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- From: rudy@chukran.austin.ibm.com
- Newsgroups: comp.unix.aix
- Subject: Re: Logical Volume Groups
- Message-ID: <1992Aug12.234602.14900@awdprime.austin.ibm.com>
- Date: 12 Aug 92 23:46:02 GMT
- References: <5684@hq.hq.af.mil>
- Sender: news@awdprime.austin.ibm.com (USENET News)
- Reply-To: chukran@austin.vnet.ibm.com(Rudy Chukran)
- Organization: IBM Advanced Workstation Division
- Lines: 31
-
- In article <5684@hq.hq.af.mil>, rknowles@postmaster@hq.af.mil (Rick Knowles) writes:
- |> Me and a couple of other guys are about to set up a 530H. Everything was
- |> going fine until we got into an argument on logical volume groups. Currently
- |> we are divided into at least two camps. One guy wants to have just rootvg,
- |> another wants at least two volume groups, and one weenie refused to vote.
- |> Obviously there are pros and cons to both setups. With one vol grp, we put
- |> the entire system on an image backup. On the other, we have greater control
- |> on the location of our data.
- |> Does anybody have any good stories/experiences/suggestions out there? Are
- |> there any pitfalls we need to be aware of?
- I strongly vote for the multiple vgs and more specifically a single disk
- rootvg. Reasons?
-
- Backup flexibility. I backup with mksys (which gets only system data on rootvg)
- seldom. I back up my stuff frequently. I dont waste time backing up stuff
- which doesnt change. I dont like incremental backups, but thats just me.
-
- Castastrophe odds. Lose any disk in a multidisk rootvg, and you dont boot.
- The more disks in rootvg, the greater the probability of boot catastrophe.
-
- Data placement flexibility. This can buy you performance if your
- system is disk I/O bound in just the right way and you know what to move
- where.
- --
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- Rudy Chukran | EMAIL:
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