HP StorageWorks D2D100, StorageWorks D2D2503 System User Manual
HP StorageWorks
D2D Backup System
nl
HP D2D2503
User Guide
Part number: EH990-90905
Third edition: December 2008
Legal and notice information
© Copyright 2008 H ewlett-Packard Development Company, L.P.
Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and
12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are
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in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting
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Contents
Aboutthisguide ......................... 13
Intendedaudience..................................... 13
Relateddocumentation................................... 13
Documentconventionsandsymbols ............................. 13
HPtechnicalsupport.................................... 14
Customerselfrepair .................................... 14
Productwarranties..................................... 14
RegisteringyourHPD2DBackupSystem ........................... 14
Subscriptionservice .................................... 15
HPwebsites........................................ 15
Documentationfeedback .................................. 15
1Beforeyoustart......................... 17
Overview......................................... 17
Optionaltapeattach.................................... 18
Softwareandhardwarerequirements............................. 18
Terminology ....................................... 19
Autoloaders...................................... 19
Backupdevicesandslots................................ 19
Deduplication..................................... 19
Emulationtypes .................................... 19
HostsonanEthernetnetwork .............................. 19
iSCSI ........................................ 21
Libraries ....................................... 21
Mailslots(import/exportelements)............................ 21
Physicaltapedrives .................................. 21
RAID......................................... 22
Replication ...................................... 22
TapeAttach...................................... 22
Storagecapacity ..................................... 22
Physicalstorage.................................... 22
Taperotationstrategies................................. 22
Datadeduplication .................................... 23
Technologytypes ................................... 23
DatadeduplicationandtheHPD2D ........................... 23
BenefitsofHPD2Ddeduplication ............................ 23
Deduplicationandcompression ............................. 24
Taperotationexamplewithdatadeduplication....................... 24
Retentionpolicy.................................. 24
Dataparameters.................................. 24
Typicalsavings .................................. 24
2ConnectingandinstallingtheHPD2DBackupSystem ........ 27
Installingtherailkit .................................... 27
Overview....................................... 27
Kitcontents...................................... 27
Importantsafetyinformation............................... 27
Installationguidelines ................................. 27
Mountingtheserver .................................. 28
Connectingthehardware.................................. 32
D2D Backup System HP D2D2503
3
Supported Ethernet configurations .............................. 32
Ethernetnetworkconnection............................... 32
IPv4andIPv6networkprotocols........................... 32
Dualnetworkports................................. 32
DHCPandstaticIPaddressing............................ 33
HPD2DonaGigabitEthernetnetwork........................ 33
PoweringontheHPD2D .................................. 34
Software installation, discovery and configuration ....................... 34
InstallationwizardforWindowsusers........................... 35
RunningtheInstallationwizard............................ 35
Recommendedwebbrowsersettings ............................. 37
InternetExplorer7.X .................................. 37
InternetExplorer6.X.................................. 38
MozillaFirefox1.5,Firefox2.XandFirefox3.X ...................... 38
3Attachingaphysicaltapelibraryortapedrive(optional) ....... 39
HardwarerequirementsforTapeAttach............................ 39
Supporteddevices................................... 39
Tapedeviceinstallationoverview............................... 39
Removingthetopcover................................... 40
InstallingtheHBA ..................................... 40
RemovingthePCICage................................. 41
Removingtheslotcover................................. 41
InstallingthePCIeCard................................. 42
ReinstallingthePCICage................................ 42
Replacingthetopcover................................... 43
Connectinganexternalorrackmountstoragedevice ...................... 44
4 Advanced installation ...................... 45
Manualdriverinstallation.................................. 45
HPLTOTapedriver .................................. 45
Mediumchangerdriver................................. 45
UsingDHCPtodiscovertheHPD2DBackupSystem(IPv4only).................. 46
UsingtheDiscoveryEnginetodiscovertheHPD2DBackupSystem(IPv4only) ........... 46
Beaconmode..................................... 47
If the HP D2D Backup System is new and not yet configured ................. 47
If the HP D2D Backup System has been configuredincorrectly ................ 47
Ifthenetworksetuphasbeenchanged .......................... 47
UsingtheconsoletodiscovertheHPD2DBackupSystem(IPv4andIPv6) ............. 47
Toconnectthesystemconsole.............................. 47
iSCSIInitiator....................................... 49
ManualiSCSIinitiatorinstallation ............................ 49
TheiSCSIInitiatorandAuthentication........................... 50
TheMicrosoftiSCSIInitiator............................... 50
