Dell Unity 300 Unity™ Family Configuring Replication
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- Dell Unity 300 | Unity™ Family Configuring Replication - Page 1
Dell Unity™ Family Configuring Replication Version 5.2 Part Number: H14974 April 2022 Rev. 09 - Dell Unity 300 | Unity™ Family Configuring Replication - Page 2
data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2016 - 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other - Dell Unity 300 | Unity™ Family Configuring Replication - Page 3
...6 Snapshot replication in advanced replication topologies 12 Dell MetroSync for Unity...13 Using replication for disaster recovery...13 Using replication connections...30 About replication sessions...31 About replication support for thin storage resources with data reduction 32 Chapter - Dell Unity 300 | Unity™ Family Configuring Replication - Page 4
...60 View replication sessions...64 Change replication session settings...65 Pause replication sessions...68 Resume replication sessions...68 Manually synchronize replication sessions...70 Delete replication sessions...70 Fail over replication sessions...71 Fail back replication sessions...72 - Dell Unity 300 | Unity™ Family Configuring Replication - Page 5
feature documentation or release notes, go to Unity Technical Documentation at: dell.com/unitydocs. Troubleshooting For information about products, software updates, licensing, and service, go to Support (registration required) at: dell.com/ support. After logging in, locate the appropriate product - Dell Unity 300 | Unity™ Family Configuring Replication - Page 6
in advanced replication topologies • Dell MetroSync for Unity • Using replication for disaster on your Unity storage system. Along with relevant concepts and instructions to configure resources. NOTE: In general, Unity OE versions 4.0 or later support replication interoperability. However, the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 7
Manual-Use this mode when you want to manually 24 hours). The default RPO is set at Unity 300(F) to a Unity 300(F) ● Unity 350F, 380(F), 400(F), or 500(F) to a Unity 350F, 380(F), 400(F), or 500(F) ● Unity 450F, 480(F), 550F, 600(F), 650F, 680(F), or 880(F) to a Unity 450F systems support data - Dell Unity 300 | Unity™ Family Configuring Replication - Page 8
, LDAP org string) NFS export Yes No No NFS export for Local snapshots No No Yes CAVA Yes No No NDMP user/password No No Yes ASA user/password Yes No No File system level mount options saved into NAS server configuration lists file system level mount options that are also saved - Dell Unity 300 | Unity™ Family Configuring Replication - Page 9
, in Unisphere the system shows the source value as default for destination. It can be changed. -type supportedProtocols Destination or 4.4 to OE version 5.x without any snapshot replication. Asynchronous replication supports the replication of read-only user snapshots to either a local or - Dell Unity 300 | Unity™ Family Configuring Replication - Page 10
support asynchronous replication of snapshots, both the source and destination systems must be running Unity the last sync (RPO) time can be manually selected for replication and are included in the , a connectivity issue, or other system problem), checkpoint snapshots created on the source are - Dell Unity 300 | Unity™ Family Configuring Replication - Page 11
with the file system. File-based replication session actions On Unity systems running OE version 4.2, the following asynchronous replication actions therefore, the sizes are different: 1. The source file system is manually resized while communication is disconnected (only the source could be resized - Dell Unity 300 | Unity™ Family Configuring Replication - Page 12
may be rejected. A group replication session operation on a NAS server supports up to 500 file system replication sessions in such a way that any changes to the NAS server configuration have occurred before the default update runs, you can manually issue an on demand update of the view of the NAS - Dell Unity 300 | Unity™ Family Configuring Replication - Page 13
Yes RPO (in minutes) 60 180 240 480 360 720 960 1440 Dell MetroSync for Unity Dell MetroSync for Unity is a collection of features that provide a file resource disaster recovery solution. Unity are: ● NAS server and file system synchronous replication ● File synchronous replication support for - Dell Unity 300 | Unity™ Family Configuring Replication - Page 14
exist, the destination resource should be manually restored to any of the replicated user or VMFS datastore that was created on a Unity OE release before 5.1 and replicated by asynchronous destination NAS servers are the same and both are in service) can be avoided. The duplicate IP issue may not - Dell Unity 300 | Unity™ Family Configuring Replication - Page 15
