This results in my most controlled flights. With slower discs (compared to the wider rims), I often do a very slow walk/run up, barely reach back at all, and simply concentrate on a quick clean pop.
FAST DISK ARCHIVE DRIVERS
With newer, wide rimmed drivers I do a full run-up and reach back. So is it possible to throw slow, but put a lot of spin on a disc? I definetely notice a difference in flight when I switch up a couple of things related to my release. Your arguement would be with them, not me. These are some pretty smart guys, who have done some world record breaking things in aerodynamics. I'd still argue this in incorrect but will wait for your answer.Īs I said previously, this is the PHDs at Aerovironment, who said that maximum forward velocity is directly related to maximum speed as if it is rolling out of your grip. Perhaps what you are saying is that under ideal conditions, the best you can do is to have the disc roll off your hand at the maximum forward speed thus achieving the maximum torque. More importantly, this seems contraindicative of your own definitions on tendon bounce and it's effect on disc flight. I would argue that is weak at best, given that the effects on disc flight between each type of throw is significant, at least for me. Now, it might be that the difference is spin rate between trying to put torque on the disc and not trying to put spin on it is not statistically significant. I know for sure that I can take some off of my throw and work on putting a whole lot more torque on the disc, that is, I can vary the rate of spin on my disc and rate of forward motion consciously.
If for no other reason than it assumes a very static relationship between speed of release and spin rate on what is a very dynamic process. Yes, if by "clean" you mean sharp/quick/strong and off axis torqueless. A solid grip with a clean release results in the most spin and all the benefits that go along with that. We were throwing 21.7 cm discs.įrom this I gather that your grip (with which you roll the disc out of your hand) along with your armspeed determine the amount of spin you impart on a disc. We measured the highest air velocities at around 70 MPH and calculated spin from that. In other words, you calculate how fast a disc needs to spin to roll whatever forward velocity. Scientists I worked with at Aerovironment reasoned that a disc essentially rolls out of your grip and therefore has a spin rate proportional to its forward speed. This "move to disk and then archive" method will allowfor many more logs/hour to be processed by NetBackup than viauserexit.I think the reason this hasn't been solved with a simple method is that I'm not sure there's much useful benefit for knowing how fast a disc spins. The fewer and larger backup jobs are more efficient thanmany small jobs.
FAST DISK ARCHIVE ARCHIVE
To configure DB2 to backup the archive logs to disk,change the DB2 configuration parameter "logarchmeth1" from "USEREXIT" to"DISK:/path". Use DB2 to backup log files for allinstances to a disk path and then, periodically, archive all logs in that pathusing bparchive. If logs are generated faster than this thresholdor if other backups are initiated for or by this master server, then the DB2archive logs may not be backed up as fast as they arecreated. It seems that themaximum log throughput for the production DB2 system, with this configuration,is about 1371 logs/hour. During the minimumlog throughput, log backups of another DB2 system and other scheduled jobs wererunning whereas there were few or no other backups running at other times ofmaximum DB2 log backups from the system of interest.
Minimum log backup throughput wasapproximately 850 logs/hour for the same environment. Maximum log backup throughput was approximately 1371 logs/hourfor the 16 servers / 32 tape drives. Observation that the DB2 archive logs were notbeing backed up fast enough to prevent the disk log area fromfilling. NetBackupuserexit program to backup DB2 log files to tape with 4xmultiplex. NetBackup Media server/client 6.0MP5 on AIX 5.3ġ28 DB2 nodes on16 servers (eight nodes per server), two tape drives per server.
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