Disk-to-Disk Backup and Restore Solution

Disk-to-Disk Backup and Restore Solution

Introduction . . . .1

The Solution: The Adaptec FS4500 Fibre Channel-Serial ATA Storage Array . . . .1

Test Configuration . . . .2

Configuration Details . . . .3

1. Host System Information . . . .3

2. FC Switch information . . . .3

3. External FC Disk Array Information . . . 3

4. Backup Software Product Information . . . 3

Part 1: Configuring Adaptec FS4500 Logical Drives . . . .3

Part 2: Configuring ARCserve Backup to run GFS backups . .7 Part 3: Restore procedures . . . .10

Using Computer Associates ARCserve 11 and Adaptec FS4500

Fibre-to-SATA RAID

Contents

Introduction: The Data Protection

Challenge

As companies become increasingly reliant on their information resources, IT managers face a daunting challenge in protecting business-critical data. They must be able to:

• Provide rapid near-term recovery of data and applications to assure business continuity. • Back up a growing volume of data, without

inter-rupting normal business activities.

• Meet expanding data protection needs within existing budget constraints.

Increasingly, IT managers are finding traditional tape media backup systems inadequate to meet their near-term backup/restore requirements. This is due to some inherent disadvantages of tape libraries:

• Long Backup Windows, requiring hours per ter-abyte, preventing access to applications and data. • Slow Restore Times, particularly when data is

stored on multiple tapes that must be loaded and unloaded.

• Lack of Scalability, requiring purchase of addition-al, costly tape libraries to accommodate growth.

• Cost and Complexity, including high initial cost and expensive, time-consuming maintenance and management.

While the longevity and low cost of tape media make it attractive for long-term data archiving, enterprises need a better solution for their short-term

backup/restore requirements. This need is especially apparent when one considers that 90% of the data required for recovery has been backed up within the previous 7 days. Keeping these files on disk, ready for rapid recovery, is critical to business continuity.

The Solution: Adaptec FS4500 Fibre

Channel-to-Serial ATA Storage Array

The Adaptec FS4500 is a high-performance, high-den-sity, disk-to-disk Fibre Channel storage solution that delivers the performance, price and availability to meet today’s real-world enterprise requirements. Based on Serial ATA disk technology, RAID disk array technolo-gy, and Fibre Channel interface technolotechnolo-gy, the Adaptec FS4500 Storage Array offers exceptional price/performance and flexibility.

bene-fits of an advanced, disk-to-disk solution:

• Faster Restore Times, performing data recovery up to 15 times faster than tape systems. Accelerate restore times by 80%.

• Shorter Backup Windows, dramatically reducing the time that data and applications are unavailable. Slash backup times by 33%.

• Scalability, permitting rapid, cost-effective scaling of both capacity and performance.

• Decreased Downtime, ensuring data availability with RAID storage arrays and highly reliable Serial ATA disks.

• Reduced Management Cost and Complexity with simple, centralized management of all storage resources.

The configuration described and tested in this Solu-tion Report combines the Adaptec FS4500 Fibre-SATA storage array with Computer Associates’ BrightStor ARCserve 11 for Windows to provide a disk-to-disk backup/restore solution in a Fibre Channel SAN envi-ronment. FC SWITCH Brocade Silkworm 3800 FS4500 SERVER S1 QLA2300 FC HBA SERVER S2 LP9802 FC HBA SERVER S3 QLA2340 FC HBA SERVER S4 QLA2340 FC HBA FC JBOD

S1 Storage S2 StorageFC JBOD _{Zones 1 and 2}Channel 0 in _{Zones 3 and 4}Channel 1 in DURASTOR 7220SS3 Storage S4 StorageFC JBOD

