Data domain pdf

As the system starts up, the list of commands in the Summary tab updates. Optionally, click Open Console to view the boot and initialization process. You should see the CLI prompt to log in for a successful boot. You can use this address to configure or administer the system outside the vSphere Client. This chapter explains how to perform initial setup and configuration of the system in DD OS in the following sections:. Before starting the installation, provide values for the system information listed below.

Note Data Domain recommends that you print the tables in this section and record the information. Information Your Values A fully qualified host name for the system:. Optional Physical location of the VMware server:.

Serial number SN provided to you by Data Domain:. Virtual machine unique ID after initial configuration, use the system show serialno command to display this ID :. Use this table to enter Ethernet connectivity information.

By default, DHCP is enabled on both ports. Initial System Configuration You can connect to the system to perform the initial system configuration with the command-line configuration wizard, or the DDSM Configuration Wizard. You can change these IP addresses to static IP addresses during initial configuration. DHCP is only activated automatically for the first two network interface cards NICs which are built into the virtual machine template. Any extra NICs must be configured manually. Individual virtual disks are subject to overhead that reduce their amount of usable capacity to amounts lower than their specified capacity.

The DD VE instance is locked until a license file is applied. Click Browse, locate the license file for a purchased capacity license or the evaluation license included with the DD VE download, then click Apply. If you begin the configuration with the evaluation license, but wish to purchase a license later, you will need the Node Locking ID for the DD VE instance. Provisioning the storage with the CLI Procedure 1.

Log into the system with the user name of sysadmin. The default password is changeme. At the first login, use the elicense command to add a DD VE license. Type control-C to exit the configuration utility. Confirm that virtual disk dev3 exists and has the expected size: disk show hardware The output should include a line similar to the following example: dev3 VMware Virtual disk 1.

The disk show state command shows System Dev for these system disks. Add the storage disk to the active storage tier: storage add dev3 If you are adding more than one virtual disk, repeat the storage add command for each disk. For guidelines on specifying the optional spindle-group argument, see Configuring Disk Spindle Groups on page Create the file system: filesys create 6.

Enable the file system: filesys enable. After you finish You can now complete the initial system configuration. Enter the config setup command to start the configuration utility. When prompted, enter the Name, and Domain Name of the system. When prompted, configure the initial IP port. When prompted, either exit the configuration utility and continue configuring the system using the Graphical User Interface, or continue using the CLI configuration utility.

The list entries in the utility can be comma-separated, space-separated, or both. Follow the configuration utility instructions for entering appropriate values. At the end of each configuration section, you can choose to: Save, Cancel, or Retry restart the input entry as the beginning of the current section.

If you need to enable NTP, you can do so with the configuration utility. You need to configure one or more protocols for data access, depending on your environment. You also need to configure the clients for accessing the DD VE with the protocol of your choice. If you did not configure data access with the configuration wizard, use the instructions in this section. The lines mount the directories at every reboot. Configuration of optional software and internal licenses If you need to configure more than GB of storage for your DD VE, or license optional software features, you need to install and activate those licenses before you configure those features.

Any system command that accepts a list, such as a list of IP addresses, accepts entries separated by either commas or spaces. Add users to the email list that reports system problems: alerts notify-list add group-name. To Shut Down The System: system poweroff.

It is not possible to extend a virtual disk if it has already been used by the file system. Instead, expand the storage by adding a new virtual disk. If no addable devices exist, create new virtual disks as described in Adding Disks and Memory on page Using the CLI When you add a new virtual data disk to an existing DD OS file system, use the filesys expand command instead of the filesys create command.

The system will generate an error message for any attempt to increase the size of the disk group beyond 16 data drives. Load and capacity balancing in DD OS depends on correct assignment of virtual disks to disk spindle groups. You do this by specifying the optional spindle-group argument to the storage add command.

The command syntax is storage add devdisk-id spindle-group 1 For example: storage add dev3 spindle-group 1. This section describes these commands. Storage performance evaluation Manage virtual disk performance benchmark tests. Running DAT before expanding the file system requires the presence of at least one device to add to the active storage tier.

