Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Solaris Live Upgrade – Known Issues that frequently fails the Live Upgrade

      While troubleshooting some of the Live upgrade issues in my test environment, I have come across some important list of known issues which causes the Live Upgrade to fail. Even in the past, I have noticed that many Solaris folks complained about the...

3

SRDF – Symmetrix remote data facility

    Introduction: Symmetrix Remote Data Facility (SRDF) family of software is the industry’s most powerful suite of remote storage replication solutions for disaster recovery and business continuity designed by EMC. SRDF transparently remotely mirrors production or primary (source) site data to a secondary (target) site....

5

Solaris Tips : Check current active boot device, when used in volume manager (SDS / SVM / VxVM)

During regular maintenance It is often a requirement  to us to determine which  disk we actually boot from when the root volume is under volume manager control.   Solaris on SPARC   Sparc with SVM  # prtconf -pv|grep bootpath: bootpath: ‘/sbus@3,0/SUNW,fas@3,8800000/sd@1,0:a’ Sparc with VxVM Root Volume...

6

Unable to get EMC storage Lun's visible under veritas control in Linux.

  I was performing Storage migrations for Linux RHEL 5.x and 6.x having VXVM. Storage have provided the Lun’s and confirmed all is okay from their end. But I was unable to get them visible on Veritas level though the same were visible at OS level....

4

Storage Administration : Netapp Snapmirror

Snap Mirror Basics   1. Snapshot technology is the foundation for SnapMirror 2. SnapMirror is a fast and highly flexible solution for replicating data over LAN, WAN and FC networks. It can also be used for data migration, data distribution for load balancing and remote access. 3. No interruption...

8

Virtual Lab : Get Your hands dirty with grep & RegEx

Regular expressions are extremely useful in extracting information from text such as code, log files, spreadsheets, or even documents. As an unix administrator we do regularly use the regex to perform various problem diagnosis , automation or remediation tasks. And it is almost impossible to imagine...

8

RHEL 6 – ISCSI Administration Series – ISCSI Lun resize

This is second post from the ISCSI administration series ( you can refer the first post here RHEL 6 – ISCSI Administration Series – Configuring ISCSI Server and Client ) . In this post, I will be showing you an hands-on exercise to expand a ISCSI LUN which is already...

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