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2005-10-17 17:10:10
solaris volume manager roadmap-what's new:
1,manage storage in which one or more components is greater than 1 TB:use physical logical unit numbers that are greater than 1 TB in size, or create logical volumes that are greater than 1 TB
2,import a disk set from one system to another:use the metaimport command to import disk sets, even disk sets created on different system. this command uses expanded device ID support to automatically track disk movement within named disk sets
3,create and manage multi-owner disk sets:use the metaset -M to administer multi-owner disk sets in a sun cluster environment
solaris volume manager roadmap-storage capacity:
1,set up storage:create storage that spans slices by creating a RAID-0 or a RAID-5 volume. the RAID-0 or RAID-5 volume can then be used for a file system or any application, such as a database,that accesses the raw device
2,expand an existing file system:increase the capacity of an existing file system by creating a RAID-0 volume, then adding additional slices to that volume
3,expand an existing RAID-0 volume:expand an existing RAID-0 volume by concatenating additional slices to it
4,expand a RAID-5 volume:expand the capacity of a RAID-5 volume by concatenating additional slices to it
5,increase the size of a UFS file system on an expanded volume:expand a file system by using the growfs command to expand the size of a UFS
6,subdivide slices or logical volumes into smaller partitions,breaking the 8-slice hard partition limit:subdivide logical volumes or slices by using soft partitions
7,create a file system:create a file system on a RAID-0, RAID-1, RAID-5, or on a soft partition
solaris volume manager roadmap-availability:
1,maximize data availability:use solaris volume manager's mirroring feature to maintain multiple copies of your data. you can create a RAID-1 volume from unused slices in preparation for data, or you can mirror an existing file system, including root and /usr
2,add data availability with minimum hardware cost:increate data availability with a minimum of hardware by using solaris volume manager's RAID-5 volumes
3,increase data availability for an existing RAID-1 or RAID-5 volume:increase data availability for a RAID-1 or a RAID-5 volume, by creating a hot spare pool then associating it with the submirrors of a RAID-1 volume,or a RAID-5 volume
solaris volume manager roadmap-I/O performance:
1,tune RAID-1 volume readanwrite policies:specify the read and write policies for a RAID-1 volume to improve I/O performance for a given configuration
2,optimize device performance:create RAID-0 volumes to optimize I/O performance of devices that make up the stripe. the interlace value can be optimized for random or sequential access
3,maintain device performance within a RAID-0:expand a stripe or concatenation that has run out of space by concatenating a new component to it. A concatenation of stripes is better for I/O performance than a concatenation of slices
solaris volume manager roadmap-administration:
1,graphically administer your volume management configuration:use the solaris management console graphical user interface to administer your volume management configuration
2,graphically administer slices and file systems:use the solaris management console GUI to administer your disks and file systems,performing such tasks as partitioning disks and constructing UFS file systems
3,optimize solaris volume manager:solaris volume manager performance is dependent on a well-designed configuration. Once created, the configuration needs monitoring and tuning
4,plan for future expansion:because file systems tend to run out of space, you an plan for future growth by putting a file system into a concatenation
solaris volume manager roadmap-troubleshooting:
1,replace a failing slice:ifa disk fails, you must replace the slices used in your solaris volume manager configuration. in the case of RAID-0 volume, you have to use a new slice, delete and re-create the volume, then restore data from a backup.slices in RAID-1 and RAID-5 volumes can be replaced and resynchronized without loss of data
2,recover from boot problems:special problems can arise when booting the system, due to a hardware problem or operator error
