Iomega STORCENTER px12-350r White Paper
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Iomega STORCENTER px12-350r White Paper

Network storage array
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WHITE PAPER
IOMEGA
®
STORCENTER
STORAGE PROVISIONING AND RAID MIGRATION
CONFIGURATION GUIDE
This white paper describes the flexible and advanced
storage provisioning capabilities available on an
Iomega
®
StorCenter
™
px12-350r network storage array.
The paper includes detailed instructions to help users
provision storage and plan for RAID migration.
JUNE 2010
™
px12-350r
1
1
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  • Page 1: Table Of Contents

    WHITE PAPER IOMEGA ® STORCENTER ™ px12-350r STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE INTRODUCTION This white paper describes the flexible and advanced storage provisioning capabilities available on an AUDIENCE Iomega ® StorCenter ™ px12-350r network storage array. The paper includes detailed instructions to help users TERMINOLOGY provision storage and plan for RAID migration.

  • Page 2: Introduction

    NFS and iSCSI and Microsoft Windows Server 2008 R2 (Hyper-V) certified for iSCSI. The Iomega px12-350r allows flexible storage provisioning to offer users configuration options based on data protection, storage utilization, and performance considerations, as well as application requirements. Disks can be grouped into Storage Pools with or without a RAID protection level.
  • Page 3 IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE RAID 0: this RAID level distributes data across multiple disks in a way that gives improved speed at any given instance. If one disk fails, however, all the data on the array will be lost, as there is neither parity nor mirroring.

  • Page 4: Storage Provisioning

    Storage Pool: a unit of provisioning. A Storage Pool contains a set of disk drives using a common data protection type. Folder: on an Iomega px12-350r, a folder is a file system directory that can be accessed by hosts using file sharing protocols, including NFS and CIFS.

  • Page 5: Listing Storage Pools

    1. To view Storage Pools, go to Settings > Storage Pools. 2. The Iomega px12-350r supports up to 12 SATA disks. The drives and their layout inside the device enclosure are shown in a graphical representation. Each drive is numbered.

  • Page 6: Raid 1 Migration To Raid

    I/O, yet cached data has not been committed to the drive. Therefore, the best practice is to enable write caching only when the Iomega device is protected by UPS. This is a global setting that applies to all drives.

  • Page 7: Managing Storage Pools

    Managing Storage Pools The StorCenter px12-350r is ordered and shipped with four drives. By default, one Storage Pool is created using all four drives in the RAID 5 protection mode as shown below. Additional drives can be ordered in expansion packs but will not be constructed in any Storage Pool.

  • Page 8: Adding Storage Pools

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE Adding Storage Pools For illustration purpose, the default initial Storage Pool is removed so that all twelve drives are available for Storage Pool creation to demonstrate the flexible provisioning options. 1. Go to Settings > Storage Pools and click the icon to create a new Storage Pool.
  • Page 9 IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 3. Choose a RAID level for the Protection type. On the Iomega px12-350r, the following data protection types are available in the Protection selection box. Figure 8 Choose data protection type Double Parity (RAID 6) – the pool must contain at least 4 drives.
  • Page 10 IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE The following table compares the different RAID levels. For more details, refer to http://en.wikipedia.org/wiki/RAID. Level Description Min. # Space Fault of Disks Efficiency Tolerance RAID 0 Striped set without parity or Striping. Provides improved...
  • Page 11 RAID 5 using at least 4 drives and RAID 6 using at least 6 drives. Note: Typically a RAID 10 group consists of an even number of drives. On an Iomega px12-350r, RAID 10 can be created using an odd number of drives. Each data block is repeated n times in a k-way stripe. The layout is equivalent to the standard RAID 10 layout, but it does not require that n divides k.
  • Page 12 IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 4. There could be three checkboxes associated with Storage Pool creation. By default, Create commonly used folders is checked to automatically create the Backups folder, Pictures folder, and Documents folder in the Storage Pool. If the checkbox is unchecked, no folder will be created. However, this checkbox is not presented if the folders had already been created in another Storage Pool.

  • Page 13: Adding Folders

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 6. Repeat the steps to create more Storage Pools. Figure 10 Create more Storage Pools Adding folders After the Storage Pools finish RAID construction, you can add folders as shared storage for multiprotocol access.
  • Page 14 4. If the Media Server is enabled on the Iomega px12-350r, by default the Enable media sharing box is checked to allow the media server on the Iomega px12-350r device to scan the folder for media files.

  • Page 15: Adding Iscsi Drives

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE Adding iSCSI drives The iSCSI service must be enabled before iSCSI drives can be created. Refer to the Configuring iSCSI on the Iomega StorCenter Pro ix4-200r NAS Server (http://download.iomega.com/com/nas/pdfs/iscsi_200r_wp_0909.pdf ) white paper about how to configure iSCSI.

  • Page 16: Raid Migration

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 5. After the drive is created, it is listed in the Shared Storage table without information about Used/Available. Figure 15 List iSCSI drives RAID MIGRATION Storage pools with certain RAID types can be migrated by adding additional drives while data is online. After new drives are added, the Storage Pool will perform RAID reconstruction to include the new drives in the RAID protection mechanism.

  • Page 17: Raid Migration By Adding More Drives

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE RAID migration by adding more drives The procedures for migrating RAID 5 and RAID 6 Storage Pools by adding new drives are the same. In this paper, RAID 5 migration procedure is described.

  • Page 18: Raid 1 Migration To Raid 5

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 3. Leave the protection type as Parity (RAID 5) and click Apply. The Storage Pool is shown as being reconstructed. Figure 18 Storage pool reconstruction Storage pools with certain RAID types can also be migrated to certain other RAID types by adding additional drives while data is online.

  • Page 19: Raid 5 Migration To Raid 6

    IOMEGA STORAGE PROVISIONING AND RAID MIGRATION CONFIGURATION GUIDE 3. Change the data protection type from Mirror (RAID 10) to Parity (RAID 5) and click Apply. The Storage Pool will be reconstructed into the new RAID type. Figure 19 RAID 1 migration to RAID 5 RAID 5 migration to RAID 6 1.

  • Page 20: Conclusion

    The Iomega px12-350r allows flexible storage provisioning by creating multiple Storage Pools that can be protected in a RAID. The supported RAID types include RAID 0, RAID 1, RAID 10, RAID 5, and RAID 6. Disks in a Storage Pool can also be used as JBOD without data protection.

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