Click Configure to add devices to the active tier, or click Next if you have already added the devices to the active tier. Run the DAT to analyze the underlying storage performance. Specify one or more disks, separated by commas or spaces. Disks separated by spaces are tested in parallel. Disks separated by commas are run in series. The comma separator takes precedence over the space and nesting is not supported. This means that you can run serial tests in parallel, but not a series of parallel tests.

Only specify a device once in the list. Start two series of tests in parallel. The two series of tests are dev3 followed by dev4, and dev5 followed by dev6. With no arguments, the command prints information about the most recent test for every disk. Specify a test-id to see information about a single test. Specify all to see a table of previous and currently running tests. Specify requirements to see a table of performance goals. The disk benchmark show command conducts a test of the cache performance on the host system to determine which DD VE capacity configurations can be supported on the host.

This command may reduce performance marginally. Use the detailed option to collect more advanced information. The requirements option displays the physical storage requirements for DD VE. Command Changes alert The tenant-unit parameter is not supported. The System row has been added. Use adminaccess certificate generate instead.

Use alerts notify-list add instead. Use alerts notify-list del instead. Use alerts notify-list reset instead. Use alerts notify-list show instead. Use alerts notify-list test instead. Use autosupport show report instead. Use cifs set authentication active-directory instead. Use ddboost file-replication show instead. Use storage add instead. Use disk show state and storage show instead.

Table 8 Unsupported Commands and Command Options continued. Unsupported Command or Command Option Notes enclosure show temperature-sensors. Use filesys show space instead. Use system passphrase change instead. Use mtree retention-lock instead. Use filesys show compression daily instead. Use filesys option disable report-replica-as-writable instead.

Use filesys option enable report-replica-as-writable instead. Use filesys option reset report-replica-as-writable instead. Use filesys option show report-replica-as-writable instead.

Use snapshot schedule create [,time Use snapshot schedule create mins [retention period] instead. Use snapshot schedule create [every hrs mins] [retention period] instead. Use snapshot schedule destroy instead. Use snapshot schedule modify [,time Use snapshot schedule reset instead.

Use snapshot schedule show instead. Unsupported Command or Command Option Notes system sanitize. Use vtl group instead. Use vtl group add instead. Use vtl group del instead. Use vtl group show instead. You can also use the perf show and disk benchmark commands in DD OS to monitor and benchmark performance. The next figure on page 57 shows a Performance chart in the vSphere client.

This counter might not be displayed by default. If these counters are high, there may be a performance problem on the ESXi host. This value should always be zero. Failed commands: an increase in the average number of outstanding read and write requests indicates a performance problem. The controls and names for these statistics and counters are quite different in some versions of the vSphere client. See your VMware documentation for help displaying these statistics in your version of the VMware software.

Live migration supports moving the virtual machine from one datastore to another. Cold migration supports moving the virtual machine from one datastore to another, moving the DD VE from one virtual host to another, or both. After changing the virtual host, verify the network adapters are connected with the correct network label, otherwise the virtual machine will not be able to acquire an IP address.

The system generates a warning when a virtual machine host does not have the network label available. Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Explore Ebooks. Bestsellers Editors' Picks All Ebooks. Explore Audiobooks. Bestsellers Editors' Picks All audiobooks.

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Is this content inappropriate? Report this Document. Flag for inappropriate content. For Later. Related titles. Carousel Previous Carousel Next. Get flexible, feature-rich datacenter management at a lower cost. Jump to Page. Search inside document. Special notice conventions used in this document EMC uses the following conventions for special notices: DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

Note Presents information that is important, but not hazard-related. This chapter covers the following topics: l Supported VMware Environments Note Storage can still be configured even if the ESXi server fails the DAT assessment, but there will be a negative impact on system performance and stability.

Network adapters Up to 4 network adapters The system displays an error message if you attempt to configure a higher capacity with fewer memory and CPU resources than the amounts listed in the table above. Note When using version 5. Click Next and select the storage location. Note You can add the first or additional virtual data disks while the virtual machine is running, provided that you do not also need to add more virtual memory to support the additional disks.