Generaltab.................................... 50
Discoverytab................................... 52
Targetstab.................................... 52
PersistentTargetstab................................ 54
BoundVolumes/Devicestab............................. 55
LinuxandUNIXiSCSIinitiators ............................... 55
5LEDs.............................. 57
FrontpanelLEDs...................................... 57
RearpanelLEDs...................................... 57
Beaconmode....................................... 58
6Configuringandusingreplication ................. 59
4
Replicationoverview.................................... 59
Howisreplicationinitiated?............................... 59
ReplicationandTapeAttach............................... 59
Preparingforreplication .................................. 60
Replicationconceptsandterminology............................. 60
Replicationelements.................................. 60
FanIn,FanOutandjobconcurrency........................... 61
FanOUT..................................... 61
FanIN...................................... 62
Jobconcurrency.................................. 64
Replicationdeploymentstrategies .............................. 65
ActivetoPassiveexample................................ 65
ActivetoActiveexample ................................ 66
ManytoOneexample................................. 66
ReplicationLicensing.................................... 67
Beforeyoustart .................................... 67
CreatingtheLTU.................................... 68
ApplyingtheLTU ................................... 68
TheReplicationprocess................................... 68
SeedingtheReplicationTargetAppliance......................... 68
Runningthereplicationwizard.............................. 70
RecoveringaSourceAppliance ............................... 74
Reversereplicationusingthewizard ........................... 74
Reverse replication, source lost and mapping deleted . . . . . . . . . . . . . . . . . . . . 77
PromotingaTargetLibraryovertheWANusingSCSI.................... 79
PromotingaTargetLibraryusingcolocation ........................ 81
Recoveryfromphysicalmediadirecttohost ........................ 83
7TheWebManagementInterface.................. 87
WhatistheWebManagementinterface?........................... 87
ToruntheWebManagementInterface............................ 87
Summary(Home) ..................................... 88
Statusicons...................................... 90
Devices (Configuration)................................... 90
Emulationtypesfortapedevices............................. 91
Libraries, slots and storage capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Userrecommendations............................... 92
Toviewdevicedetails ................................. 92
Toeditdevicedetails.................................. 92
Tocreateanewdevice................................. 92
Todeleteadevice................................... 94
Cartridges (Configuration) ................................. 94
Emptyslots...................................... 96
Todeleteacartridge.................................. 96
Towriteprotectacartridge ............................... 96
Toeditmaximumsize ................................. 96
Tocreateacartridge.................................. 97
Tomoveorunloadcartridges .............................. 97
Network (Configuration) .................................. 97
Network configuration ................................. 98
Toeditnetworksettings............................... 98
Resettingnetworksettingstofactorydefaults........................ 99
Beaconmode..................................... 100
Email Alerts (Configuration)................................. 100
To configureMicrosoftExchangeServer.......................... 101
Disk(Status)........................................ 102
Diskusage...................................... 102
RAID(Status) ....................................... 103
RAIDstatus...................................... 103
Physicaldisks..................................... 103
D2D Backup System HP D2D2503
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iSCSI(Status) ....................................... 104
Log(Status)........................................ 105
Sortingandsearchingthelog.............................. 106
TapeAttachpages..................................... 106
Replicationpages ..................................... 106
Status(Replication)..................................... 107
Mapping Configuration(Replication)............................. 107
Locallibrary ..................................... 108
Thereplicationwizards................................. 109
Appliance(Replication)................................... 110
Toaddatargetappliance ............................... 111
ToeditorremoveaTargetAppliance........................... 111
TargetandSourceApplianceparameters ......................... 111
LocalSettings(Replication) ................................. 112
Configureblackoutwindows............................... 112
Configurereplicationports ............................... 113
Enablebandwidthlimiting ............................... 113
EventHistory(Replication).................................. 113
Sortingandsearchingtheeventhistory.......................... 114
Admin(Settings)...................................... 114
Resettingthepassword................................. 115
Date&Time(Settings) ................................... 115
Shutdown(Settings) .................................... 116
Firmware(Settings)..................................... 117
Support(Settings) ..................................... 118
License(Settings) ..................................... 119
Moreaboutreplicationlicensing............................. 119
Moreaboutcapacityupgradelicensing.......................... 119