regarding the planned failover command. NOTE: Unplanned failover may cause duplicate IP addresses for the NAS server. If the NAS server is running with CIFS support, it may cause a duplicate CIFS or SMB server as well. IP addresses must be well planned and assigned to avoid this issue. ● If the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 16
replication to minimize disruption during a planned downtime window, ensure that the NAS server and associated file system replication sessions are manually synchronized first and then failed over. Follow these steps: 1. Synchronize the NAS server replication session using the Sync option - Dell Unity 300 | Unity™ Family Configuring Replication - Page 17
must earlier establish common base snapshots on the source and destination systems either manually or by creating a snapshot schedule. NOTE: Re-creating NAS server replication sessions using common base snapshots is not supported. For these types of sessions, a full copy must be used. A full copy is - Dell Unity 300 | Unity™ Family Configuring Replication - Page 18
restarts the replication session in the original direction. NOTE: A snapshot of a consistency group or VMFS datastore that was created on a Unity OE release before 5.1 and replicated by asynchronous replication cannot be used as a common base. File-based synchronous replication In file-synchronous - Dell Unity 300 | Unity™ Family Configuring Replication - Page 19
Advanced replication topologies for file replication Unity supports advanced replication topologies, that is, fan-out (1 to many) replication and cascading (multihop) file replication. Fan-out supports a maximum of four replication sessions on the same file storage object between two remote systems, - Dell Unity 300 | Unity™ Family Configuring Replication - Page 20
(an individual file system of NFS datastore). However, some restrictions apply to existing replication operations: ● This feature only supports file storage objects and does not support block storage objects. ● All systems joining the multiple sessions either in fan-out (star) or cascaded mode must - Dell Unity 300 | Unity™ Family Configuring Replication - Page 21
Unity supports configuring synchronous replication sessions of a NAS server and its file systems to one Unity selected as Used as backup only in Unisphere by default when synchronous replication is already enabled. If you are routinely taken using the manual or automatic Recovery Point Objective - Dell Unity 300 | Unity™ Family Configuring Replication - Page 22
Site A to Site B during the synchronous replication session. However, you must manually create a snapshot on source production Site A and sync that snapshot to both site. ● Asynchronous replication to another site for backup is supported on Unity systems with OE versions 4.4 or later. ● The remote - Dell Unity 300 | Unity™ Family Configuring Replication - Page 23
that snapshot, the remove operation fails. For more information about manually removing an internal file system snapshot, see NOTE: Internal snapshots third site replication When a storage object is created for MetroSync for Unity as the destination, that storage object can be used to create - Dell Unity 300 | Unity™ Family Configuring Replication - Page 24
The following figure and table show a simple example of cascade mode in a MetroSync configuration. Each lettered box represents a system running OE version 5.x. The thick solid lines between boxes represent asynchronous replication sessions, and the thin solid line between boxes represents a - Dell Unity 300 | Unity™ Family Configuring Replication - Page 25
asynchronous. ● A planned failover of fan-out and cascaded topologies is supported unless the failover results in a multidestination topology. For example, in an might not be sent to downstream to a third site. This problem might occur if there is a synchronous replication session between the initial - Dell Unity 300 | Unity™ Family Configuring Replication - Page 26
Upgrade a system that has an advanced replication topology If you have an advanced replication topology (fan-out or cascade), you must follow a specific sequence when performing a nondisruptive upgrade (NDU). When you upgrade such a system to OE 5.2, you must upgrade the backup sites before the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 27
storage system. Use the native Replication feature in Unisphere to configure replication for block or file storage resources. The system supports asynchronous and synchronous replication of all storage resources, including file systems, NAS servers, LUNs, LUN groups, VMware VMFS datastores, VMware - Dell Unity 300 | Unity™ Family Configuring Replication - Page 28
