A customer has a requirement for a new solution to handle their growing storage requirements. The solution should have the ability to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.
The customer wants the solution to offer good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.
Which recommendation will meet the customer’s requirements?
- A . VNX for DB and VMware workloads, and Isilon for file system data
- B . Isilon scale-out and cluster as required
- C . VNX Unified platform with FAST Cache
- D . VMAX with FAST VP and a NAS Gateway
How much space is consumed by a 4 KB file when the file data is written to the Isilon cluster?
- A . 4 KB
- B . 8 KB
- C . 16 KB
- D . 32 KB
Which type of infrastructure does the Isilon scalable appliance connect to on the front-end?
- A . Ethernet
- B . FICON
- C . Infiniband
- D . Fibre Channel
A customer needs to consolidate 300 TB of home directory servers and shared file systems used by development and test groups. A key requirement is to prevent the systems from consuming all free capacity and impacting home directory content.
Which Isilon node configuration should be proposed?
- A . X-Series with SmartQuotas
- B . NL-Series with SmartQuotas
- C . S-Series with InsightIQ
- D . X-Series with SmartPools
You are helping a customer create a cost-effective Isilon solution. The customer environment includes high IOPS-intensive, random access file-based applications.
Which Isilon storage node type will meet the customer’s needs?
- A . S-Series
- B . NL-Series
- C . X-Series
- D . Performance Accelerator
How many layers are in the Isilon clustering architecture?
- A . 2
- B . 4
- C . 6
- D . 8
Which node type provides CPU, memory, and Fibre Channel connectivity?
- A . Backup Accelerator
- B . Performance Accelerator
- C . X-Series
- D . NL-Series
Which Isilon OneFS job, that runs manually, is responsible for examining the entire file system for inconsistencies?
- A . IntegrityScan
- B . MediaScan
- C . AutoBalance
- D . FlexProtect
A customer has a supported cluster with the maximum protection level.
How many simultaneous node component failures can Isilon OneFS sustain while still allowing full access to the entire file system and dataset?
- A . 1
- B . 2
- C . 3
- D . 4
A customer wants an N+3 protection level on their cluster.
What is the minimum number of nodes they need to achieve that level of protection?
- A . 3
- B . 6
- C . 7
- D . 8
What does Isilon OneFS use to re-write data when a disk read fails?
- A . Dynamic Sector Repair
- B . NVRAM
- C . Isilon Data Integrity
- D . CRC
An Isilon customer wants a job to periodically check disk sectors to ensure they can be read.
What should be recommended to the customer?
- A . MediaScan
- B . IntegrityScan
- C . Dynamic Sector Repair
- D . Isilon Data Integrity
An Isilon customer wants a job to periodically validates the checksum of every block in the file system.
What should be recommended to the customer?
- A . IntegrityScan
- B . MediaScan
- C . Dynamic Sector Repair
- D . Isilon Data Integrity
A company needs the ability to separate administrative rights from data access rights.
Which Isilon feature enables this functionality?
- A . RBAC
- B . SmartConnect
- C . SmartLock
- D . SmartQuota
Which Isilon OneFS administration methods are enforced by RBAC?
- A . Platform API, command line, and web administration interface
- B . Command line, InsightIQ, and web administration interface
- C . SNMP and web administration interface
- D . Command line, web administration interface, and SNMP
Independent of protocol, what does Isilon OneFS use to translate identities?
- A . ID mapping stack
- B . Role-based access control
- C . Access Zone
- D . SmartLock
Which protocol is integrated with Isilon OneFS to provide on-access file functionality?
- A . ICAP
- B . IANA
- C . HTTPS
- D . REST
Which impact policies are available on an Isilon cluster?
- A . High, Medium, Low, Default
- B . High, Medium, Low, Paused
- C . High, Medium, Low, Auto
- D . ASAP, High, Medium, Low
An Isilon storage administrator is concerned about capacity after ingesting 200 TB of file data. They recently added more nodes to the cluster and now want to auto-balance it as soon as possible.
The cluster utilization percentages for an average 24-hour period are:
– 45% during 00:00 – 08:59
– 60% during 09:00 – 17:00
– 85% during 17:01 – 23:59
The administrator wants to keep cluster utilization at a minimum.
