church1e's blog

A repository of information technology questions and answers

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Solaris UFS file system overview

UFS is the primary file system for the Solaris OS. UFS is extremely mature, very stable, and for most applications, is the file system of choice.

Solaris SAM and QFS file systems

When it comes to storage, Solaris provides more choices than any other OS. Add a couple of packages and you have a hierarchical storage manager.

How to backup SAM-FS file systems

samfsdump can back up 100,000 files a minute, because it's not backing up the full files, just control data. Meaning restore time is also VERY fast.

Solaris MultiPathing options

Checking if any of the MPxIO, VxDMP or EMC PowerPath multipathing software is installed and active on a given Solaris system.

Scanning for new luns

This is a short article on how to rescan newly added luns in Solaris, Linux, AIX and HP-UX operating systems.

ZFS versions in Solaris 10

This article describes available ZFS versions, features of each version, and the Solaris release that provides the ZFS version and feature

Changing the WWN on a SPARCstorage Array

There are times when it is advantageous to change the World-Wide Number (WWN) for a particular SPARCstorage Array, such as after replacing the battery

Simple RAID cheat sheet

RAID is a method of combining several hard drives into one unit. Offering fault tolerance and higher throughput levels than a group of drives.

UFS logging in Solaris (updated)

When enabled, all changes to file system meta-data are written to an intent log prior to being written out to the file system itself.

ZFS command line examples

ZFS uses the concept of storage pools to manage physical storage. Historically, file systems were constructed on top of a single physical device.

Solstice DiskSuite Soft Partitions

SVM provides the ability to create more partitions than the limit of 7 using traditional partitions. Such partitions are called soft partitions.

ZFS Internals

Max Bruning wrote an excellent paper on how to examine the internals of a ZFS data structure.

Basic VxVM Commands

This post provides a list of basic Veritas Volume Manager (VxVM) commands

ZFS Quick Reference Guide

ZFS uses the concept of storage pools to manage physical storage. Historically, file systems were constructed on top of a single physical device.

ZFS Pool Management

When disks are added to an existing mirrored or RAID Z pool, the ZFS is resilvered to redistribute the data.