Cloud Block Store Support Matrix for AWS

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Cloud Block Store Models and Capacity Points

For more detailed information about all the underlying components, see the Cloud Block Store Architecture & Underlying Resources article.

CBS//V20-R1 - For arrays launched with Purity version 6.X

Model

Usable

Effective (4:1)

CBS //V20A-R1

Base Config

27.2 TiB

(29.9 TB)

108.6 TiB

(119.5 TB)

CBS //V20A-R1

After Capacity NDU

57.5 TiB

(63.3 TB)

230.2 TiB

(253.1 TB)

CBS//V20-R1 - For arrays launched with Purity version 5.X

Model

Usable

Effective (4:1)

CBS //V20A-R1

Base Config

13.8 TiB

(15.2 TB)

55.2 TiB

(60 TB)

CBS //V20A-R1

After Capacity NDU #1

27.6 TiB

(30.4 TB)

110.4 TiB

(121.4 TB)

CBS //V20A-R1

After Capacity NDU #2

55.2 (TiB)

60.8 (TB)

220.8 TiB

(242.8 TB)

CBS//V10-R1 - For arrays launched with Purity version 5.X and 6.X

Model

Usable

Effective (4:1)

CBS //V10A-R1

Base Config

6.9 TiB

(7.6 TB)

27.6 TiB

(30.3 TB)

CBS //V10A-R1

After Capacity NDU

13.8 TiB

(15.2 TB)

55.2 TiB

(60.7 TB)

Supported Capabilities and Features

Feature/Capability	Support	Notes
Nesting CloudFormation template	No	Cloud Block Store is deployed using CloudFormation. Pure provides customers with a CloudFormation (CF) template yaml file. Cloud Block Store must be deployed using its own standalone CloudFormation template. It is important that customers do not nest the Cloud Block Store CloudFormation template in other CloudFormation templates as this can lead to unexpected configuration issues over time.
Terraform Deployment	Yes	See Using Terraform to Deploy Cloud Block Store in AWS for details.
Shut down or Stop (Suspend/Resume)	Yes	Stopping or Shutting down Cloud Block Store is supported by following the proper steps provided in here: How to Suspend/Resume a Cloud Block Store array in AWS Do not shut down underlying CBS ec2 resources.
Cloud Block Store termination/deletion	Support Driven: v5.3.0.aws0, 5.3.0.aws1, 5.3.0.aws2 Customer Driven: v5.3.3.aws0+	CBS with Purity version v5.3.0.aws0, 5.3.0.aws1, and 5.3.0.aws2 requires Pure Support in order to delete a CBS instance. CBS with Purity version 5.3.3.aws0 and higher can be deleted by customers. See CBS Deployment Guide for steps to terminate/delete a CBS instance.
Host ports	2 (iSCSI)	One per controller
Replication ports	2	One per controller
Management ports	2	One per controller
Deduplication	Yes
Compression	Yes
Thin Provisioning	Yes
Snapshots	Yes
CloudSnap creation	Yes
CloudSnap restore	Yes
Snap to NFS	No
Safemode	Yes
QoS (Fairness)	No
QoS (Limits)	Yes
Purity Run	No
WFS	No
Encryption	Yes
REST APIs	Yes
Controller SW NDU (Purity code)	Yes
Controller HW NDU	No	Non disruptive upgrade for Purity version (controllers) are fully supported Non disruptive upgrade from V10 to V20 is supported only by using ActiveCluster.
Capacity NDU *	Yes	Support Driven via CLI commands
Pure1	Yes
Pure1 Meta (Workload Planner)	No
VM Analytics	N/A	No VMware Cloud support for CBS
VMware Cloud	No
Changing Network IP or subnets	No	This is an AWS limitation
Boot from CBS	No	This is an AWS limitation. EC2 instances are only allowed to boot from native AWS storage.

Replication Features	Support	Notes
Async Replication	Yes Bi-directional supported between two CBS instances in different AZs or regions. Bi-directional supported between CBS instances and FlashArray.	AWS network charges may apply for replication across Availability Zones, VPCs, and/or regions. Egress charges may apply for any data sent from Cloud Block Store to FlashArray.
ActiveCluster (Synchronous Replication) **	Yes Bi-directional supported between two CBS instances in different AZs . Bi-directional supported between two CBS instances cross-clouds.	AWS network charges may apply for ActiveCluster configurations across Availability Zones and/or VPCs. For cross-cloud deployments consider the maximum latency not to exceed 11 ms RTT. Minimum Purity version to support cross-cloud on CBS: 6.1.6 or later. ActiveCluster between regions not supported due to latencies between regions.
Active-Active Async Replication	Yes CBS as Async target only. V20A-R1 only.	Minimum Purity version on FlashArray: 5.3.x or later. Minimum Purity version on CBS: 5.3.x or later.
ActiveDR	Yes Bi-directional supported between two CBS instances in different AZs or regions. Bi-directional supported between two CBS instances cross-clouds.	Minimum Purity version on CBS: 6.1.6 or later.