Which Impact Policy settings should be used to quickly complete the job without impacting the production workload?
- A . Medium, Low, Low
- B . Medium, Medium, Low
- C . High, Medium, Paused
- D . High, High, Low
Which Isilon job has a default priority of ‘1’?
- A . MultiScan
- B . Media Scan
- C . FSAnalyze
- D . FlexProtect
A customer is planning an Isilon deployment for use with their Hadoop environment.
What is one advantage of using Isilon as the HDFS layer?
- A . Facilitates independent scaling of compute and storage nodes
- B . Provides single protocol access to data
- C . Integrates storage into Hadoop compute for more flexibility
- D . Allows the compute nodes to apply data protection
A customer has an Isilon cluster that they want to simplify a Hadoop workflow. The workflow analyzes large amounts of log data written to storage using FTP and results are viewed by Microsoft Windows clients?
How can this be achieved?
- A . FTP, SMB, and HDFS NameNode and DataNode protocol support on the same file system to enable each workflow step to access data from the same location avoiding data migration.
- B . SyncIQ to migrate the log data between an Isilon cluster and another Hadoop cluster, to retrieve results from the Hadoop cluster, and to store them in an SMB share.
- C . SmartConnect to direct clients to an external Hadoop NameNode and to SMB shares so data ingest, analytics, and results phases are transparently directed.
- D . FTP and SMB protocol support to provide log ingest and Windows clients; SmartPools will stub to HDFS helping to reduce the frequency of external data migration.
A company wants to reduce the footprint in their data center. They recently completed a proof of concept with Hadoop using Direct Attached Storage (DAS) for their Big Data initiative. You have determined that incorporating an Isilon cluster into their Hadoop environment would help in reducing this footprint.
Which Hadoop components can be consolidated onto the Isilon cluster to reduce the footprint?
- A . DataNode and NameNode
- B . DataNode and ComputeNode
- C . ComputeNode and NameNode
- D . NameNode and TaskTracker
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model. You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec, with a 30 days retention policy.
How many nodes of the same type will you need to add in order to meet the required changes and not exceed 70% raw capacity?
- A . 8 nodes
- B . 4 nodes
- C . 12 nodes
- D . 16 nodes
Your customer is moving from a Restaurant/Bar business model to a Restaurant/Casino business model.
You are helping architect the upgrade of a current 4-node X200 48 TB Isilon cluster, with 50% utilized for their video surveillance operations.
They want to upgrade from 15 FPS (NTSC) in H.264 codec, with a 15 days retention policy to 30 FPS (NTSC) in H.264 codec with a 30 days retention policy.
Which storage capacity would be the best suited to meet the required changes and utilize 65-75% capacity?
- A . 110 TB
- B . 80TB
- C . 140TB
- D . 50TB
You are working with a healthcare company that is interested in replacing all the backend storage for their PACS system.
In general, how should the solution be presented to the customer?
- A . VNX for image cache; Isilon NL-Series nodes for image archive
- B . Isilon A-Series nodes for image cache; Isilon NL-Series nodes for image archive
- C . Isilon NL-Series nodes for image cache and image archive
- D . VNX for image cache and image archive
You meet with the IT Director of a large single site campus. The IT department has recently taken over Physical Security from the facilities department and plans a complete overhaul of the surveillance solution. They are looking to you as a storage architecture expert to provide the correct amount of storage needed. The IT Director asks you what items they need to provide in order to size this solution.
What data do you require from the customer?
- A . Resolution
CODEC
Frames Per Second (fps)
Number of Devices
Retention Time - B . Pixel Count
CODEC
Color Sampling
Frames Per Second (fps)
Number of Devices
Retention Time - C . Pixel Count
CODEC
Color Sampling
Frames Per Second (fps)
Number of Devices
Video Management System
Evidence Collection Period - D . Bit rate per camera
Camera Manufacturer
Video Management System
Retention Time
A four-node Isilon cluster is being used in a Hadoop workflow with a parity protection of N+2:1. The HDFS protocol has been enabled and is being used to access data.
How many additional copies of data are written into the Isilon cluster using HDFS?
