Depending on your applications, they also may have some need for semi-restricted states, where no one else can be in inventory when you doing end-of-month, or need for regular reorganization of some files. This week the Evansville AS/400 User Group meeting was a round table on disaster planning & backup topics. We shared a lot of stories of challenges & solutions. I was there. Several companies are 24x7 in which they have enough disk space to do a save to save file on disk, then from disk to tape, then wipe out the save file on disk. They only have to take people off for 5 minutes while check pointing what has to be saved. One outfit knows which libraries not being used, and is saving them while bringing everyone else down in that 5 minutes. I do the AS/400 backup & other folks do the Microsoft Backup. I can hear a lot of whining from my collegues. > From: firstname.lastname@example.org (James Rich) > > On Thu, 17 Jan 2002, John Ross wrote: > > > We have an IBM AS400 - 730 and 720. > > Luckily for us, our 2 systems have had > > 0 down time in many years. > > This is probably not true. Do you ever install PTFs or upgrades? How > about backing up your system? You do have down time. You may not have > any failures per se but you do have down time. > > It seems to me that compared to other stable systems (i.e. non-Microsoft) > OS/400 has more downtime due to backup/IPL. That is probably due to the > database backup (which isn't necessary on my other systems since they > don't run the DB). But OS/400 requires the system to be in a restricted > state throughout the backup process. This can require a lot of downtime > every night. > > Can anyone comment on: > > 1. How to minimize downtime due to backup. For example, how to get a > good "snapshot" of the data while minimizing the time spent in a > restricted state. > > 2. How downtime due to system maintainance (daily backup, PTFs, > upgrades, etc.) compares between OS/400 and other stable OSes (like > Solaris, OS/390, other unix). Does anyone run DBs on something besides > iSeries and can comment on their backup process? > > Surely someone like the New York Stock Exchange has a lot of data to > backup every day and also can't allow their machine to be restricted for > very long. How do they do it? > > James Rich > email@example.com MacWheel99@aol.com (Alister Wm Macintyre) (Al Mac) BPCS 405 CD Manager / Programmer @ Global Wire Technologies Incorporated http://www.globalwiretechnologies.com = new name same quality wire engineering company: fax # 812-424-6838
As an Amazon Associate we earn from qualifying purchases.
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.