choose to remove the associated replication sessions manually. 4. Create a remote replication session For more information, see the Unisphere CLI User Guide. 2. Zone the Synchronous Replication FC ports between you want: ● For synchronous replication support (Synchronous connection mode), use the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 29
source Unity system and two remote Unity systems with OE version 4.4 or later should be installed and task NOTE: Only remote replication is supported for synchronous replication. Steps 1. Create as Used as backup only in Unisphere by default when synchronous replication is already enabled. When - Dell Unity 300 | Unity™ Family Configuring Replication - Page 30
a replication interface with an IPv4 or IPv6 address. Replication is supported between like type IP addresses. For example, you can set up spb_fc4, spa_fc4 For more information, see the Unisphere CLI User Guide. NOTE: Before creating a replication interface or connection for synchronous replication - Dell Unity 300 | Unity™ Family Configuring Replication - Page 31
A and SP B on the source and destination systems. ● Both-Supports synchronous replication of file and block storage resources using the Sync Replication For automatic synchronization, initial synchronization is enabled by default. For manual synchronization, there is no initial synchronization. An - Dell Unity 300 | Unity™ Family Configuring Replication - Page 32
on the source system (either manually through Unisphere, CLI, RESTful command destination side at those times. About replication support for thin storage resources with data reduction or LUN group meet this criteria, thin is selected by default for the destination LUN or LUN group. You can choose to - Dell Unity 300 | Unity™ Family Configuring Replication - Page 33
synchronization states that describe the state of the user data on the destination storage resource. These states are useful for troubleshooting. However, for replication session management, it is recommended that you check the operational status. For accurate information about the synchronization - Dell Unity 300 | Unity™ Family Configuring Replication - Page 34
The default code page in Unity systems does not need to be changed for either NFSv4 or SMB clients. NFSv4 clients support only UTF-8 and SMB clients support only Unicode. With Unity systems OE version 5.0.3 and later, the code page of the Unity system can be changed through the same service command - Dell Unity 300 | Unity™ Family Configuring Replication - Page 35
information, see the Unisphere CLI User Guide. NOTE: RecoverPoint and the native and SPB Port 4 SPB I/O Module 0 Port 0 are supported. ● It is recommended to have a separate FC port for FC SP ownership on the destination LUN. Ensure that you manually set the SP ownership for the source LUN to the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 36
SPB on the target Unity system. Once the mobility interface is configured, you can create the import connection between the Unity system and the VNX the VLAN ID only when you have configured the network switch port to support VLAN tagging of multiple VLAN IDs. Steps 1. Under Protection & Mobility, - Dell Unity 300 | Unity™ Family Configuring Replication - Page 37
system. ● For local replication, the password associated with your user account. ● the following options: ○ Asynchronous ○ Manual ○ Synchronous ● The Recovery Point Objective support data reduction, then the destination file system is also thin. ○ If both the source and destination systems support - Dell Unity 300 | Unity™ Family Configuring Replication - Page 38
replication session role. ● Only one local or loopback asynchronous session is supported and the associated resource does not have to be in destination mode create a new file system, Unisphere creates a replication by default. Delta synchronization after failover Beginning with OE version 5.1, you - Dell Unity 300 | Unity™ Family Configuring Replication - Page 39
of a consistency group or VMFS datastore that was created on a Unity OE release before 5.1 and replicated by asynchronous replication cannot be used as that were created according to an established schedule or can be manually created snapshots of both the source and destination systems. About this - Dell Unity 300 | Unity™ Family Configuring Replication - Page 40
, see the Unity Service Commands Technical Notes. ○ In cascade mode: ■ With A->B and B->C cascade mode replication session configured, session A->B and B->C concurrent delete is supported. ■ With A->B and B->C cascade mode replication session configured, when deleting A->B first, the destination - Dell Unity 300 | Unity™ Family Configuring Replication - Page 41