ZONE 2 ZONE 3 ZONE 4

ZONE 1

Test Configuration

Topology information

Configuration details

1. Host system information Server S1 Information

Model: Supermicro X5DPR-iG2+ Processor: Pentium Xeon 1.6 GHz Memory: 1 GB

OS, Version and SP: Windows 2003 Number of FC HBAs: 1

Vendor and Model: Qlogic QLA 2300 Firmware Version: N/A

Driver Name and Version: ql2300.sys; 5.2.3790.0 Server S2 Information

Model: Supermicro X5DPR-iG2+ Processor: Pentium Xeon 1.6 GHz Memory: 1 GB

OS, Version and SP: Windows 2003 Number of FC HBAs: 1

Vendor and Model: Emulex Light Pulse LP9802 Firmware Version: 1.81A1

Driver Name and Version: elxsli2.sys; 5.2.22.8 Server S3 Information

Model: Supermicro X5DPR-iG2+ Processor: Pentium Xeon 1.6 GHz Memory: 1 GB

OS, Version and SP: Windows 2003 Number of FC HBAs:

Vendor and Model: Qlogic QLA 2340 Firmware Version: 3.02.14

Driver Name and Version: ql2300.sys; 8.2.3.11 Server S4 Information

Model: Supermicro X5DPR-iG2+ Processor: Pentium Xeon 1.6 GHz Memory: 1 GB

OS, Version and SP: Windows 2003 Number of iSCSI HBAs: 2

Vendor and Model: Qlogic QLA 2340 Firmware Version: 3.02.14

Driver Name and Version: ql2300.sys; 8.2.3.11 2. FC 2Gb Switch information

Brand and Model: Brocade Silkworm 3800 Fabric OS version:v3.0 RC1

3. External FC Disk Array information

Brand and Model: Adaptec FS4500 with single controller Disk Array Firmware Level: 3.31N

RAID Controller Board Revision: 1.31K

RAID Controller BIOS: N/A

Disk Drive Vendor and Model: Seagate ST380013AS Disk Drive Capacity: 76058 MB

Disk Drive Firmware Level: 3.05 Number of Disk Drives: 12

Number of FC ports: 2 (Channel 0 and Channel 1) Management Ethernet port information:

DHCP: NO

IP Address: xxx.xxx.xxx.xxx Subnet Mask: 255.255.255.0 Router: None

Management Software: Spheras RAID Watch v.1.53 RAID 5 volumes

All 12 drives in the FS4500 were used to configure 4 RAID 5 logical drives.

Each RAID 5 pool consisted of 3 physical disks. Configured Logical Drives:

LD0 – 148GB of RAID 5; mapped to Channel 0, LUN0; used by Server S1

LD1 – 148GB of RAID 5; mapped to Channel 0, LUN1; used by Server S2

LD2 – 148GB of RAID 5; mapped to Channel 1, LUN0; used by Server S3

LD3 – 148GB of RAID 5; mapped to Channel 1, LUN1; used by Server S4

4. Backup Software information Mfg: Computer Associates

Product: BrightStor ARCserve 11 Version and Build: v11.0, build 2670

Part 1: D2D Backup setup

Spheras RAID Watch 1.53 was used to manage the FS4500 and create RAID 5 logical drives to be used by each of the servers as backup drives in our configura-tion. Two RAID logical drives were created and assigned to the primary channel (Channel 0) of the FS4500, and another two RAID 5 logical drives were created and assigned to the secondary channel (Chan-nel 1).

Configuring the FS4500 logical drives 1. Launch Spheras RAID Watch and log into your

the default settings. Additionally, you can specify which controller you want the Logical Disk assigned to using the “LD Assignment” field. For our test configuration, we only had one (Primary) controller.

2. After logical disks are created, they must be mapped to a LUN. From the main “RAID View” window, click the “Physical View” icon and select the channel and controller to which you wish to map your configured Logical Drives. In the example below, we’ve selected “Channel 0” on the “Primary Controller.” Next, click on the “LUN Mapping” tab and expand the “All LDs” icon to view all configured Logical Drives and partitions. Select the par-tition you want to map, select the appropriate LUN number desired and click OK to commit changes.

In our test configuration, we assigned LD0 and LD1 to Channel 0 on the Primary controller mapped as LUN0 and LUN1, respectively.

