Re: I'm getting new disk storage.

2009-08-06 Thread Michael Green
On Tue, Aug 4, 2009 at 7:41 PM, Kelly Lipp wrote: > You are exactly correct: modeling what will be rather than what is can be > tricky.  The problem really boils down to not having enough data to really > play with it adequately. > > I can tell you from experience on probably 200 TSM servers (Win

Re: I'm getting new disk storage.

2009-08-06 Thread Kelly Lipp
It seems the perfect environment for the JBOD I suggested as you do not want all those sessions banging a RAID5 array. Of course work flow is an issue, but the moving a TB disk to disk or disk to tape is a couple of hour process if you work it correctly into your daily processing and probably i

Re: I'm getting new disk storage.

2009-08-06 Thread Huebner,Andy,FORT WORTH,IT
I must be missing something? I cannot saturate my 15 FC 10k disks (3x 4+1 RAID5) with 2GB Ethernet and 110 concurrent clients (330+ sessions). The Ethernet on the other hand is saturated. Out of curiosity, what happens with a disk failure? Andy Huebner -Original Message- From: ADSM: Di

Re: Incl/Excl Problem

2009-08-06 Thread Wanda Prather
That's Brilliant!!! On Tue, Aug 4, 2009 at 1:29 PM, Leandro Mazur wrote: > In here, we use something like this: > > Exclude * > Exclude *:\...\* > Include C:\test\...\* > Exclude.dir C:\[a-s]* > Exclude.dir C:\[u-z]* > > Tha way, we exclude from processing the other unwanted directories of the >

Re: I'm getting new disk storage.

2009-08-06 Thread Kelly Lipp
Andy, In your case, you probably have a good bit of cache in the controller and your RAID sets are relatively small and you're using FC disks which are more reliable, tolerant and faster than SATA so all is good. My data comes from the SATA 7.2K world with six or eight drives per RAID5. Remem

Re: I'm getting new disk storage.

2009-08-06 Thread Huebner,Andy,FORT WORTH,IT
Thank you for the reply; I should have been more precise with the disk failure question. Doesn't a disk failure affect the backup run, or are your pools on many physicals so the loss of one is not fatal to the process? I understand the data loss part; you have a short window of time for a low

Re: I'm getting new disk storage.

2009-08-06 Thread Kelly Lipp
That is correct: you can lose a couple of storage pool volumes (on a failed disk) and still go on. The operation in progress writing to those volumes will stall/fail (I don't know which, but I'm guessing retries probably save your butt). Kelly Lipp CTO STORServer, Inc. 485-B Elkton Drive Color