- A . None
- B . One
- C . Three
- D . Two
Your customer has a new business unit. They are gathering web log files to be analyzed. They are using Hadoop to do the analysis of the logs. The IT department is centrally storing the log files on a 5-node Isilon cluster. They have enabled the Hadoop cluster to access the files directly on the Isilon storage. The nodes are X400’s with two SSD drives in each node and 96GB of RAM.
How many DataNodes does the Isilon cluster have?
- A . Five
- B . One
- C . Three
- D . Two
A media and entertainment company has asked for help in creating a new Video On Demand (VOD) storage system. The storage would be delivered to 5000 subscribers simultaneously. They would like to store 5000 hours of full length, High Definition (HD) movies.
What would be the best price-to-performance nodes for this solution?
- A . X400 with no SSD and 96GB RAM
- B . X200 with no SSD and 48GB RAM
- C . Mixed X400 48GB RAM and NL400 24GB
- D . X400 with 1.6TB SSD and 24GB RAM
Your customer has observed a degradation in response time while browsing for media files within the Production Media folder of the Isilon cluster. That directory now contains over five million files. It was confirmed that there are no network or edit station related causes.
What changes to the Isilon cluster will best accelerate the browsing performance?
- A . Add Solid State Drives (SSDs) to the nodes
- B . Add A-Series Performance Accelerator nodes
- C . Upgrade node access to 10 Gbps
- D . Upgrade RAM on the nodes
While validating the value (VTV) with a large educational customer, they have decided they would like to add a Disaster Recovery (DR) site to their existing Isilon environment. The existing cluster contains six X-Series nodes. They plan to have all workflows replicated to the DR site and both clusters will have identical shares, exports, and user authentication. The customer would like to test DR failover every six months by running their production environment from the DR site.
What would you recommend for the DR solution?
- A . SyncIQ and identical cluster at the DR site
- B . SmartConnect and NL-Series nodes at the primary site
- C . SyncIQ and NL-Series nodes at the DR site
- D . Equal number of S-Series nodes at the primary site
A hospital is considering using Isilon to store their archived medical images and Genomic Sequencing data. They currently have 56 TB of PACS images and 24 TB of genomic data, and expect to double their capacity requirements this year. They will replicate to a DR cluster, and plan to use N+2 protection. The production workload needs to be run at either site.
Which minimum cluster configuration, at each site, including software, would meet this customer’s environment?
- A . Five X400 (2 TB drives) nodes with SyncIQ.
- B . Four NL400 (3 TB drives) nodes with SyncIQ.
- C . Seven X200 (3 TB drives) nodes with SyncIQ and SnapshotIQ
- D . Five X400 (2 TB drives) nodes with SnapshotIQ.
A hospital is considering using Isilon to store their long-term archive data for their GE PACS application. They currently have two million 17 MB studies. They expect capacity requirements to be 50% compounded growth per year. They plan to use N+2:1 protection, and would like this sized for three years of growth.
Which minimum cluster configuration would meet this customer’s environment?
- A . Five NL400 (1 TB drive) nodes
- B . Four NL400 (2 TB drive) nodes
- C . Five X200 (3 TB drive) nodes
- D . Three X400 (3 TB drive) nodes
Which protocols are supported by Isilon OneFS for file access?
- A . NFS, HDFS, HTTP, SMB
- B . SMB, HTTP, SMTP, HDFS
- C . HDFS, NFS, iSCSI, SNMP
- D . FTP, NFS, SMB, FC
Which Isilon OneFS protection level allows you to withstand two drive failures but no more than one complete node failure?
- A . N+1
- B . N+2
- C . N+2:1
- D . N+3:1
An Isilon customer expressed an interest in more effectively managing their storage. Specifically, they would like to plan for future growth.
Which tool would allow the customer to forecast capacity requirements?
- A . InsightIQ
- B . Isilon SNMP MIB
- C . SyncIQ
- D . SmartPools
Which Isilon feature provides the ability to build a cluster using different node types and tiers to meet a customer’s business objectives?
- A . SmartPools
- B . SmartQuota
- C . SmartConnect
- D . SnapshotIQ
A
Explanation:
Smartpools is the licensed feature that enables using different node types.
At which level can retention periods be applied with Isilon SmartLock?
