Part_1 - Module_2: TimeFinder Flashcards
What are the 3 TimeFinder solutions in the TimeFinder Suite
Clone
Snap
VP Snap
What technology is VP Snap based on?
TimeFinder Clone
VP Snaps are impacted by cache.
True of False?
True
VP Snaps provides the efficiency of snap technology with improved cache utlization and simplified pool management
VP Snaps must not be stored in the same thin pool as the source.
True of False?
False
VP Snaps can be stored in the Thin Pool OR can be stored in another pool of your choice
What Symmetrix technology is used for change tracking?
Track Table
TimeFinder Clone uses the Track Table to track changes made to the source.
True of False?
False
TimeFinder Clones create full-device and extent-level point in time copies.
TimeFinder Clone cannot incrementally resync between source and target.
True of False?
False
This is an advantage when using TimeFinder Clone for backups in that, when you re-clone the source volume, only the changes have to be synched to the target clone
What Raid Level Does TimeFinder not Support?
TimeFinder Supports
Raid1, Raid 5, Raid6, Raid 10
So I suppose technically it cannot support Raid 50
Why does the VMAX 10k not support TimeFinder Snap?
Becuase the VMAX10k is a Thin only Array.
If you have a high change rate on source volume, which is better Clone or Snap?
Clone
If you need to take a copy of data during peak IO activity, which would you use, clone or snap?
Snap is better during peak IO, especially if there is a low change rate
VP Snap is Superior to Snap becuase
- Space Efficiency
- Multiple Sessions share capcity allocations
What is EMC Symmetrix host-based control software used for?
- Configure Backup sessions
- Initiate PIT Copies
- Terminate TimeFinder Operations
Concisely Compare and Contrast
- Clones
- Snaps
- VP Snap
- Full Copy - High IO
- Pointer Based Copy - Moderate IO
- Pointer Based Copy using Thin Devices with Improved Cache Utilization
You must wait for theTimeFinder Clone Operation to complete before you can use the copy.
True of False?
False
The copy can be used immediatly, while time finder copies data in the background
With TimeFinder clone, how many concurrent copies can you have of a single open systems volume?
Bonus, how many copies can you have for a single Main Frame volume?
Open Systems: 16
Main Frame: 4
TimeFinder Snap cannot be used as a source for SRDF
True of False?
True
TimeFinder Clone also includes MF SNAP.
True of False?
True
Are Cascaded clones supported by TimeFinder?
Yes
What many copies of a volume can you have for Snap and VP Snap?
- Snap - 128
- VP Snap - 32
TimFinder /Mirror commands are still supported.
True of False?
True, there is emulation mode available for this legacy command
Describe the TimeFinder NOCOPY command
Only copy the data to the clone when the data is requested
If TimeFinder Clone allows you to have 16 copies of your data, why is it that if you use Differential Copy sessions you can only get 8 copies.
Because Differential Copies require 2 sessions.
One session to the Source and another session to the clone in which you are comparing.
Descibe these TimeFinder Clone operations
- Create
- Activate
- Recreate and Activate
- Restore
- Terminate
Create
- Create - Establish the relationship between source and target
- Clone is now active and immediatly available, production IO is processed against standard
- Clone is recreated - incrementally
- Restore - Restore data back to the source
- Terminate - Removes the clone
When talking about TImeFinder Clone, NOCOPY is also described as
Copy on Access
When using TimeFinder Clone, the Pre-Copy option is not the default.
True of False?
False,
The Pre-Copy option is the default setting
What are the 3 TimeFinder Clone copy options and which is default
- Copy on Access - (NOCOPY), only copies data as the sourcs is written to or a track on the target is accessed. This is the default
- Full Background - (COPY) only copies data to the target after the clone is activated
- Pre-Copy - Start copying data immediatly to the target even before activation of the Clone.
TimeFinder Clone requires BCV as target devices?
True of False?
False the target can be a Standard or a BCV
B.C.V.
Business Continuance Volume
TImeFinder Clones require that the target is the same ______ and the same ______.
Size and Emulation (FBA or CKD)
When using TimeFinder Clone, descirbe the difference in these two commands, when creating a clone
Pre-Copy
Full Copy
Both command are used to copy data to the clone sessions, however here is the differnce
- Pre-Copy is used before the activation of the clone.
- Full copy is used after the activatiion of the clone
When using TimeFinder Clone to restore the clone, which method between Full and Incrmental can be restored to a different volume other then the original source?
Full, Incrementals can only be restored back to the original source volume.
How many TimeFinder Clone pairs can you have
More then 50,000
What is a use case for Thick to Thin or Thin to Thick TimeFinder Clone operations?
Can be used as a converstion strategy, but the host will be impacted due to WWN and DeviceID changes when you use the clone.
Timefinder /CG canbe used with a database that spans multiple arryas?
True or False?
True or False?
What is the max number of clones per volume that is providing change data to a production volume
8
Consistant remote point in time operatoins with SRDF are called _____.
Splits
