SAN Boot Implementation and Best Practices Guide ... - IBM Redbooks

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SAN Volume Controller offers these benefits: ► Overall, SAN Volume Controller helps reduce the cost of managing SAN by enabling tiers of storage, which allows clients to purchase cheaper disks for their data that does not need the high performance disks. ► Helps improve storage utilization by making better use of existing storage and control growth. By combining the capacity of multiple disk arrays into a single pool of storage, SAN Volume Controller enables clients to manage storage as a business resource available for deployment as required, and not as set of boxes. ► Enables clients to implement multi-vendor strategies because it can manage so many different disk arrays. ► Designed to improve application availability by allowing changes to storage and move data without without disrupting your applications. ► Offers greater efficiency and productivity for storage management staff. Storage administrators can manage their single pool of storage from a central point and they only need to learn a single interface. ► Offers network-based replication, which enables greater choice when buying storage ► Helps improve Business Continuity by supporting continuous operations and enabling copy services to be applied across all the managed storage. In combination with IBM TotalStorage Productivity Center, SAN Volume Controller also supports dynamically adding storage to applications automatically and on demand. Figure 5-2 shows an overview of SAN Volume Controller, virtualizing source storage from various vendors. Figure 5-2 SAN Volume Controller overview The SAN Volume Controller is highly scalable, providing an easy growth path to two-n nodes (grow in a pair of nodes). Presently, SAN Volume Controller supports FC and iSCSI SAN interfaces. It is external storage RAID controller-independent, providing a continual and ongoing process to qualify additional types of controllers. SAN Volume Controller is able to utilize disks internally located within the nodes (solid state disks) as well as the disks locally attached to the nodes (SAS drives). 274 SAN Boot Implementation and Best Practices Guide for IBM System Storage
On the SAN storage that is provided by the disk subsystems, the SAN Volume Controller manages multiple tiers of storage, provides block-level virtualization (logical unit virtualization), and provides advanced functions to the entire SAN, as follows: ► Large scalable cache ► Advanced Copy Services ► FlashCopy (point-in-time copy) ► Metro Mirror and Global Mirror (remote copy, synchronous/asynchronous) ► Non-disruptive and current data migration between storage tiers. All communication between SAN Volume Controller nodes is performed through the SAN. All SAN Volume Controller configuration and service commands are sent to the system through an Ethernet network. For detailed information on SAN Volume Controller components, see Implementing the IBM System Storage SAN Volume Controller V6.1, SG24-7933. The latest details regarding SAN Volume Controller supported hardware list, device driver, firmware and recommended software levels are available at this website: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1003697 IBM SAN Volume Controller models The IBM System Storage SAN Volume Controller hardware configuration consists of a cluster of IBM 2145 servers, called SAN Volume Controller Storage Engines. Each SAN Volume Controller Storage Engine is a node; two nodes make up a node pair (I/O group); up to four I/O groups constitute a SAN Volume Controller cluster. The cluster is scalable from one to four node pairs (I/O groups), and is supported by dual read/write cache. This design is intended to avoid single points of failure and support concurrent maintenance. SAN Volume Controller 2145-CF8 Storage Engine This component is the latest SAN Volume Controller model, based on the IBM System x3550M2 server running an Intel Xeon 5500 2.4-GHz quad-core processor. It has four 8-Gbps FC ports and up to 24 GB of cache per engine. It also provides scale-out high performance solid-state device support, with the ability to have up to four solid-state devices installed directly into each SAN Volume Controller hardware engine. Figure 5-3 shows the front view of the SAN Volume Controller 2145-CF8. Figure 5-3 2145-CF8 Tip: New engines can be intermixed in pairs with other engines in SAN Volume Controller clusters. Mixing engine types in a cluster results in VDisk throughput characteristics of the engine type in that I/O group. Chapter 5. SAN Boot implementation with IBM SAN Volume Controller and IBM Storwize v7000 275
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ibm.com/redbooks Front cover SAN Bo
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Note: Before using this information
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2.8.4 Creating a host on DS5000 ser
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4.9.2 Activating and installing the
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viii SAN Boot Implementation and Be
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Trademarks IBM, the IBM logo, and i
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Scott Dybas is a Senior Software En
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xiv SAN Boot Implementation and Bes
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1.1 What SAN Boot is SAN Boot is a
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IBM System Storage devices use pers
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1.5 What switch zoning is Zoning is
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1.6.3 iSCSI HBA A storage unit is a
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Using software initiators offers th
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1.7.1 Basic concepts Multiple LUNs
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5. Boot into the host server system
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Concepts Thin provisioning provides
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1.8.2 Data protection and retention
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20 SAN Boot Implementation and Best
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2.1 DS5000 overview The DS5000 seri
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► Controller-based software: - St
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4. Select Do not Automatically Star
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8. As shown in Figure 2-7, enter th
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3. Select Planar SAS from the next
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2. Select System Settings from the
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3. Select Configuration Settings as
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Figure 2-20 Scan for Fibre Devices
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3. Select Selectable Boot Settings
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7. Verify that all the information
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2. We need to add the second storag
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4. Now enter 1 and press Enter as s
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8. Next we see the storage subsyste
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3. On the next panel, enter 01 and
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2.7.2 Adding a second path to the E
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2. When you click your storage subs
