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How to upgrade zpool version on solaris ?

zpool/rpool upgrade on solaris

zpool version needs to be upgrade whenever you are performing the OS patching .Because the newer version of zpool offers the more functionality  and fixes a lot bugs. zpool upgrade can be performed on the fly without any impact to the data pools and rpool. But you need to consider lot of things prior the zpool upgrade. Because once you …

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How to Break the ZFS mirror on Solaris ?

ZFS split zpool

This article is going to explain how to break the ZFS mirror on Solaris.I am not sure how this will be useful in real production environment. Because splitting can be  possible only on mirrored zpool. Unlike veritas volume manager diskgroup split, ZFS is not going to divide the zpool. Its just remove the mirror and keep the copy on mirrored …

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Solaris 11 – ZFS Must known features

In this ZFS tutorial series,Here we are going to see about new features of ZFS and it’s usage in real production environment. Oracle is continuously developing ZFS and they brought some of the nice features in to Solaris 11 ZFS . Here we are mainly focusing on ZFS deduplication and ZFS encryption mechanisms. ZFS Deduplication is the process of eliminating duplicate copies of data …

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ZFS – ZPOOL Cache and Log Devices Administration

In this ZFS training/tutorial series,this article will talk about ZFS performance issues.If you didn’t tune the system according to the application requirement or vise-verse,definitely you will see the performance issues.For an example ,some of the applications may have more read requests than write and databases sends more write requests than read.So according the application,you need to configure the ZFS storage …

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ZFS – How to Extend ZPOOL and Re-layout ?

One of the prime job of Unix administrators will be extending and reducing the volumes/filesystems according to the application team requirement.In Veritas volume manages,we carry out such a tasks in online without un-mounting the filesystems. To increase or reduce the filesystem, you need to add or remove the disks  from the diskgroup in vxvm. But in ZFS, once you have added the disk …

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Solaris ZFS – Interview Questions

As we know Oracle made ZFS is a default root filesystem from Solaris 11 onwards. This shows their future plans of improving ZFS and making it as worlds best volume manager cum filesystem in near future.Customers would like to have ZFS in their environment  since its a inbuilt volume manager and there is no additional operating cost unlike VXVM. They preferred ZFS data volumes in mid …

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How to add ZPOOL-ZFS to Solaris local zones ?

Oracle is marketing Oracle’s ZFS(Zeta Byte filesystem) is the next generation filesystem. If you say next generation filesystem,will it be enhanced to support OS virtualization ? Yes.It is.Unlike VXVM, we can delegate the entire zpool to local zones.So that we can manage the entire zpool from the local zone level without logging in to global zone.It includes creating new ZFS dataset,destroying existing dataset and managing …

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ZFS – How to increase rpool in Solaris

We have an issue in ZFS “the next generation filesystem”  as well.In ZFS, you can not extend the root pool by adding new disks.But it has some logic too. For an example,if you are having more than one harddisk in root zpool, loss of one disk result be un-bootable system.To eliminate these kind of situations ,its better to keep the rpool in one disk …

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Demonstration ZFS snapshots on Solaris

ZFS snapshot is one of the cool features in Solaris .Using the snapshot, we can take the online backup and using “zfs send” feature we can send the zfs snapshot stream to any remote location and receive from there as well.These snapshots are space optimized and snapshot will not hold any disk-space in the initial stage. It will just refer to the original filesystem …

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ZFS quick command reference with examples

ZFS-Zetta Byte filesystem is introduced on Solaris 10 Release.To develop this filesystem cum volume manager,Sun Micro-systems had spend lot of years and some billion dollars money. ZFS has many cool features over traditional volume managers like SVM,LVM,VXVM.Here is the some of the advantages listed below.Advantages:1.Zpool Capacity of 256 zettabytes2.ZFS snapshots,clones and Sending-receiving snapshots3.Lightweight filesystem creation4.Encryption5.Software RAID6.Data integrity 7.Integrated Volume management (No need an additional volume manager)Disadvantages:1.No way to reduce the zpool capacity 2. …

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