Recent Posts

How to Configure Software RAID on Linux ?

Software RAID is one of the greatest feature in Linux to protect the data from disk failure.We have LVM also in Linux to configure mirrored volumes but Software RAID  recovery is much easier in disk failures compare to Linux LVM. I have seen some of the environments are configured with Software RAID and LVM (Volume groups are built using RAID devices).Using simple md commands, we can …

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Best Backup Softwares For VMWARE

Securing data is one of the biggest task in infrastructure management.If any thing goes wrong on the system,you need a good and latest backup to restore in timely manner.There are several  factors you need to consider before choosing the right backup software for you ESX environment. VMWARE backup is somewhat different from traditional backup methods.Here we have option to take complete virtual machine backup …

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UnixAdmin:Best SSH/TELNET Tools

Unix Admins would like to have one of the best ssh/telnet tools on their desktop.If we say best tools, what are the features it should have by default? Now a days there are many tools available in market which are coming with great features.These ssh tools should have session log saving feature and also it should support multiple protocols like …

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How to configure Solaris 10 IPMP ?

This article describes how to configure link based IPMP interfaces in Solaris 10. IPMP eliminates single network card failure and it ensures system will be always accessible via network.You can also configure the failure detection seconds in “/etc/default/mpathd” file and the default value is 10 seconds.In this file there is an option called  “FAILBACK” to specify IP behavior when primary …

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SAN/NAS – 10 FREE STORAGE APPLIANCES

Storage virtualization brought many advanced features to SAN/NAS world.SAN/NAS appliance moved one step forward and made any system can be act as virtual SAN/NAS box.For an example using openfiler, you can provision LUNS and assign to any server using ISCIS protocol.The same way it can act like NAS filer as well.Here I have list down the SAN/NAS appliance which are …

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How to configure bonding/teaming on Redhat Linux 6 ?

All the system admin would like to avoid server outage by having redundancy for root filesystem using mirroring,  Multiple FC links to SAN with help of multi-pathing and many more.So here the question is how do you provide redundancy in network level ? Having a multiple network card will not give any redundancy.In redhat Linux you need to configure bonding to accomplish the network level redundancy.Once you have …

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wireshark – How to analyse captured network data ?

Network troubleshooting is most difficult part in Unix Administration.To get resolve these network issues ,you need good support from network team .You never know where the problem resides on network issues since many hardwares involved like NIC,switch,cables, routers and firewalls. Most of the network issues are intermediate and you never know when it will happen again.So you need to capture complete network activity  to find the issues.In Solaris we …

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Solaris 11 – New Features & Capabilities of Zones

Solaris 11 zones have some many differences from Solaris 10 zones.Oracle tried to make zone as completely independent  virtual machines and they succeed on that.Oracle introduced many utilities and new features in Solaris 11 local zones.some of the key features are, 1. zonestat 2. beadm in zones 3. anet, the new auto-configuring zone network interface type 4. Preconfigure zones 5. …

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