OE version 5.2 are paused. ○ Other existing replication operations are supported as in earlier OE versions. ● Resume ○ Only one active server. 2. Perform one of the following actions: NOTE: On Unity systems running OE version 4.2, the following asynchronous replication actions affect both - Dell Unity 300 | Unity™ Family Configuring Replication - Page 42
first, then restarts the snapshot copy by copying the differences between the common base snapshot and the snapshot to be transferred. Manually synchronize a session (for asynchronous replication only) Select Sync. Changes since the last sync are replicated to the destination system. NOTE: If - Dell Unity 300 | Unity™ Family Configuring Replication - Page 43
. NOTE: After the replication session has been created and the source NAS server is using an LACP/FSN configuration, you must do the following: 1. Manually edit the Network settings in the Properties of the NAS server on the destination system. 2. Select Override address and an interface to use. If - Dell Unity 300 | Unity™ Family Configuring Replication - Page 44
uses the ID to accept packets that have VLAN tags. The value range is 1-4095. NOTE: If no VLAN ID is specified, which is the default, packets do not have VLAN tags. The Unisphere online help provides more details about VLANs. IP address Subnet mask Gateway MAC address SP IPv4 or - Dell Unity 300 | Unity™ Family Configuring Replication - Page 45
uses the ID to accept packets that have VLAN tags. The value range is 1-4095. NOTE: If no VLAN ID is specified, which is the default, packets do not have VLAN tags. The Unisphere online help provides more details about VLANs. -addr Specify the IP address for the interface. The prefix - Dell Unity 300 | Unity™ Family Configuring Replication - Page 46
Example The following command creates a replication interface. The interface receives the ID IF_1: uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /net/if create -type replication -port eth1_spb -addr 10.0.0.1 -netmask 255.255.255.0 -gateway 10.0.0.1 Storage system address: 10.0.0.1 Storage system - Dell Unity 300 | Unity™ Family Configuring Replication - Page 47
Preferred = yes 2: ID = if_1 Type = file NAS server = nas_1 Port = eth1_spb VLAN ID = 1 VLAN MTU size = 1500 IP address = 192.168.1.2 Subnet mask = 255.255.255.0 Gateway = 192.168.1.254 IPv4 mode = static IPv4 address = 192.168.1.2 IPv4 subnet mask = 255.255.255.0 IPv4 - Dell Unity 300 | Unity™ Family Configuring Replication - Page 48
is 1-4095. NOTE: If no VLAN ID is specified, which is the default, packets do not have VLAN tags. The Unisphere online help provides more details on is optional for both IPv4 and IPv6. This qualifier configures the default gateway for the specified port's SP. Example The following command changes - Dell Unity 300 | Unity™ Family Configuring Replication - Page 49
HTTPS connection Operation completed successfully. Manage remote storage systems Configure remote storage systems that connect to the system to which you are logged in. The system uses the configuration to access and communicate with the remote system. For example, to use remote replication, - Dell Unity 300 | Unity™ Family Configuring Replication - Page 50
to access the system. Source user password For storage systems that are the source in a replication session, the user password that is used to access the replication sessions with source role having data transfer due to RPO or manual sync on this remote system. NOTE: This attribute is used for - Dell Unity 300 | Unity™ Family Configuring Replication - Page 51
username that is used to access the system. -srcPassword For systems that are the source in a replication, type the user password that is used to access the system. -srcPasswordSecure Specify the password in secure mode. Once you run the command with this qualifier, you will be asked to type the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 52
Bandwidth schedules = MonTueWedThuFri7-18/2000,/8000 Current bandwidth = 8000 2: ID = RS_1 Name = FNM00151702100 Address = 10.244.205.127 Model = Unity 300 Serial number = FNM00151702100 Connection type = sync Source interfaces = 10.245.252.231, 10.245.252.232 Local interfaces - Dell Unity 300 | Unity™ Family Configuring Replication - Page 53
ensure that you have the appropriate interface types configured to support both asynchronous replication (eth2, eth3) and synchronous replication ( the user password that is used to access the remote system. Specify the password in secure mode. The user is prompted to specify the password. Specify - Dell Unity 300 | Unity™ Family Configuring Replication - Page 54
Qualifier Description ● both -bandwidthSchedules (async or both connection types only) Specify a schedule during which to cap bandwidth. Type the following to specify the schedule [{Sun|Mon|Tue|Wed|Thu|Fri|Sat}][HH-HH] [/], where: ● Sun|Mon|Tue|Wed|Thu|Fri|Sat - days of the week to run - Dell Unity 300 | Unity™ Family Configuring Replication - Page 55