Toapplythelicensekey ................................ 119
8 Using Tape Attach . . . . .................... 121
Optionsforarchivingtotape ................................ 121
Anoteaboutterminology................................ 121
Archivingmethods..................................... 122
Cartridgecopy .................................... 122
WhyusetheCopyfunctionality?........................... 122
WhenwouldCopybeused? ............................ 123
Whenisitnecessarytorestorefromacopiedcartridge? ................ 123
DisadvantagesofCopy............................... 123
Cartridgeexport.................................... 123
WhyusetheExportfunctionality? .......................... 124
WhenwouldExportbeused?............................ 124
WhenwouldIrestorefromanexportedcartridge? ................... 125
DisadvantagesofExport .............................. 125
Compression ..................................... 125
Cartridgeimport.................................... 125
Tapespanning .................................... 126
TapeAttachandreplication................................. 126
UsingtheTapeAttachwebpages .............................. 126
Configuration(TapeAttach)............................... 127
Addingtapestoragedevicestothelist ........................ 127
Viewingandeditingtapedevicedetails........................ 127
Viewingcartridgedetails.............................. 128
Obtainingsupport................................. 128
Upgrading tape storage device firmware ....................... 129
Manualjobs(TapeAttach) ............................... 130
ToselectcartridgesontheHPD2Dlibrary....................... 131
Tocopytoattachedtapestoragedevice ....................... 131
Toexporttoattachedtapestoragedevice....................... 133
Toimportfromattachedtapestoragedevice...................... 134
6
Scheduledjobs(TapeAttach) .............................. 134
Tocreateascheduledjob.............................. 135
Sortingandsearchingscheduledjobs ........................ 139
Toview,editordeleteexistingschedules ....................... 139
Status(TapeAttach) .................................. 140
Tocancelajob .................................. 140
Ifanerroroccurs ................................. 141
JobHistory(TapeAttach)................................ 141
Sortingandsearchingthejobhistory......................... 142
9Copyusingatapedriveattachedtothehost ............ 143
Requirements ....................................... 143
Tapedrivessupported ................................. 143
Archivefromhosttotapeprocess .............................. 143
Furtherinformation................................... 144
Compression ....................................... 144
10Restoreprocesseswithoutreplication ............... 145
Restorescenarios ..................................... 145
RestoringfromtheHPD2DBackupSystem........................... 146
Restoreanddeduplication.................................. 146
ReconnectingtotheHPD2Dafterhostfailure ......................... 146
11Troubleshooting ........................ 151
Connectingthehardware.................................. 151
Connecting to the HP D2D from the backup application . . . . . . . . . . . . . . . . . . . . . 151
Connectingtothenetwork ................................. 151
Performance ....................................... 152
Network ....................................... 152
WebManagementInterfaceerrorsandwarnings........................ 152
DiskRAIDerrorsandwarnings ............................. 152
Networkwarnings................................... 153
Systemstate...................................... 153
PowerOn/OffProblems .................................. 153
HPD2Dshutsdownautomatically ............................ 153
HPD2Ddoesnotbootupcorrectly............................ 153
HPD2Dbootsupcorrectly,butcannotbeseenonthenetwork................ 154
CannotconnecttoWebManagementInterface ........................ 154
HPD2Disnotvisibleonthenetwork........................... 154
CannotlogintotheWebManagementInterface...................... 154
CannotauthenticateaniSCSIsession............................. 154
IftheHPD2DBackupSystemrunsoutofdiskspace ...................... 154
HP D2D configurationproblems ............................... 154
Icannotseeanewlycreateddevice ........................... 154
I cannot see additional slots from the backup application . . . . . . . . . . . . . . . . . . 155
Replacementofhardware.................................. 155
Eventlogdisplays‘InvalidBIOSAssemblyname’...................... 155
RAIDbatterybackupstatus ............................... 155
IftheRAIDbatteryfails................................. 155
12Harddiskreplacement ..................... 157
RAID5.......................................... 157
HowdoIknowadiskhasfailed? .............................. 157
Ifyouhaveasystemconsole .............................. 159
Ifyouhaveemailalerts................................. 160
TheEventLog..................................... 160
Electrostaticdischargeinformation .............................. 161
D2D Backup System HP D2D2503
7
Replacingtheharddisk................................... 161
EmailalertsandLog.................................. 168
Ifyouhaveasystemconsole .............................. 168
Ifseveraldisksfail..................................... 169
Replacingthedisks .................................. 170
InitializingRAID.................................... 171
Createcartridges ................................. 171
Index .............................. 173
8
Figures
1
FrontviewoftheHPD2DBackupSystem...................... 17
2
Rear view of the
3
Device configurationwithonehost ........................ 20
4
Device configurationwithmultiplehosts ...................... 21
5
Datastoredafterdeduplication.......................... 23
6
Space saving
7