Note The list of hardware shows two existing virtual disks. Click the Hardware tab and then click Add to open the Add Hardware wizard. Select Hard Disk and click Next. Note The virtual disk cannot be expanded. Note NTP is disabled by default. Note There may be a delay of several minutes until the DD OS prompt appears, depending on your hardware and configuration. Note DHCP is only activated automatically for the first two network interface cards NICs which are built into the virtual machine template.

Note If you need to enable NTP, you can do so with the configuration utility. Note Any system command that accepts a list, such as a list of IP addresses, accepts entries separated by either commas or spaces. Note It is not possible to extend a virtual disk if it has already been used by the file system. Note If no addable devices exist, create new virtual disks as described in Adding Disks and Memory on page Digital Temperature Measurement.

Two :rpproaches to n digital thermom- eter are compared here. The first is a t,liermistor bridge connected to a digi- tal voltmeter E, as shown in Figure 9. The thermistor bridge circuit con- verts temperature to voltage. I n this case t,he E,-to-E,. The resulting domain path is shown. There are four inter- domain and one intradomain conrer- sions. The second approach is the use of a quartz crystal which has a tempera- ture-dependent resonant frequency. T h e block diagram is shown in Figure A mixer is used to subtract a standard frequency, f,, from this simplification would result in state quantities which iyere not ex- t8he temperature-dependent frequency, greater accuracy, however, depends pected to vary perceptibly over the in- ft, to obtain n signal for which the fre- upon the accuracy of the converters in- terval of measurement.

When the time quency and temperature are related volved in each case. This is an example of signal d n t n domains is considered. Yote that this digital thermom- the data domain map of Figure 6, as eter requires one less interdomain con- The examples used in the previous shown in Figure Here each inter- version than that of Figure 9.

Digital recording intrLidomain conversion I n-liicli is then gas chromatograph converted by the electric field in the detector to an electrical current an in- terdomain conversion. The donxiin path for :I single conversion one time slice is t also shown. The block dingram of a digitized recording double-beam spectropliotoineter is s1ion. A nnrrow wave- length range of light from the light soiirce is selected by the monocliroina- tor and passcd on to tlic heam sxitcher n n d cell compartment.

The beam switcher alternately directs the mono- cliroiiiatic beam through the reference and sample cells to the photomultiplier tube detector. This produces an elec- Figure This circuit performs a correlntion between signal levels mea- sured a t tn-o different times. It must, therefore, have a memory and n syn- clironizing connection to the beam switcher.

The recorder is to plot ab- sorbnnce zls. The re- corder cliart drive thus has a synchro- nizing coiinection to the monochroma- tor n-avelengtli drive mechanism.

This standnrd spectrophotometer was later digitized by putting a retrans- mitting pot ;isaemlily oii tlie servore- Figure Fourier transform spectrometer corder.

Tliis converts tlie recorder pen across tlie re:il-time coiitiniiiiin. If a nccurntely represent the amplitude 2 s. W i a t can be done is n-ill be illustrated b y three examples of mechanism rather than a timer. T h e data doinnins map for the re- cessive in9t:ints in time. The numerical Gas Chyomatography. A digital re- sulting instrument is showi in Figure rewit, of rnch mcasnreinent is then cording gas chromatograph is shown It contains nine conversions; seven stored in order in memorJ- registers, or in Figure T h e components in the interdomain and two intradomnin.

The recorded on pnnclied cards or paper sample mixture are separat,ed by the esciiraion into the scale position domain tnpc, or by mngnetic recording devices. I,'D converter qiicntly rnoiigli for tlie varying quan- ionization detector. The quantity measured is ourpur aVrPui- then the sum of i h e standard units in t t the reference quantity and the differ- ence output calibrated in t,he same stan- dard units.

All measurement devices involve both a difference detector and a reference standard, although they differ widely in Figure Basic measurement sys- the degree to which one or the ot,her is tem relied upon in the measurement. As a n esample, three mass measuring devices counting is used to measure the relative can be compared in this regard.

With intensities, the number of interdomain a double pan balance, the unknown conversions is reduced to three and a mass is compared with standard digital log-ratio circuit is required. A til the difference det,ector beam Fourier transform spectrometer is an pointer points to zero. I n this case, esample of a conceptually very simple the accuracy and resolution of the stan- data acquisition system connected to a lard weights determines the accuracy comples data correlating and processing of the measurement as long as the dif- system.

