You can't convert your 1TB non-RAID disk to a RAID 1 disk and retain the data on it. There may be controllers that can do it but none of our PERCs can. You will need to create the RAID 1 and then copy the data to the new RAID array.

Overview of Solaris I/O Multipathing

The Solaris I/O multipathing features enable multiple access paths for systems that arerunning the Oracle Solaris OS. Multipathing provides higher availability for storage devices throughthe use of multipathed connections.

The Solaris I/O multipathing features identify the storage devices on your SAN orSAS Domain. The software enables you to attach Fibre Channel storage devices ineither loop, fabric, or point-to-point mode. The software provides a common interface formanaging both Fibre Channel and SAS storage.

For information on how to configure targets and initiators in preparation for multipathing,see Chapter 14, Configuring Storage Devices With COMSTAR, in Oracle Solaris Administration: Devices and File Systems.

Fibre Channel Software Features

Solaris I/O multipathing provides the following key features:

• Dynamic storage discovery – The software automatically recognizes devices and any modifications made to device configurations. This feature makes devices available to the system without requiring you to reboot or manually change information in configuration files.

• Persistent device naming – Devices that are configured within the software maintain their device naming through reboots or reconfiguration. The only exception to this policy are tape devices found in /dev/rmt that will not change unless they are removed, and then regenerated at a later date.

• Fibre Channel Arbitrated Loop (FCAL) support – OpenBoot PROM (OBP) commands that are used on servers can access FCAL attached storage for scanning the FC loop.

• Fabric booting – The Solaris OS supports booting from fabric devices as well as non-fabric Fibre Channel devices. Fabric topologies with Fibre Channel switches provide higher speed, more connections, and port isolation.

• FC-HBA library – What was previously known as the Storage Networking Industry Association Fibre Channel host bus adapter (SNIA FC-HBA) library is now known as the FC-HBA library. The FC-HBA library application programming interface (API) enables management of FC HBAs and provides a standards-based interface for other applications (such as Oracle's StorEdge Enterprise Storage Manager) that can be used to gather information about FC HBAs.

  Man pages for common FC-HBA APIs are included in the libhbaapi(3LIB) man page section. For additional information about FC specifications, refer to http://www.t11.org.

• Fibre Channel virtualization – N Port ID Virtualization (NPIV) is an extension to the Fibre Channel standard, which enables one Fibre Channel port to simulate many ports on the SAN. This is useful for virtualization environments such as Oracle VM Server for SPARC or Oracle VM Server 3.0 for x86.

• Fibre Channel over Ethernet (FCoE) – A new T11 standard to transport encapsulated Fibre Channel frames over Enhanced Ethernet is now available. Solaris FCoE is a software implementation that is designed to work with normal Ethernet controllers.

SAS Software Features

• Dynamic storage discovery – The Oracle Solaris OS multipathing software automatically recognizes devices and any modifications made to device configurations. This makes devices available to the system without requiring you to reboot or manually change information in configuration files.

• Persistent device naming – Dynamic Storage Discovery Devices that are configured within the Solaris OS multipathing software maintain their device naming through reboots or reconfiguration.

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Solaris I/O Multipathing Features

Solaris I/O multipathing is enabled by default for x86-based platforms and optional forSPARC-based systems that run the Oracle Solaris OS. The software contains the followingfeatures:

• Path management – Solaris I/O multipathing features dynamically manage the paths to any storage devices it supports. The addition or removal of paths to a device is done automatically when a path is brought online or removed from a service. Even with multipathing enabled, you can add more controllers to increase bandwidth and RAS, without changing device names or modifying applications. Oracle storage products do not require configuration files to manage or databases to keep current. For storage other than Oracle's, contact your storage vendor for methods to enable support and to ensure it is qualified with Solaris I/O multipathing features.

• Single device instances – Solaris I/O multipathing features are fully integrated with the Oracle Solaris OS. Multipathed devices are displayed as single device instances instead of as one device or device link per path. This feature reduces the cost of managing complex storage architectures with utilities such as the formatcommand or a volume management product to see one representation of a storage device instead of a separate device for each path.

• Failover support – Implementing higher levels of RAS requires redundant host connectivity to storage devices. Solaris I/O multipathing features manage the failure of storage paths while maintaining host I/O connectivity through available secondary paths.

  You can determine the failover support for your devices by using the following command:

• Symmetrical/Asymmetrical device support – The following disk storage devices are supported:

  • All Oracle disk storage products, both symmetric and asymmetric

  • All T10/T11 standards-compliant third-party symmetrical disk devices

  • Many third-party asymmetrical disk arrays

  • T10 Asymmetric Logical Unit Access (ALUA) support has been added for asymmetrical devices that support this T10 standard. Contact your storage vendor to see whether your device is supported.

    If your disk storage array uses the f_asym_lsi failover module, you will need to manually change the sequence of ddi-forceload section by moving the f_asym_lsi to end of the scsi_vhci.conf file, similar to the following:

• I/O load balancing – In addition to providing simple failover support, Solaris multipathing features can use any active paths to a storage device to send and receive I/O. With I/O routed through multiple host connections, bandwidth can be increased by the addition of host controllers. The software uses a round-robin load-balancing algorithm by which individual I/O requests are routed to active host controllers in a series one after the other.