- A . Directory
- B . Node
- C . File system
- D . Cluster
A customer is trying to get Isilon SyncIQ to run on the two clusters they just purchased.
However, they are experiencing some problems. They have asked you to explain how the SyncIQ licensing works.
What information can be provided to the customer?
- A . SyncIQ license is required on both the source and target clusters
- B . SyncIQ license is required on the source but not on the target cluster
- C . SyncIQ license is required on target but not on the source cluster
- D . SyncIQ license is included in the OneFS license; no additional license is needed
A
Explanation:
The SynchIQ license is required on "both" the source and target clusters.
Where are file system operations initiated on an Isilon node?
- A . L1
- B . NVRAM
- C . L2
- D . Disk
For concurrent I/O, how do SmartCache and Endurant Cache differ?
- A . Endurant Cache sends an acknowledgement to the client immediately after mirroring writes in NVRAM
- B . Endurant Cache waits for acknowledgement from all nodes before copying to L2 cache
- C . SmartCache immediately commits the write to NVRAM on the local node and one peer node
- D . SmartCache uses sub-file, granular locking whereas Endurant Cache locks the entire file
Where is caching for disk blocks staged on an Isilon node?
- A . L2
- B . CPU
- C . L1
- D . RAID
A customer is looking for a new storage solution to handle their growing storage requirements. The system should be able to cover storage needs for the next three years. The environment consists of 100 TBs of file system data spread across five file systems. On average, the file systems grow 1 TB a month. In addition, they have a large VMware cluster supporting 200 VMs and a highly transactional database.
The customer is looking for a solution that would provide good performance, scalability, manageability, and be cost-effective. The sales team is looking to you to recommend a solution.
Which recommendation will meet the customer’s requirements?
- A . Isilon for file system data, and a VNX for DB and VMware workloads
- B . Isilon cluster and scale-out as required
- C . VNX Unified platform with FAST Cache
- D . VMAX with FAST VP and a NAS Gateway
What is the relative latency of a cache hit to L1 cache compared to a hit to L2 cache in an Isilon cluster?
- A . 2x
- B . 5x
- C . 10x
- D . 25x
Where does SmartCache stage its write cache?
- A . SSD
- B . DISK
- C . NVRAM
- D . DRAM
Which type of data is stored in Endurant Cache of an Isilon node?
- A . Write
- B . Volume
- C . Read
- D . Protection
What is the overhead impact on the physical capacity when configuring data protection at +2:1 on a 6node Isilon cluster?
- A . 1/2
- B . 1/4
- C . 1/5
- D . 1/6
A customer has 10 nodes in a cluster using N+2 protection.
What is the minimum number of nodes required to be online and in communication with one another to satisfy quorum?
- A . 4
- B . 5
- C . 6
- D . 7
In an Isilon cluster for N+2 protection, what is the minimum number of nodes?
- A . 3
- B . 5
- C . 6
- D . 9
A customer has a 7-node Isilon cluster configured with N+2:1 protection.
How many nodes can be offline with the data accessible and fully writeable?
- A . 1
- B . 2
- C . 3
- D . 0; all nodes must be online
What is the minimum number of connected and available nodes required to maintain quorum in a 25-node Isilon cluster?
- A . 10
- B . 12
- C . 13
- D . 17
An Isilon customer experienced a node failure. The failure requires that the affected node be permanently removed from the cluster.
What will occur in the cluster upon failure of the node?
- A . OneFS will assume it is a temporary failure and the data will not be protected at the appropriate levels.
- B . Cluster will detect the node failure and automatically begin the SmartFail process.
- C . FlexProtect will be activated and data will be protected at the appropriate levels.
- D . Nothing. When data protection levels are set appropriately, OneFS will always protect data without manual interaction.
A customer experiences a system failure on an Isilon storage node. However, the disk drives in the node are not affected.
What is the preferred method for restoring cluster integrity?
- A . Engage EMC support to perform a Disk Tango process to move drives, journal, and boot volumes to a replacement chassis
- B . Allow OneFS to proceed with its automatic SmartFail process to re-protect the failed node
- C . Migrate the disks from the failed node into spare drive bays on other nodes
- D . Initiate a manual SmartFail process on the node as it is not started automatically
A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster.