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4. Next we select the RAID level, p
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Figure 2-54 Creating the logical dr
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6. After the logical drive is creat
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4. We must now define the host port
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7. You are asked if this host will
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Figure 2-69 Assigning the LUN to th
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2. You can see a window, Manage Hos
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5. Now that you have the second pat
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2. To execute a script on the stora
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5. When the script completes, the r
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2. If the driver is found, it will
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Tip: The rest of the installation p
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2.9.4 Windows 2008 R2 SP1 Multipath
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5. We can also check the volume inf
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2.10.1 Installation steps We are go
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4. After clicking Hard Disks, we cl
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10.We now need to update the SUSE L
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13.When we are in the Boot Loader D
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We are going to install RHEL 5.5 se
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Figure 2-112 Customizing the Softwa
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Tip: Note the name of the new mpp i
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Tip: Make sure that you reboot the
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2.12 FC SAN Boot implementation for
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5. Confirm the ESXi installation by
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3. Verify drive size and click the
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You can find more information about
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5. Clean up the alternate disk volu
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d. Select Activate. The Activate Pa
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Example 2-13 Checking Storage WWPN
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NIM preparations We assume that the
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12.Be sure that the partition alrea
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The output of this comman, as shown
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4. Select your AIX version. The Fix
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3.1 DS8000 overview This section in
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Figure 3-1 IBM System Storage DS880
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Figure 3-3 DS8800 base frame with t
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3.2.3 DS command line interface for
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Select the DS8000 Subsystem and lau
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3.3.1 Fibre Channel architecture Fi
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3.4.2 Downloading and installing a
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3.4.3 BIOS configuration The first
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5. Select Configuration Settings, a
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6. From the Configuration Settings
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11.Change Selectable Boot Settings
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17.During POST, you see QLogic repo
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5. Press Ctrl-E or Alt-E to access
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Figure 3-31 shows the option to ena
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13.A new panel will ask you to sele
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Figure 3-39 Select DVD to install O
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Logical subsystem A logical subsyst
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3. Create the Volume Group to recei
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4. Start your machine and check if
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Figure 3-49 Installing Windows 2008
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e. After rebooting the server, chec
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Redundancy: Avoiding a single point
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12.Choose the Server Base Scenario
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14.Click Partitioning and then Cust
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Figure 3-62 Creating root partition
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19.Click the Install button to init
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3. Edit the /etc/sysconfig/kernel,
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8. Choose the language and click OK
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17.Decide if you want to include ad
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21.After finishing the Red Hat inst
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INITRD_MODULES="processor thermal a
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Implementation possibilities Implem
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5. Clean up the alternate disk volu
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Activating and installing the parti
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2 hdisk17 ...-W50050768014052D1-LA0
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► The NIM server is properly conf
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12.Be sure that the partition alrea
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Example 3-17 mpio_get_config -Av ou
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5. Check the configuration as shown
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11.Confirm the Install options by p
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16.To check the multipaths and the
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Tip: For /var/log, a separate parti
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4.1 Overview The XIV Storage System
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4.2.2 Host FC HBA configuration For
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5. The Adapter Settings menu is dis
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11.Select the boot LUN (in our case
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Figure 4-12 Emulex configuration pa
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7. After the BIOS has been enabled,
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12.After the Boot Entry confirmatio
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However, as seen in Figure 4-23, it
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Zoning guidelines There are many fa
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Important: For the host system to e
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Page 254 and 255: For additional XIV considerations,
