009-08-24 Thread Wanda Prather
Sumthin' wrong with those numbers. If you have a GigE pipe, you should be able to send 70-80 MB/sec. thats 400+ MB/min, 240+ GB per hour, 4+ TB in 24 hours. So, either - your clients are having performance issues with their own disks - maybe you have compression or something else slowing down