level unplanned failover replication operation issued for a Unity system: uemcli /remote/sys -id RS_1 Unity system running an earlier version (for example, OE 4.0.x), you cannot have new OE version features enabled on the source. NOTE: At any given point in time, only one command is supported - Dell Unity 300 | Unity™ Family Configuring Replication - Page 56
and may negatively impact performance. The default RPO is one hour. RPO Resource while the session is in an Idle state. ○ manual-User initiated syncing. ○ auto syncing-System initiated syncing the source and check your network connections for any problems. Once the source is back online, you can - Dell Unity 300 | Unity™ Family Configuring Replication - Page 57
pausing, and then resuming the replication session. If the problem persists, delete and then create the replication session again Lost Communication (0xd) ● Failed Over with Sync (0x8400) ● Failed Over (0x8401) ● Manual Syncing (0x8402) ● Paused (0x8403) ● Idle (0x8404) ● Auto Sync Configured (0x8405 - Dell Unity 300 | Unity™ Family Configuring Replication - Page 58
Table 8. Replication session attributes (continued) Attribute Description ● Lost communication-Communication with the replication host has been lost. It is likely that the system is either powered down or there is a network connectivity issue between the systems. A change in the network - Dell Unity 300 | Unity™ Family Configuring Replication - Page 59
Table 8. Replication session attributes (continued) Attribute Description Sync status Percentage of the replication synchronization that has completed and the amount of time remaining. NOTE: For synchronous replication, the percentage is reported when the replication is in the Syncing state. - Dell Unity 300 | Unity™ Family Configuring Replication - Page 60
Table 8. Replication session attributes (continued) Attribute Description Daily snapshot allow auto-delete Whether or not the destination pool's auto-delete policy allows the replicated daily snapshots on the destination to be deleted. Output can be: ● Blank when scheduled snapshots are not - Dell Unity 300 | Unity™ Family Configuring Replication - Page 61
| remote -dstSys } -dstRes [-dstSPAInterface ] [-dstSPBInterface ] [-name ] [-elementPairs ] [-syncType {manual [-autoInitiate {yes | no}] | auto [-rpo ]}[replicateHourlySnaps {yes [{-keepSameAsSource | -keepFor | -allowAutoDelete}] | no - Dell Unity 300 | Unity™ Family Configuring Replication - Page 62
that point forward for newly created scheduled snapshots, old snapshots are left as is). No values are allowed. This option is enabled by default if -keepFor or -allowAutoDelete are not set. NOTE: This qualifier is used for asynchronous replications only. Specifies the retention time after which the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 63
snap signature check when using the user snapshot as the common base for Unity systems running OE version 5.1. This qualifier is valid only when specifying the source session. The valid values are as follows: ● yes ● no (default) Indicate whether to overwrite dirty data on the destination; it takes - Dell Unity 300 | Unity™ Family Configuring Replication - Page 64
Storage system port: 443 HTTPS connection 1: ID = 81604378625_FCNCH097274B3A_0000_81604378627_FCNCH097274B37_0000 Name = MyRep1 Session type = block Synchronization type = manual RPO = Sync State = idle Health state = OK (5) Operational status = Idle (0x8404) Time of last sync - Dell Unity 300 | Unity™ Family Configuring Replication - Page 65
system port: 443 HTTPS connection 1: ID = 42949672965_FCNCH0972DDD67_0000_42949672967_FCNCH0972DDD67_0000 Name = rep_sess_sv_1_sv_2_local Session type = lun Synchronization type = manual RPO = Resource type = LUN Sync State = idle Health state = OK (5) Health details = "This - Dell Unity 300 | Unity™ Family Configuring Replication - Page 66
the wanted Recovery Point Objective (RPO). ● manual-Data only is replicated when manually initiated. NOTE: This qualifier is used for asynchronous but also increases network traffic and may negatively impact performance. The default RPO is one hour. For automatic synchronization, type the time - Dell Unity 300 | Unity™ Family Configuring Replication - Page 67
session. This qualifier can only be modified when the session is active. Valid values are: ● yes ● no (default) Example The following command changes the source interface and destination interface for replication session 81604378625_FCNCH097274B3A_0000_81604378627_FCNCH097274B37_0000: uemcli /prot - Dell Unity 300 | Unity™ Family Configuring Replication - Page 68
