Changed 1z0-820 Exam Questions

A: ZFS can automatically share file systems by setting the sharenfs property. Using this property, you do not have to modify the /etc/dfs/dfstab file when a new file system is shared. The sharenfs property is a comma-separated list of options to pass to the share command. The value on is an alias for the default share options, which provides read/write permissions to anyone. The value off indicates that the file system is not managed by ZFS and can be shared through traditional means, such as the /etc/dfs/dfstab file. All file systems whose sharenfs property is not off are shared during boot.

n Oracle Solaris 11, you can use the deduplication (dedup) property to remove redundant data from your ZFS file systems. If a file system has the dedup property enabled, duplicate data blocks are removed synchronously. The result is that only unique data is stored, and common components are shared between files.

How to Create an iSCSI LUN

The following steps are completed on the system that is providing the storage device.

• 1.Create a ZFS storage pool.

Example: target# zpool create sanpool mirror c2t3d0 c2t4d0

(C)2. Create a ZFS volume to be used as a SCSI LUN.

(D)3. Create a LUN for the ZFS volume.

Example:

target# stmfadm create-lu /dev/zvol/rdsk/sanpool/vol1

Logical unit created: 600144F0B5418B0000004DDAC7C10001

4. Confirm that the LUN has been created.

Example

target# stmfadm list-lu

LU Name: 600144F0B5418B0000004DDAC7C10001

(F) 5. Add the LUN view.

This command makes the LUN accessible to all systems.

target# stmfadm add-view 600144F0B5418B0000004DDAC7C10001

How to Create the iSCSI Target

This procedure assumes that you are logged in to the local system will contains the iSCSI target.

Note: The stmfadm command manages SCSI LUNs. Rather than setting a special iSCSI property on the ZFS volume, create the volume and use stmfadm to create the LUN.

(H) 1. Enable the iSCSI target service.

target# svcadm enable -r svc:/network/iscsi/target:default

(I) 2. Create the iSCSI target.

target# itadm create-target

A: ZFS encryption was introduced in ZFS Pool Version Number 30, Solaris Nevada b149.

Filesystem encryption since Solaris 11 Express

B: Deduplication was introduced in ZFS Pool Version Number 21, Solaris Nevada b128.

E: Booting From a ZFS Root File System

Both SPARC based and x86 based systems use the new style of booting with a boot archive, which is a file system image that contains the files required for booting. When a system is booted from a ZFS root file system, the path names of both the boot archive and the kernel file are resolved in the root file system that is selected for booting.