Attachtherailstotherackcolumns ........................ 29
8
Insert the H
9
CTObracketlocation .............................. 31
10
Secure the
11
Networkandpowerconnectors.......................... 32
12
Connectingtoabusinessserveronthemainnetwork ................ 33
13
Connectingtoadedicatedbackupnetwork..................... 34
14
PoweringontheHPD2DBackupSystem...................... 34
15
Removingthetopcover ............................. 40
16
Removi
17
Removingtheslotcover(lowprofile)........................ 42
18
Insta
ngthePCIcage ............................. 41
lling the PCIe card (in the low profileslot) ................... 42
HPD2DBackupSystem...................... 18
withdeduplication ......................... 25
PD2Dintotherack.......................... 30
HPD2Dtotherack .......................... 31
19
ReinstallingthePCIcage............................. 43
20
SecuringthePCIcage.............................. 43
21
Replacingthetopcover ............................. 44
22
SystemconsoleconnectionsontheHPD2D..................... 48
23
Systemconsolescreen.............................. 48
24
iSCSIInitiatordownloadpage .......................... 49
25
Generaltab(iSCSI)............................... 51
26
CHAPsecret.................................. 51
27
Discoverytab(iSCSI) .............................. 52
28
Addtargetportal................................ 52
29
Targetstab(iSCSI) ............................... 53
30
AdvancedsettingsCHAP ............................ 54
31
PersistentTargetstab(iSCSI) ........................... 55
32
FrontviewoftheHPD2DBackupSystem...................... 57
33
RearpanelLEDs ................................ 58
D2D Backup System HP D2D2503
9
34
ReplicationandTapeattach ........................... 60
35
Replicationelements .............................. 61
36
FanOUTexampleforHPD2D400xandD2D41xx ................. 62
37
HPD2D2500FanOUTexample......................... 62
38
HPD2D250xSeriesFanINexample ....................... 63
39
HPD2D400xand41xxSeriesFanINexample................... 64
40
Active to Pa
41
Activetoactivereplicationexample........................ 66
42
Manytoonereplicationexample......................... 67
43
SeedinginitialdatausingTapeAttach....................... 69
44
Replicationcreationprocess ........................... 70
45
Recoverybyrepopulatingareplacementsourceappliance .............. 75
46
Reversereplicationprocess:sourcelost,mappingintact ............... 76
47
Reversereplicationprocess:sourcelost,mappingdeleted............... 78
48
Recov
49
RecoverybyrelocatingtheTargetAppliance .................... 81
50
Recoveryprocess:promotingatargetlibraryusingcolocation............. 82
51
Recoveryprocess:usingphysicaltape....................... 84
52
Createnewtargetappliance........................... 111
53
Cartridgecopy................................. 122
54
55
tridgeexport ................................ 124
Car
Cartridgeimport ................................ 126
ssivereplicationexample ....................... 66
eryprocess:promotingatargetlibraryovertheWAN ............. 80
56
Archivingtotape................................ 144
57
SummarypagewithRAIDstatuswarning...................... 158
58
dentifyingthefaileddisk ............................ 159
I
59
Systemconsoleshowingfaileddisks........................ 160
60
ogshowingdiskfailure............................. 161
L
61
Removingthetopcover ............................. 162
62
Removingthemiddlecover............................ 163
63
Disknumbering ................................ 163
64
Removingtheharddriveassembly......................... 164
65
Removingdiskfromcarrier............................ 164
66
Installingdiskincarrier ............................. 165
67
Fasteningdisktocarrier............................. 165
68
Installingthedisk................................ 166
69
Reinstallingthetopmiddlecover ......................... 166
70
Reinstallingthetopcover ............................ 167
10
71
RAIDrebuilding ................................ 168
72
SystemconsoleduringRAIDrebuild........................ 169
73
Statusshowingmultiplediskfailure ........................ 170
74
RAIDshowingtwodiskfailures.......................... 170
75
Devices page a
76
Systemconsoleaftertwodisksarereplaced .................... 171
waitingRAIDinitialization ..................... 170
D2D Backup System HP D2D2503
11
Tables
1
2
3
4
5
Documentconventions.............................. 13
Datadeduplicationsavings,example1 ...................... 25
FanIn,FanOutandjobconcurrencyrules ..................... 65
Summarypagelayout.............................. 89
Deviceparameters(tophalfofthepage)...................... 91
6 Device param
7
Cartridge parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
8
Network par
9
Networkportparameters ............................ 99
10
Emailparameters................................ 101
11
Physicaldiskparameters............................. 104
12
Local library parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
13
Replicationsourceforlocallibraryparameters ................... 109
14
Slotmappingforlocallibrarytosourcelibraryparameters .............. 109
15
Targetapplianceparameters........................... 111
16
Source
17
Jobscheduleparameters............................. 138
18
Scheduledjobdetails.............................. 139
19
Restorescenarios................................ 145
eters ............................... 92
ameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
applianceparameters........................... 112
12
About t his guide
This guide provides information about:
• Installing the HP StorageWorks D2D Backup System
• Using the H P StorageWorks D2D Backup System
• Troubleshooting the HP StorageWorks D2D Backup System
Intended audi
This guide is intended for users who install, operate a nd maintain the HP StorageWorks D 2 D Backup
System.
