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Operating Systems Linux Red Hat Advice on allocating SAN storage to a virtual database server on VMware Post 303027932 by gull04 on Friday 28th of December 2018 10:19:35 AM
Old 12-28-2018
Hi dkmartin,

I'll reiterate, there is a dependency on the backend configuration.

If you have a requirement to slice and dice a 1Tb LUN, you'll end up (from your comments) /dev/sda1, /dev/sda2, /dev/sda3 etc....... These would then be used for the "rootvg", the "appvg" the "dbvg" or any other way that you decide to apportion the disk.

If you decide to go for individual LUN's then you would have effectively a "ROOT_LUN", an "APP_LUN" and a number of "ORACLE_LUNS" for things like redo, archive, table space and all the other bits of an Oracle Instance - basically whatever your standard build is.

Without knowing what the backend storage is and how it is configured, how the storage is managed and how it is tiered are the arrays intelligent along with a miriad of other requirements it isn't possible to be any clearer with the information.

At the back end this could be all on one physical disk (You don't want that) or it could be spread over many physical disks.

For simplicity of management a single LUN is good, if the I/O on the VM will allow you to do that without impacting performance.

As to this being "configuration advice" it is not, there is no way that any advice could be given based on what you have told me - the sum total of the knowledge inparted by yourself is that "It's currently AIX and it's moving to Linux on VMware - the LUN mentioned is 1Tb and you use Oracle".

Oh! and it won't be using ASM.

Regards

Gull04

Last edited by gull04; 12-28-2018 at 11:25 AM.. Reason: Minor addition.
 

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metaimport(1M)															    metaimport(1M)

NAME
metaimport - imports disk sets into existing Solaris Volume Manager configurations SYNOPSIS
metaimport -s setname [-n] [-v] [-f] [disks...] metaimport -r [disks...] metaimport -V metaimport -? The metaimport command allows the importing of disk sets, including replicated disk sets, into an existing Solaris Volume Manager configu- ration. Replicated disk sets are disk sets created using remote replication software. The default Solaris Volume Manager configuration specifies a maximum number of disk sets that can be configured. The metaimport command fails if importing the disk set would result in exceeding the number of disk sets configured on the system. To increase the number of disk sets allowed on a system, see the . Use metaset(1M) or metastat(1M) to view the configuration of the imported set. You must run metaimport as root. metaimport requires a functional Solaris Volume Manager configuration before it runs. The following options are supported: -f Force the import, even if a quorum of replicas from the imported disk set is not available. This option could result in corrupt configurations and should only be used when metaimport fails with the "Insufficient quorum detected; exiting" error. If only a partial disk set is available, this option might be necessary to successfully import. Some or all data could be corrupted or unavailable when importing a partial set or a set lacking a replica quorum. -n Does not actually perform the operation, but shows the output or errors that would have resulted from the opera- tion, had it been run. -r Report on the non-configured disk sets found on the system. If no disk device or LUN is specified, metaimport reports on all non-configured disk sets attached to the system. When the name of one disk is specified, metaimport reports on the disk set (or virtual LUN) containing the specified disk. If two or more disks are specified, metaim- port reports on the set (or sets, if they belong to different disk sets) containing the specified disks. If two or more disks are specified, metaimport reports on the set (or sets, if they belong to different disk sets) containing the specified disks. -s setname Specify the disk set name to use when importing. The imported disk set will be called setname, without regard to the name it may have had on a different system. -v Verbose. Provides detailed information about the metadb replica location and status. -V Version information. -? Display a help message. Example 1: Importing a Disk Set The following example creates a disk set called blue and identifies c1t5d0 as a disk containing a state database replica from the disk set being imported. # metaimport -s blue c1t5d0 Example 2: Reporting Disk Sets to Import The following example scans all disks and LUNs attached to the system and configured as part of the system. It scans for disks that could be part of a disk set to be imported. Components that are already part of the Solaris Volume Manager configuration are ignored. This use of metaimport provides suggested forms of the metaimport command to use to actually import the disk sets that have been found. You can specify a component on the command line to reduce the scope of the scan and generate results more quickly. # metaimport -r 0 Successful completion. >0 An error occurred. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWmdu | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ mdmonitord(1M), metaclear(1M), metadb(1M), metadetach(1M), metahs(1M), metainit(1M), metaoffline(1M), metaonline(1M), metaparam(1M), metarecover(1M), metareplace(1M), metaroot(1M), metaset(1M), metasync(1M), metattach(1M), md.tab(4), md.cf(4), mddb.cf(4), attributes(5) 16 May 2005 metaimport(1M)
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