Pause replication sessions Pause a replication session or sessions. To pause multiple replication sessions, you must include the name of each replication session that you want to pause. Format /prot/rep/session {-id | -name } pause [-async] Object qualifiers Qualifier -id -name - Dell Unity 300 | Unity™ Family Configuring Replication - Page 69
base snapshots, those snapshots trigger a full synchronization. Beginning with Unity 5.1.2, common base snapshots have signatures that allow delta synchronization to occur. NOTE: This qualifier does not support synchronous block replications. -forceFullCopy This qualifier specifies that a full - Dell Unity 300 | Unity™ Family Configuring Replication - Page 70
the session from the source system automatically removes the destination and source replication sessions. This ensures that you do not have to manually delete the associated storage resources or NAS servers from the destination system. NOTE: Once you delete a replication session, data from the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 71
Object qualifiers Qualifier -id -name Description Type the ID of the replication session to delete. Type the name of the replication session to delete. Action qualifiers Qualifier -async Description Run an action in asynchronous mode. Example The following command deletes replication session - Dell Unity 300 | Unity™ Family Configuring Replication - Page 72
where role=source. ● no-For an unplanned failover. Can only be issued from the destination system. Where -sync is not specified, this is the default value for a remote replication session or session where role=destination. NOTE: If the Network status=OK, the source system is probably OK. The command - Dell Unity 300 | Unity™ Family Configuring Replication - Page 73
base snapshots, those snapshots trigger a full synchronization. Beginning with Unity 5.1.2, common base snapshots have signatures that allow delta synchronizations to occur. NOTE: This qualifier does not support synchronous block replications. -forceFullCopy This qualifier specifies that a full - Dell Unity 300 | Unity™ Family Configuring Replication - Page 74
Operation completed successfully. Preserve asynchronous replication sessions Initiates a preserve asynchronous replication sessions operation on a NAS server synchronous replication session. After a NAS server synchronous replication session fails over or fails back with its file system synchronous - Dell Unity 300 | Unity™ Family Configuring Replication - Page 75
base snapshots can be snapshots that were created according to an established schedule and replicated to the destination. Common base snapshots can also be manually created on the source and replicated to the destination system. NOTE: The precheck can only be performed with the CLI. It cannot be - Dell Unity 300 | Unity™ Family Configuring Replication - Page 76
maintain the wanted Recovery Point Objective (RPO). ● manual-Data is replicated when manually initiated. NOTE: This qualifier is used for asynchronous but also increases network traffic and may negatively impact performance. The default RPO is one hour. Type the time interval for when the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 77
nonzero to zero. Designate the user snapshot as the common base for Unity systems running OE version 5.1. If this qualifier is absent, the system does to find the user snapshot was designated as the common base snapshot for Unity systems running OE version 5.1. If this qualifier is not included, the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 78
. Name-value pair format provides an example of the NVP format. ● table - The table format displays output as a table, with column headers and rows. By default, values that are too long to fit in a column are cut off. Add -wrap after the table qualifier, separated by a space, so that the values - Dell Unity 300 | Unity™ Family Configuring Replication - Page 79
which the port resides. Value is SPA or SPB. Protocols Types of protocols the port supports. Value is one of the following: ● mgmt - Management interface. ● file - unit (MTU) packet size (in bytes) that the port can transmit. Default is 1500 bytes per packet. Requested MTU size MTU size set by - Dell Unity 300 | Unity™ Family Configuring Replication - Page 80
identifier assigned to a network device for communications on a network segment. SFP supported speeds List of supported speed values of the inserted Small Form-factor Pluggable. SFP supported protocols List of supported protocols of the inserted Small Form-factor Pluggable. Valid values are - Dell Unity 300 | Unity™ Family Configuring Replication - Page 81
and 9000. Specific I/O modules may also restrict allowed range for MTU size value. The MTU size values of 1500 bytes (default) and 9000 bytes (jumbo frame) are supported by all interfaces and I/O modules. -speed Type the port speed. Available speed attribute contains the list of valid values. NOTE - Dell Unity 300 | Unity™ Family Configuring Replication - Page 82
