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Nutanix > Data > Flashcards

Data Flashcards

1
Q

List supported data reduction techniques

A
  1. Compression
  2. Deduplication
  3. Erasure coding
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2
Q

Type of compressions

A
  1. Inline
  2. Post process
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3
Q

Compression considerations

A
  1. Configured at container level
  2. Can be switched on the fly
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4
Q

Dedup

A
  1. Container level
  2. Based on inline finger prints
  3. Distributed across all nodes
  4. can be switched on the fly
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5
Q

Erasure coding

A
  1. Only apply to cold data not accessed for 7 days
  2. Minimum of 4 nodes
  3. Configured at container level
  4. can be switched on the fly
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6
Q

What are hybride nodes?

A

Nodes with both SSD and HDD

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7
Q

Cluster Capacity

A

HDD+SDD

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8
Q

Tier Storage

A

Data is written to SSD and flush to HDD

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9
Q

Disk balancing

A
  1. balancing data across the nodes
  2. avoid capacity utilisation imbalance
  3. curator framework
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10
Q

Nutanix Snapshots

A
  1. Redirect on write
  2. Improved performance with snapshopt
  3. Replication is efficient and built-in
  4. Store locally, replicated remotely
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11
Q

Types of replications and DR options?

A
  1. Async
  2. Near sync
  3. Sync
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12
Q

Async replication

A
  1. RPO 60 min
  2. All hypervisors
  3. All licenses
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13
Q

Sync replication

A
  1. RPO 0
  2. ESXi & Hyper-V
  3. Ultimate licenses
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14
Q

Near Sync replication

A
  1. RPO 1 min
  2. All hypervisors
  3. Ultimate license
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15
Q

CVM Unavailable

A

1) IO is redirected to CVMs other nodes
2) VM is neither moved nor restarted

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16
Q

Disk Failure

A

1) Copy the impacted data from other nodes
2) Start self-healing

17
Q

Node Failure

A

1) VM is rebooted on another node
2) Impacted data copied from other nodes
2) Start self-healing

18
Q

Resilience and Self Healing

A
  1. Nutanix assumes eventual HW failure
  2. RF2 is common
  3. Watch out for warnings
  4. The larger the cluster the faster the rebuild

Nutanix (6 decks)

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