How much capacity will be used to store a 320 KiB file?
- A . 320 KiB
- B . 448 KiB
- C . 576 KiB
- D . 640 KiB
A customer plans to deploy N+2:1 protection on a 5-node Isilon cluster.
How much capacity will be used to store a 1024 KiB file?
- A . 1024 KiB
- B . 1280 KiB
- C . 1792 KiB
- D . 1920 KiB
An Isilon customer’s administrator created the nested directory structure, shown in the exhibit, using SmartQuotas.
However, a user needs to write an additional 650 GB of data to "/ifs/data/acct/recv".
Which steps will enable the user to complete this task?
- A . Directory1 QuotA. Increase to 1400 GB
User QuotA.Increase to 1000 GB on Subdirectory2 - B . User QuotA. Decrease to 650 GB on Subdirectory2
Directory1 QuotA.Decrease to 1650 GB - C . User QuotA. Decrease to 400 GB on Subdirectory1
Directory1 QuotA.Increase to 1650 GB - D . Directory1 QuotA. Increase to 1350 GB
User QuotA.Decrease to 1000 GB on Subdirectory1
Your customer uses an existing Isilon cluster consisting of five NL-Series nodes to source broadcast media files for playback and streaming.The customer reports that the playback pauses and stutters regularly. It has been confirmed that there are no network or playback system issues.
Which of the choices listed is the appropriate choice to address the playback issues?
- A . Add three or more S-Series Nodes
- B . Upgrade OneFS to the latest version
- C . Enable SmartConnect Advanced
- D . Enable Level 2 Caching
While configuring Isilon SmartConnect, a customer determined that their workload primarily consists of long-lived NFS and SMB connections.
Which load-balancing policy will provide the most efficient client distribution?
- A . Random Selection
- B . CPU Utilization
- C . Network Throughput
- D . Connection Count
If Isilon SmartConnect is being configured in a customer environment, which records are required for a supported implementation?
- A . A SmartConnect Service IP host record and a zone delegation for the SmartConnect zone delegated to the SSIP
- B . An overloaded host record with each SmartConnect zone member’s IP address and an SRV record to provide resolution services
- C . A SmartConnect Service IP host record and a corresponding PTR record for each SmartConnect zone
- D . A SOA record for the SmartConnect Service IP and a corresponding CNAME record for each SmartConnect zone
A customer currently has 10 HPC nodes. They plan to purchase a 5-node Isilon X400 cluster for an HPC application running on Linux. They will persistent mount the Isilon cluster through NFSv3.
Which recommended configuration addresses the customer’s requirements for high availability and throughput?
- A . SmartConnect Advanced with Round Robin connection balancing and dynamic addressing
- B . SmartConnect Basic with Round Robin connection balancing and dynamic addressing
- C . SmartConnect Advanced with Network Throughput connection balancing and dynamic addressing
- D . SmartConnect Advanced with Round Robin connection balancing and static addressing
A customer is configuring Isilon SmartConnect. They have determined that their workload primarily consists of short-lived connections, such as HTTP and FTP.
Which load-balancing policy provides the most efficient client distribution?
- A . CPU Utilization
- B . Round Robin
- C . Connection Count
- D . Random Selection
An Isilon customer has an environment supporting a wide range of different workloads. They want to assign clients to performance tiers based on the resources needed.
What can the customer use to meet this requirement?
- A . SmartConnect Zones
- B . Load Balancing
- C . Client Connection Zone
- D . SmartPools Advanced
If Dynamic IP Address Allocation is being configured in Isilon SmartConnect, which policy setting needs to be determined?
- A . Rebalance
- B . Load Balancing
- C . Static
- D . Dynamic
An Isilon cluster component has the following characteristics:
– Spans 3 – 40 nodes
– Logical grouping of drives
– Automatically assigned
– Intelligently distributes disks to manage performance
Which cluster component is described?
- A . Disk pool
- B . Node pool
- C . Smart pool
- D . SSD pool
An Isilon customer has an 8-node cluster of older X-Series nodes.