type. Valid values are: ● unknown ● RJ45 ● LC ● MiniSAS_HD ● CopperPigtail ● NoSeparableConnector List of supported speed values of the inserted Small Form-factor Pluggable. SFP supported protocols List of supported protocols of the inserted Small Form-factor Pluggable. Valid values are: ● unknown - Dell Unity 300 | Unity™ Family Configuring Replication - Page 83
auto Health state = OK (5) Health details = "The port is operating normally." SFP supported speeds = 4 Gbps, 8 Gbps, 16 Gbps SFP supported protocols = FibreChannel Replication capability = Sync replication SFP supported mode = Multimode Change port settings Change the speed for an FC port - Dell Unity 300 | Unity™ Family Configuring Replication - Page 84
the SP on which the ports are linked. Valid values are: ● SPA ● SPB Maximum transmission unit (MTU) packet size (in bytes) for the linked ports. Default is 1500 bytes per packet. Linux network device name. ID of the FSN port to which the link aggregation belongs, if it is part of - Dell Unity 300 | Unity™ Family Configuring Replication - Page 85
Table 11. Link aggregation attributes (continued) Attribute Health details Description ● Degraded/Warning (10) - Working and performing all functions, but the performance may not be optimum. ● Minor failure (15) - Working and performing all functions, but overall performance is degraded. This - Dell Unity 300 | Unity™ Family Configuring Replication - Page 86
a custom value between 1280 and 9216. Specific I/O modules may restrict allowed range for MTU size value. The MTU size values of 1500 bytes (default) and 9000 bytes (jumbo frame) are supported by all interfaces and I/O modules. Example The following command links port 0 and port 1 on SPA with the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 87
1280 and 9216. Specific I/O modules may restrict allowed range for MTU size value. The MTU size values of 1500 bytes (default) and 9000 bytes (jumbo frame) are supported by all interfaces and I/O modules. Example The following command changes the MTU size for link aggregation la0_SPA to 9000 bytes - Dell Unity 300 | Unity™ Family Configuring Replication - Page 88
A Use case for CLI Topics: • Replication configuration use case Replication configuration use case This section describes the use cases for configuring replication for block or file storage resources. Before you begin Before you proceed with configuring replication, ensure that you complete the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 89
choose to remove the associated replication sessions manually. 4. Create a remote replication session For more information, see the Unisphere CLI User Guide. 2. Zone the Synchronous Replication FC ports between you want: ● For synchronous replication support (Synchronous connection mode), use the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 90
SPB on the target Unity system. Once the mobility interface is configured, you can create the import connection between the Unity system and the VNX the VLAN ID only when you have configured the network switch port to support VLAN tagging of multiple VLAN IDs. About this task Ensure that you create - Dell Unity 300 | Unity™ Family Configuring Replication - Page 91
: ● For remote replication, the IP address and associated user authentication credentials to connect to the remote system. ● For local replication, the password associated with your user account. ● The connection mode you want to use for the replication: Asynchronous, Synchronous, or Both. NOTE: If - Dell Unity 300 | Unity™ Family Configuring Replication - Page 92
= RS_1 Name = MyTargetSystem Address = 10.1.1.1 Model = Unity 300 Serial number = FCNCH01234567A90 Connection type = async Source can specify asynchronous (async), synchronous (sync), or manual synchronization (manual). ● For asynchronous replication, determine the Recovery Point - Dell Unity 300 | Unity™ Family Configuring Replication - Page 93
Create an asynchronous replication session for file storage Prerequisites Complete the following: ● For remote replication: ○ Identify the remote system that will act as the replication destination. ○ Create relevant replication interfaces, replication connection, and a storage resource on the - Dell Unity 300 | Unity™ Family Configuring Replication - Page 94
Steps 1. Run the following command to create a synchronous replication session between the NAS servers: uemcli -d 10.0.0.1 -u Local/joe -p MyPassword456! /prot/rep/session create -name MyNSRep1 -srcRes nas_1 -dstType remote -dstSys RS_1 -dstRes nas_1 Storage system address: 10.0.0.1 Storage system
Dell Unity™ Family Configuring Replication
Version 5.2
Part Number: H14974
April 2022
Rev. 09