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Page 274 and 275: 4.9 Installation of AIX 6.1 for SAN
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Page 278 and 279: 4.9.3 Post operating system install
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Page 282 and 283: Example 4-25 shows the output when
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Page 288 and 289: 5.1 What storage virtualization is
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Page 296 and 297: Figure 5-8 shows the recommended ca
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Page 300 and 301: The functions used in the SAN Boot
Page 302 and 303: 5.3.1 Considerations before setting
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Page 306 and 307: Attention: To create a system (clus
Page 308 and 309: Cluster characteristics: ► In SAN
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Page 312 and 313: Figure 5-16 Available MDisks Tip: A
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Page 318 and 319: 5.4.6 Creating Fiber Channel hosts
Page 320 and 321: Figure 5-27 Select host-port The dr
Page 322 and 323: 5.4.7 Mapping SAN Boot volume to th
Page 324 and 325: 3. Add the desired WWPN to the righ
Page 326 and 327: Figure 5-38 Node connectivity Verif
Page 328 and 329: 5.5 Host configuration In this sect
Page 330 and 331: 4. Select Configuration Settings, a
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Page 334 and 335: 9. Change Selectable Boot Settings
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5.5.4 Configuring an Emulex adapter
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Figure 5-66 Scan Fibre Devices Tip:
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12.During post, after Emulex banner
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Tip: Before setting up SAN Boot for
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7. Browse to the source (media) of
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5.7.1 Multipath I/O Figure 5-77 Ins
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4. After the setup completes, you a
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► You can also verify that SDDDSM
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Perform the following steps to migr
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3. Select the Remote volume (2145 f
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Figure 5-91 vSphere Login To manage
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3. You can verify the multipathing
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5.9.1 SAN Boot using SUSE Linux Ent
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6. Set the clock and time zone. Nex
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8. Click the Partitioning link to c
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10.You see a confirmation dialogue
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14.Change the Boot loader to reflec
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16.Click Ok. Now the installer will
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5. Click Next to proceed with the i
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The next window displays additional
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8. Select Review and modify partiti
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10.Select TimeZone and click Next.
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12.Click Next to start the installa
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14.The server will boot off of the
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Example 5-3 multipathd command line
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5.10 SAN Boot for AIX You can SAN B
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8. Select 2 for IPL Configuration M
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12.After the correct IP parameters
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16.Select 2 for Normal Mode Boot, a
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10.Press 5 key to Select Boot Optio
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14.Proceed with Normal Boot, as sho
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3. Press 2 to Change/Show Installat
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7. If you do not see the disk that
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11.Press 1 to start the installatio
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5.10.5 SDDPCM 7. After the system f
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394 SAN Boot Implementation and Bes
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6.1 iSCSI overview The Internet Sma
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6.1.2 iSCSI target 6.1.3 Nodes 6.1.
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6.2 iSCSI and DS5000 storage subsys
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6.4 Step-by-step iSCSI SAN Boot imp
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3. Disable any onboard or internal
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3. From the Fast!UTIL Options windo
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Figure 6-10 Initiator IP Settings 6
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9. Change the Adapter Boot Mode to
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3. You are presented with a panel f
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6. You are presented with a confirm
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c. A wizard will guide you through
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2. Next, we create the host definit
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c. In the next window, we specify t
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Figure 6-30 Select Host type f. Fin
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. In the Define Additional Mapping
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2. From the Add Host Port Identifie
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3. From the Fast!UTIL Options windo
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6.5 Operating system installation A
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4. The next window displays additio
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Figure 6-47 Master Boot Record (MBR
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7. Follow the installation wizard u
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Figure 6-51 SUSE Linux Enterprise S
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5. The next panel displays the iSCS
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Figure 6-56 Installation Settings 8
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Example 6-1 multipathd command line
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Example 6-3 Output of multipath -ll
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6.5.5 Failover/failback verificatio
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multipath -ll output does not show
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Online resources Help from IBM Thes
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discovery order 202 Disk Mirroring
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M Maintenance menu 187 Manage Host
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Switched-fabric 8, 130 switches 286
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SAN Boot Implementation and Best Pr
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