They plan to upgrade the nodes over the next three years in the following stages:
– Stage 1: Add 2 X-Series nodes to meet performance growth
– Stage 2: Add 4 NL-Series nodes to meet archive capacity growth
– Stage 3: Add 10 New X-Series nodes as a hardware refresh
– Stage 4: Remove older X-Series nodes
At which point will a SmartPool license be required?
- A . Stage 1
- B . Stage 2
- C . Stage 3
- D . Stage 4
If business objectives such as value and SLAs are considered, which Isilon license feature provides the ability to manage performance and the cost of data in a cluster?
- A . SmartPools
- B . SmartConnect
- C . SyncIQ
- D . SmartQuota
An Isilon customer wants the ability to provide low latency I/O for their files due to a workflow involving small, random reads and writes.
Which SSD strategy is most effective for this use case?
- A . Data on SSDs
- B . Metadata read acceleration
- C . Metadata read/write acceleration
- D . Avoid SSDs
By default, which method is used by Isilon OneFS for SSDs?
- A . Metadata read acceleration
- B . Metadata read/write acceleration
- C . Data on SSDs
- D . Avoid SSDs
A customer has a data retention period of three years. They want a solution in which files cannot be deleted, changed, or modified.
Which Isilon SmartLock version should they implement?
- A . Compliance version
- B . Standard version No WORM
- C . Enterprise version
- D . Standard version with WORM
An Isilon customer implemented a retention period at the directory level. They set individual retention periods on individual files within those directories.
Which retention periods will be enforced?
- A . Latest retention period
- B . Earliest retention period
- C . File-level retention
- D . Directory-level retention
An Isilon customer wants to more effectively manage their storage and thereby achieve performance improvements.
Which tool will help improve workflow performance on their cluster?
- A . InsightIQ
- B . Isilon SNMP MIB
- C . SyncIQ
- D . SmartPools
In an Isilon environment, how is InsightIQ installed?
- A . Deployed as a virtual appliance
- B . Installed on a FreeBSD server
- C . Deployed on a Windows 64-bit server
- D . Installed on an Isilon cluster
On an Isilon cluster, how much space should be reserved for snapshots by default?
- A . 0%
- B . 5%
- C . 10%
- D . 20%
How does Isilon SnapshotIQ use storage for snapshots?
- A . Through Changed Block Tracking and only changed data blocks are saved
- B . Works on the file level and saves the entire file no matter what has changed
- C . Works with 4 KiB blocks and will always use that amount of storage, no matter what has changed
- D . Through Changed Block Tracking and always uses a 4 KiB block, even if the data changed is less than that amount
A customer is considering moving their NAS data over to Isilon systems. They want to know if the Isilon systems have any limitations regarding snapshots.
What explanation can be provided?
- A . There is no hard limit on snapshots.
- B . There is a limit of 1024 snapshots per cluster.
- C . There is a limit of 2048 snapshots per cluster.
- D . There is a limit of 2048 snapshots per directory.
A customer created one month of snapshots; one snapshot every 8 hours for 30 days on an Isilon cluster using SnapshotIQ. They are now deleting the snapshots randomly and experiencing overhead to the cluster.
How can the snapshots be removed while avoiding the overhead caused by this process?
- A . Delete the snapshots in order
- B . Use SmartPools to move the snapshot data to a different tier
- C . Snapshots cannot be deleted
- D . Remove the directory
An Isilon customer wants to have different snapshot policies and schedules on the same directory.
Why is this possible on an Isilon cluster?
- A . SnapshotIQ snaps at the directory level rather than the volume level
- B . All snapshots are scheduled through the command line interface
- C . A third-party product is used by SnapshotIQ to create different schedules and policies on a directory
- D . SnapshotIQ snaps at the volume level rather than the directory level
Using Isilon SnapshotIQ, how many snapshots can be created at the directory level?
- A . 8
- B . 96
- C . 256
- D . 1024
A customer has an SMB file directory with 375 TB of data on the primary cluster with a protection level of N +3:1. They want to replicate this directory to the secondary cluster. They are interested in the possibility of setting protection levels on the target cluster.
Which target directory protection level information can be provided?
- A . Does not need to match the source and is configured separately on the target cluster
- B . Must match the source and is configured separately on the target cluster
- C . Cannot be altered and is controlled by SyncIQ
- D . Can be altered by the command line interface and is controlled by SyncIQ