And when you do go directly to disk, it is not into a diskpool but rather into a pool defined with a device class of type file. The end result is more or less the same but the configuration is quite different.
This should bring up an interesting discussion about what is more efficient: a traditional diskpool of devclass DISK and a "diskpool" using the file device class. Apparently, and I have no experience to back this up, the second type of disk pool is faster due to its sequential nature. Won't that change our thinking? Kelly J. Lipp Storage Solutions Specialists, Inc. PO Box 51313 Colorado Springs, CO 80949 [EMAIL PROTECTED] or [EMAIL PROTECTED] www.storsol.com or www.storserver.com (719)531-5926 Fax: (240)539-7175 -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of Jvrg Nouvertni Sent: Wednesday, October 24, 2001 6:35 AM To: [EMAIL PROTECTED] Subject: Re: SAN Environment That's correct as long as you install the Storage Agent on the client, which "borrows" a drive from the TSM server and send only the management info through the LAN. Therefore you needs the (expensive) STA license and to my knowledge the library sharing option. We used it once but had to disable it, since in our environment (W2K Client/STA and AIX TSM 4.2.0.1) we cannot read most of the data being backed up, because the real blockheader on the tape does not match the expecting one. But it's fast, together with the TDP for Domino we achieved ~18MB/sec throughput for each tape drive (3 in parallel). I hope, IBM/Tivoli can resolve this issue soon. Joerg Nouvertne http://home.wtal.de/the_swordsman > -----Original Message----- > From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of > Chris Young > Sent: Dienstag, 23. Oktober 2001 21:37 > To: [EMAIL PROTECTED] > Subject: Re: SAN Environment > > > One other thing that is interesting to note...If you are using > LAN-Free, you > can create a management class that points to a disk pool and a management > class that points to a tape pool and then make entries in the > incl/excl list > to include these management classes. By doing this, you can direct some > data to go over the SAN directly to tape (LAN-Free) and have > other data pass > over the network to disk. While I have only experimented with > this at this > time, it seems to have potential performance benefits if you network > bandwidth available. > > Christopher S. Young > Senior System Engineer > Gresham Enterprise Storage > www.greshamstorage.com > Office: 303.413.1799 x 205 > Mobile: 303.717.2745 > > > -----Original Message----- > From: Lambelet,Rene,VEVEY,GL-IS/CIS [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, October 23, 2001 12:57 PM > To: [EMAIL PROTECTED] > Subject: Re: SAN Environment > > > You can backup LAN-free to disc if you have SANErgy installed on > a metadata > server. > If not, you can only backup LAN-free to tapes. > > Regards, > > > Reni Lambelet > > Nestec S.A. / Informatique du Centre > > 55, av. Nestli CH-1800 Vevey (Switzerland) > > *+41'21'924'35'43 7+41'21'924'28'88 * K4-117 > > email [EMAIL PROTECTED] > > Visit our site: http://www.nestle.com > > > > This message is intended only for the use of the addressee > > and > > may contain information that is privileged and confidential. > > > > > > -----Original Message----- > > From: Mauro Jr, Frank [SMTP:[EMAIL PROTECTED]] > > Sent: mardi, 23. octobre 2001 18:39 > > To: [EMAIL PROTECTED] > > Subject: SAN Environment > > > > We currently point our backups to disk. > > > > If we go to a SAN environment can we still use disk or will we > have to go > > to > > tape? > > > > Frank Mauro > > Backup and Recovery Services > > [EMAIL PROTECTED] > > Telephone Number: 603.245.3207 > > Beeper Number: 888.797.0806 > >