3. To ensure each server in the configuration will detect and access only one configured RAID 5 volume from the FS4500, it is recommended that you disable the detected RAID 5 volume that will not be used. This ensures that only the desired server will have access to the desired device. To achieve this, open the “Device Manager,” expand the “Disk drives” icon, select an “Adaptec FS4500 SCSI Disk Device” icon, right-click and select “Proper-ties.”

5. Return to the “Device Manager” window, select the appropriate “Adaptec FS4500 SCSI Disk Device” icon, right-click and select “Disable.” In our test configuration, we disabled the “Adaptec FS4500 SCSI Disk Device” with LUN 1 on our S1 server. On our S2 server, we disabled the “Adaptec FS4500 SCSI Disk Device” with LUN 0

Part 2: Configuring ARCserve to run GFS backups

Perform the following configuration steps for each server:

1. Install Computer Associates’ ARCserve 11 for Windows backup software.

2. Begin by determining the backup schedule and the duration to keep your data on the disk-to-disk backup device before moving it to tapes to archive it. This info is needed to create appropriate disk-to-disk backup devices. In the following example, we will use a backup schedule <5-day weekly incremental backup, full backup on Fri-day> with GFS enabled, which is one of the default options in ARCserve. We want to keep 1 week of backup data on the disk-to-disk backup device for fast data recovery.

Based on this requirement, we need to define 6 File System Devices (FSD) in a group to hold one week’s data before it is moved to a secondary medium (e.g., tape medium). (The 6 FSDs are used to hold backup from Mon, Tue, Wed, Thu, Fri and a second Fri; this will ensure a Fri full backup be available in the case of a failure occurring during the latest Fri full backup.)

3. Run Disk Administrator to configure a volume with its corresponding FS4500 logical drive. Assign a drive letter for the FS4500 logical drive. (We used “i:” for the FS4500 volume on server S1; “j:” for server S2; “k:” for server S3 and “l:” for server S4). Open “Device Configuration” to create the File System Devices with the FS4500 vol-ume for backup.

Tip: With the <auto naming> for media name, the start day will use the FSD named “1”; the second day will use the FSD named “2.” If the start day is Monday, then the first full backup on Friday will use the FSD “5.”

Tip: The file system named “6” will be used for the second Friday full backup. The Mon – Thu FSDs will be reused for the incremental backups.

5. Start the tape engine again and create an “FSDevice” (for File System Device) group and move all the “1,” “2,”… “6” FSDs into this group.

6. Click the “Backup” icon to define the <5-day weekly incremental backup, full backup on Friday> with GFS enabled with the following steps:

– Make sure all the FSDs are in a group named “FSDevice” and this group is used as backup destination.

– Enter a different name in the “Media Pool Name Prefix” for each application server. Set the media preservation as shown:

Tip: For daily set, Mon, Tue, Wed, and Thu will be preserved for 6 days. Both Friday sets will be preserved for 13 days. (We Need 2 Fri sets in case the latest Fri full backup fails; we still have the one-week old full backup and the incremental daily backups.)

Repeat the above steps for the other servers to complete the D2D backup setup.

Now the four application servers will run the scheduled jobs to perform D2D backups. The FS4500 will hold up to two weeks of data before being re-used to backup newer data. If data must be archived, backups must be moved to secondary medium weekly, before the older backups are overwritten.

Part 3: Restore procedures

2. From the “Restore” configuration screen, click “Source” to view the backup jobs available for restore. You can customize the view by changing the “Restore by” type selections.

4. Click the “Destination” tab to configure destination parameters. By default, the “Restore files to their original location(s)” box is checked. If you want the files restored to a different location, uncheck the box and select desired destination.

6. …and configure the “Job Execution Time”. Click “OK” to commit changes and execute the restore job.

Summary

The combination of the Adaptec FS4500 Fibre-to-SATA Storage Array and Computer Associates’ ARCserve 11 soft-ware provide a practical, cost-effective and easily deployed solution for handling day-to-day backup/restore opera-tions in a FC SAN environment. In our tests, the Adaptec FS4500 and ARCserve 11 configuration proved an effec-tive way for companies to satisfy their data protection strategies of today…and those of tomorrow.

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