What happens to synchronous writes after they land in DRAM?
Synchronous writes to the Oracle ZFS Storage Appliance are not acknowledged immediately upon
landing in DRAM. Instead, they are acknowledged only once they are persistently stored on disk or
Which three RAID levels are not recommended when configuring a storage pool for OLTP (random)
workload and why?
A: Triple parity RAID, wide stripes. RAID in which each stripe has three disks for parity. This is the
highest capacity option apart from Striped Data. Resilvering data after one or more drive failures can
take significantly longer due to the wide stripes and low random I/O performance.
C: Double parity RAID is a higher capacity option than the mirroring options and is intended either
for high-throughput sequential-access workloads (such as backup) or for storing large amounts of
data with low random-read component.
D: RAID0 does not provide redundancy.
inkl.%20SUN)/390-2010-K-INF-Vogel-S7000_Einsatz-Praesentation.pdf p. 30
Which hardware failure cannot be prevented by the No Single Point of Failure feature on a ZFS
Adding a single JBOD to a double parity RAID-Z NSPF config makes it impossible to preserve NSPF
characteristics. However, you can still add the JBOD and create RAID stripes within the JBOD,
sacrificing NSPF in the process.
Which configuration should improve ZFS throughput and response time for stable write processing
(for example, O_SYMC)?
Each pool can contain multiple ZFS virtual devices (vdevs).
What time interval between a domain controller and appliance clocks causes a ZFS Storage Appliance
to not properly join an Active Directory domain?
In, the process of joining the domain, as well as user authentication, may fail if there is greater than a
five-minute time difference between the domain controller and the Oracle ZFS Storage Appliance.
storage/documentation/mswindows-integration-063012-1690774.pdf, page 11
What are three reasons to use Oracle Enterprise Manager for the Oracle ZFS Storage Appliance
Oracle Enterprise Manager Plug-in for Oracle ZFS Storage Appliance provides monitoring and
provisioning for all Oracle ZFS Storage Appliance models. In addition, the plug-in provides the
following primary features:
Which tool must you use to identify single or multiple devices at 100% utilization, minimum and
maximum device utilization, and device utilization balance, all over time (performance analysis)?
Quantized Heat Map: to identify single or multiple devices at 100% utilization, minimum and
maximum device utilization, and device utilization balance, all over time (performance analysis).
Which three Oracle solutions are supported by ZFS Storage Appliances?
When equipped with native QDR InfiniBand and 10Gb Ethernet connectivity options, the ZFS Storage
Appliance is ideal for reliably backing up Oracle Exadata.
The Oracle Private Cloud Appliance includes compute nodes, management nodes, virtual
networking, and integrated Oracle ZFS Storage ZS3-ES for internal storage.
The new OISP allows the Oracle Database NFSv4 client to pass ODM optimization information to the
NFSv4 server of the ZFS Storage Appliance. The ZFS Storage Appliance takes advantage of the ODM
optimization information to simplify database configuration and to further increase database
Oracle ZFS Storage Appliance Administration Guide (June 2014), pages 432, 463
What happens to a shadow migration job if a pool is failed over in a cluster, or both system disks fail
and a new head node is required while using the shadow migration feature?
Shadow migration is implemented using on-disk data within the filesystem, so there is no external
database and no data stored locally outside the storage pool. If a pool is failed over in a cluster, or
both system disks fail and a new head node is required, all data necessary to continue shadow
migration without interruption will be kept with the storage pool.
Which three actions can you perform to restore data from a snapshot?
B: Cloning a Snapshot.
A clone is a writable copy of a snapshot, and is managed like any other share. Like snapshots of
filesystems, it initially consumes no additional space. As the data in the clone changes, it will
consume more space. The original snapshot cannot be destroyed without also destroying the clone.
Scheduled snapshots can be safely cloned, and scheduled snapshots with clones will be ignored if
they otherwise should be destroyed.
C: Use the following procedure to roll back, or restore, a filesystem or LUN to an existing snapshot.
D: Filesystem snapshots can be accessed over data protocols at .zfs/snapshot in the root of the