* Capacity upgrade is supported by adding additional virtual drives, seven at a time. However, capacity upgrade in-place from i3.2xlarge to i3.4xlarge is not supported.

** Cloud Block Store in an ActiveCluster configuration is not supported in Oregon if using with Pure1 Mediator. Customers who want to deploy Cloud Block Store with ActiveCluster in Oregon must use the On-Premises Mediator.

//V10AR1 Limits

General Limits

Description	5.3.x
Max # of volumes	500
Max # of hosts	300 (6.1.7+)
Max # of sessions	2400
Max # of host groups	50

Snapshots and Asynchronous Replication Limits

Description	5.3.x
Max # of volume snapshots per array	10,000
Max # of pgroups per array¹	250
Max # of pgroup snapshots per array¹	5000
Max # of remote connected arrays	1
Minimum configurable replication frequency²	1 hour

¹ Example for pgroup and snapshot limits: If you create a pgroup containing 100 volumes and then create a single pgroup snapshot for that pgroup then the following would be counted against each maximum:

1 pgroup consumed from the array-wide maximum number of pgroups
1 pgroup snapshot consumed from the array-wide pgroup snapshot maximum
100 volume snapshots consumed from the array-wide volume snapshot maximum

Note: In cases where a pgroup snapshot request will result in more volume snapshots than are supported by the FlashArray, the pgroup snapshot request and/or scheduled pgroup snapshot will fail.

² This is the minimum configurable replication frequency. Replication is a background process and priority is given to front-end workload. Maintaining the configured replication frequency depends on several factors such as the front-end workload on the array, the amount of data reduction, the amount of logical address space being replicated, and the available replication bandwidth.

Snapshot Offload (NFS/Cloud) Replication Limits

Description	5.3.x
Max # of volume snapshots on an offload target	10,000
Max # of offload targets configurable per FlashArray	1
Max # of FlashArrays configurable per offload target	4

Host Limits

Description	5.3.x
Max # of LUNs (volumes) per host	500
Max # of private LUNs connected per host (LUNs not connected to host groups)	500
LUN IDs assigned for LUN connections	LUNs 1-4095 for private or shared connections Note: Private connections start at 1 and count up. Shared connections start at 255 and count down, then up from 256 if 1-255 are in use.

Host Group Limits

Description	5.3.x
Max # of hosts per host group	No specific limit beyond max hosts
Max # of LUNs (volumes) per host group	500 Note: Private LUN connections count against host group max LUN limit. See above for LUN ID assignment.

Description

5.3.x

Max # of hosts per host group

No specific limit beyond max hosts

Max # of LUNs (volumes) per host group

500

Note: Private LUN connections count against host group max LUN limit. See above for LUN ID assignment.

Volume Limits

Description	5.3.x
Max volume size	4PB

//V20AR1 Limits

General Limits

Description	5.3.x
Max # of volumes	1000
Max # of hosts	300 (6.1.7+)
Max # of sessions	4800
Max # of host groups	100

Snapshot and Asynchronous Replication Limits

Description	5.3.x
Max # of volume snapshots per array¹	20,000
Max # of pgroups per array¹	250
Max # of pgroup snapshots per array¹	5000
Max # of remote connected arrays	4
Minimum configurable replication frequency²	30 minutes³

¹Example for pgroup and snapshot limits: If you create a pgroup containing 100 volumes and then create a single pgroup snapshot for that pgroup then the following would be counted against each maximum:

1 pgroup consumed from the array-wide maximum number of pgroups
1 pgroup snapshot consumed from the array-wide pgroup snapshot maximum
100 volume snapshots consumed from the array-wide volume snapshot maximum

Note: In cases where a pgroup snapshot request will result in more volume snapshots than are supported by the FlashArray, the pgroup snapshot request and/or scheduled pgroup snapshot will fail.

Snapshot Offload (NFS/Cloud) Replication Limits

Description	5.3.x
Max # of volume snapshots on an offload target	100,000
Max # of offload targets configurable per FlashArray	1
Max # of FlashArrays configurable per offload target	4

Host Limits

Description	5.3.x
Max # of LUNs (volumes) per host	500
Max # of private LUNs connected per host (LUNs not connected to host groups)	500
LUN IDs assigned for LUN connections	LUNs 1-4095 for private or shared connections Note: Private connections start at 1 and count up. Shared connections start at 255 and count down, then up from 256 if 1-255 are in use.

Host Group Limits

Description	5.3.x
Max # of hosts per host group	No specific limit beyond max hosts
Max # of LUNs (volumes) per host group	500 Note: Private LUN connections count against host group max LUN limit. See above for LUN ID assignment.

Description

5.3.x

Max # of hosts per host group

No specific limit beyond max hosts

Max # of LUNs (volumes) per host group

500

Note: Private LUN connections count against host group max LUN limit. See above for LUN ID assignment.

Volume Limits

Description	5.3.x
Max volume size	4PB