• Queue depth – SCSI storage arrays present storage to a system in the form of a logical unit number (LUN). LUNs have a finite set of resources available, such as the amount of data that can be stored, as well as the number of active commands that a device or LUN can process at one time. The number of active commands that can be issued before a device blocks further I/O is known as queue depth. When Solaris I/O multipathing is enabled, a single queue is created for each LUN regardless of the number of distinct or separate paths it may have to the host. This feature enables the disk driver to maintain and balance one queue to the LUN, effectively managing queue depth. No other multipathing software available for the Oracle Solaris OS has this ability.

• stmsboot command – The Oracle Solaris OS includes the stmsboot command, which allows you to enable or disable the Solaris multipathing features on your boot device after the OS installation has been completed. This command is available for both SPARC and x86 systems, and provides support for SAS multipathing.

  SAS multipathing is not enabled by default in the Oracle Solaris OS for either SPARC or x86 systems, so use of the stmsboot command is required as a post-installation step if you wish to enable multipathing.

  SPARC systems do not enable multipathing for FC devices by default, so use of the stmsboot command is required as a post-installation step.

  X86 systems do enable multipathing of FC devices by default, so the use of the stmsboot command is not mandatory as a post-installation step.

• Dynamic reconfiguration – Solaris I/O multipathing features support dynamic reconfiguration (DR) operations.

Heterogeneous management tool for storage area networks

ManageEngine^® OpManager's advanced storage monitoring solution uses SNMP / CLI / SMI-S/ vendor-specific APIs to discover the RAIDs in your network. Complete set of asset, capacity, performance, and configuration information of the RAID and its components are discovered and represented in the OpManager client.

RAIDs Supported

• Dell EqualLogic PS 5000 Series, 6000 Series
• EMC Clariion CX 200, CX 300, CX 400, CX 500, CX 600, CX 700, FC 4700
• EMC Celerra NX4, NS120
• EMC Isilon
• EMC VNX File
• EMC Unity
• EMC VNX Block 5100, 5300, 5500, 5700, 7500
• EMC VNXe3150, VNXe3200, VNXe3300
• EMC Symmetrix VMAX
• Dell Compellent SC4020, SC5020, SC7020, SC8000, SC9000, SCv3000, SCv3020
• HP MSA Series
• HP EVA
• HP 3PAR
• HPE Nimble
• IBM DS4000, DS5000, DS6000, DS8000
• IBM XIV
• IBM V7000, V5000, V3500, V3700
• Infinibox
• HDS Thunder 9500V, Thunder 9570V, Thunder 9585V
• Hitachi Lightning 9980V, Lightning 9970V, Lightning 9900V
• Hitachi VSP
• Hitachi AMS
• Huawei OceanStor, 18xxx series, Fusion storage, Huawei 9000 series
• All v3/v5/v6 devices that support Huawei API (StorageAPI)
• Infortrend
• NetApp E/EF Series
• NetApp FAS
• NetApp AFF
• Promise VTrak
• StorageTek/LSI Logic
• Pure Storage
• Synology DSM (SNMP)
• Lenovo v3700/v7000 (CLI)
• Fibrenetix
• Fujitsu Eternus 8000, Eternus 4000, DX series
• BOSCH
• Areca
• Accordance

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Features supported

Asset Management

• Up-to-date device summary
• Administrators can key in details such as device location, vendor details, and technical support info.
• Comprehensive physical and logical asset details in RAIDs
• Device level problem report filing and maintenance

Fault Management

OpManager periodically polls the devices to check the health, availabiity, and utilization of storage RAIDs. Early indications are provided on hardware/software problems and alarms are generated on drive failures, sensor faults such as Fan Failure, Battery Failure, Power supply failure. SNMP traps from the arrays are also captured and appropriate alarm is generated.

• Captures Storage Array & Component Status Change Notifications
• Management functions such as assign owner, annotate, clear, and delete
• Reports alarms to administrators through email or SMS messages based on customizable rules
• Escalates unattended alarms to higher ups based on pre-defined rules

Availability Trends

Availability reports on RAID controllers and its ports show the availability trends, downtime history, MTTR, MTBF, etc

You can generate the reports for various time periods such as today, yesterday, last N days, last week, this month, last month, and between two selected days

Performance Reports

Performance statistics are computed at periodic intervals and reports generated to provide trend analysis for the storage array components like

• Storage Array Capacity
• Storage Array
• Controller / Storage Processor
• Virtual Disks
• Raid Groups
• Disk Groups
• Disk Drives
• Controller Port Statistics

The parameters collected include the following ,

• Traffic - Read / Write / Total
• Utilization - Read / Write / Total
• Bandwidth - Read / Write / Total
• Throughput - Read / Write / Total
• Latency - Read / Write
• Queue Depth
• Storage array capacity - Total / Configured / Used / Free

You can visually see the utilization of components like LUN volumes and take preventive measures as they reach their peak capacities

Visualization

• Topological map shows arrays and their connections to switches and host servers.
• Link details table shows link name, source, and destination.
• Color-coded icons depict switch and interconnection status.
• Drill-down views - Array Sub-map views

For in-depth storage monitoring, download OpManager - the comprehensive storage monitoring tool.