Hi, No whitepapers or the like, just experience: we are running a RS/6k with 4 HBA's with mixed disk and tape. Each ESS disk runs through each HBA (e.g. each vpath has 4 hdisks). Each HBA also runs 2 LTO-1 drives from a 3584 library.
This setup is running for over 4 years now without any problems (the last two year TSM is involved. The RS/6k now uses the LTO drives through the LANfree option whereas befoer we use some local backup mechanism). -Marcel On Thu, Apr 29, 2004 at 01:32:45PM +0200, Daniel Sparrman wrote: > Hi Bill > > Just check out the readme-files that comes with the patch/maintenance > package. It clearly states that Tivoli recommends connecting the tape > drives on separate adapters from the disk. > > >From the readme-file of the TSM StorageAgent for SUN v5.2.1.3 > (ftp://ftp.software.ibm.com/storage/tivoli-storage-management/patches/storage-agent/5.2.1.3/TSMSTA5213_SUN.README): > > ********************************************************************************* > * Host Bus Adapter recommendation * > ********************************************************************************* > > It is highly recommended that Tape Drives and Tape Libraries be connected > to the > system on their own host bus adapter and not share with other devices > types (DISK, > CDROM, etc.). > > Best Regards > > Daniel Sparrman > ----------------------------------- > Daniel Sparrman > Exist i Stockholm AB > Propellerv?gen 6B > 183 62 T?BY > V?xel: 08 - 754 98 00 > Mobil: 070 - 399 27 51 > > > > Bill Boyer <[EMAIL PROTECTED]> > Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > 2004-04-29 13:20 > Please respond to > "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]> > > > To > [EMAIL PROTECTED] > cc > > Subject > Disk and Tape access over the same fibre adapter > > > > > > > Just got a new client that wants to do some LANfree backups, but they > don't > believe me when I tell them that the recommended way is to have a separate > HBA for disk and tape. They don't think that mixing the 2 will be a > performance issue. I remember a couple years ago this was an issue of data > corruption, but that has been addresses. > > Can someone point me to any whitepapers or documentation explaining why > they > should spend a couple more $'s and get an additional adapter for those > server they want to do LANfree backups on? > > TIA, > > Bill Boyer > "Experience is a comb that nature gives us after we go bald." - ?? -- ======-------- Marcel J.E. Mol MESA Consulting B.V. =======--------- ph. +31-(0)6-54724868 P.O. Box 112 =======--------- [EMAIL PROTECTED] 2630 AC Nootdorp __==== www.mesa.nl ---____U_n_i_x______I_n_t_e_r_n_e_t____ The Netherlands ____ They couldn't think of a number, Linux user 1148 -- counter.li.org so they gave me a name! -- Rupert Hine -- www.ruperthine.com