The block diagram is shown in ference detector is sufficiently sensitive. The other extreme is a increments of movement of the refer- spring-loaded scale, such as a fish or ence beam mirror. Each piece of data bathroom scale. I n use, piece of data as it is acquired and thr measurement accuracy depends en- stored. There are four in- compared by the scale in this case is tcrdom:iin and tvio intradomnin con- zero weight. In b e h e e n t,hese two ex- versions in all.

After the transform tremes is the single pan balance with an cnlculation which involves an intercor- optical scale for fractional weights. This kind of analysis is helpful in assessing Errors in Domain Conversions thc soiirccs of errors in measurement clcviccs nntl in c1ioo. After considering n variety of vien.

The comparison of the quan- 5 A11 measiiremcnt devices employ tity to b c measiired with standard iiiiits both n diffcrence detector and a refer- of that qiiantity is implicit in this defi- ciicc. The comparison concept in 6 Eitlicr the diffrrence detector o r meneiirement is illiistrated b!. The difference is converted to i. Therefore, 8 Interdomain converters have the characteristics of measurement devices. Once one is accustomed to looking for the difference detector, reference stan- dard, and accuracy dependence of inter- domain converters, the basis of the con- version and the sources of error are easier to uncover.

I n both cases the conversion ac- curacy depends directly upon the stan- dard sources and, for various types, to a greater or lesser degree upon the other converter characteristics. Conversions of data within domains can often be accomplished with high ac- curacy by simple transfer devices that require no comparison or reference standard.

For instance, a resistor can be used to convert current to voltage or vice versa; the shift register will convert between serial digital and par- allel digital domains. Domain Converter Classification A classification scheme for data con- version devices would seem desirable for two purposes: to categorize b y func- tion the great many devices available, and t o provide a way to organize these devices into complete measurement sys- tems.

However, the shortest path is not al- ways the path of choice. For example, t o go from scale position to parallel digital, the direct path is However, absolute shaft rotation encoders with a high accuracy and ruggedness require- ment could cost much more than the devices needed to take route The data domains map can serve to shorn the data path from a block diagram or to devise a possible block diagram for instruments or modules, knowing only the input and output domains.

To analyze or describe an instrument, use the instrument description and block diagram to carefully follow the Figure Domain converter classification map measurement, data st ell-by-step through the instrument.

Trace out the path on a domains map as shown in Figures 7- 1. Resistor, op amp circuit Counter 2. Count rate meter Shift register 10 and S o w each converter cor- 3. F converter Nixie tubes, printer responds to a line segment on the do- 4.

Shaft rotation encoder mains map. Stepper motor be assessed by identifying and studying 5. Phase angle meter Mechanical shaft turns counter the reference source and difference de- 6. Counting gate timer Recorder tector for each conr-erter.

Modifica- 7. Retransmitting potentiometer tions to instruments can be made by 8. Programmable frequency divider Gated oscillator sum adding appropriate line segments to the Preset digital timer New sys- tenis can be designed by completing a chart like Figure 1 G for the devices ar-nilable and comparing all the possi- ble rolites between the desired input and output domains. The domains map shows three verter categories.

Figure 16 shows 21 this article are welcomed. The author electrical domains with three subdo- categories of converters arranged by in- gratefiilly acknowledges the many help- mains each, the scale position domain, put, and output domains. Examples of ful discussions he had with Dr. Hoivard the number domain, and the physical devices for each listed domain transi- llalmqtadt, Dr. Stanley Crouch, Jim and chemical domains.

For this classi- tion are given in the accompanying ta- Ingle, and his graduate students during fication, concentrating on electronic in- ble.

This map and table clearly shorn the el-ohition of these ideas. I n detailed. There are possible inter- addition, Figure 16 can be used to ob- References domain and intradoniain conversions tain and compare many possible com- among these 11 domains and subdo- binations of devices to achieve a given 1 H.

Mslmstadt and C. Enke, mains. Thus voltage-to-parallel digital A.