ence
Related documentation
In addition to this guide, the following document provides related information:
• ‘Starthere’posterforanoverviewoftheinstallationinformationinthisguide(availablein
English, French, German and Japanese)
You c an fi nd these documents from the Manuals page of the HP Business Support Center website:
ttp://www.hp.com/support/manuals
h
In the Storage section, click Storage S olutions and then select your product.
ttp://www.hp.com/support/manuals
h
Document conventions and symbols
Table 1 Docu
Convention
Blue text: Table 1
Blue, unde
Bold text
ment conventions
rlined text: h
ttp://www.hp.com website addresses
Element
Cross-reference links and e-mail addresses
• Keys that are pressed
• Text typed into a GUI element, such as a box
• GUI elements that are clicked or selected, such as
menu and list items, buttons, tabs, and check boxes
Italic text Text emphasis
Monosp
Monospace, italic text
Monospace, bold text
ace text
• File and directory names
• System output
• Code
• Commands, their arguments, and argument values
• Code variables
• Command variables
Emphasized monospace text
D2D Backup System HP D2D2503
13
WARNING!
Indicates that failure to follow directions could result in bodily harm or death.
CAUTION:
Indicates that failure to follow d irections could result in damage to equipment or data.
IMPORTANT:
Provides clarif
NOTE:
Provides additional information.
ying information or specific instructions.
HP technical support
For worldwide technical suppor t information, see the HP support website:
h
ttp://www.hp
Before contacting HP, collect the following information:
• Product model names and numbers
• Technical supp
• Product serial numbers
• Error messages
• Operating sys
• Detailed questions
.com/support
ort registration number (if applicable)
tem type and revision level
Customer self repair
HP customer self repair (CSR) programs allow you to repair your StorageWorks product. If a CSR
part needs replacing, HP ships the part directly to you so that you can install it at your convenience.
Some parts do not qualify for CSR. Your HP-authorized service provider will determine whether a repair
can be accomplished by CSR.
For more information about CSR, co ntact your local service provider. For North America, see the CSR
website:
ttp://www.hp.com/go/selfrepair
h
Product warranties
For informa
h
tion about HP StorageWorks product warranties, see the warranty information website:
ttp://www
.hp.com/go/storagewarranty
Registering your HP D2D Backup System
Once you have installed and tested your HP D2 D Backup System please take a few minutes to register
your product. You can register via the web (h
14
About this guide
ttp://www.register.hp.com).
To ensure your registration is complete, there are a number of questions on the electronic form that are
mandatory. Other questions are o ptional. However, the more you feel able to complete, the bet ter HP
can meet your needs.
Subscription service
HP recommends that you register your product at the Subscriber’s Choice for Business website:
ttp://www.hp.com/go/e-updates
h
After registering, you will receive e-mail notification of product enhancements, new driver versions,
firmware updates, and other product resources.
HP websites
For additional information, see the following HP websites:
ttp://www.hp.com
•h
•http://www.hp.com/go/ebs
•http://www.hp.com/go/connect
•http://www.hp.com/go/storage
•http://www.hp.com/service_locator
•http://www.hp.com/support/manuals
•http://www.hp.com/support/downloads
Documentation feedback
HP welcome
To make comments and suggestions about product documentation, please send a message to
storagedocs.feedback@hp.com. All submissions become the property of HP.
s your feedback.
D2D Backup System HP D2D2503
15
16
About this guide
1 Before you star t
In this chapter:
• “Overview” on page 17
•
“Optional tape attach”onpage18
•
“Software a nd hardware requirements” on page 18
•
“Terminology” on page 19
• “Storage capacity” on page 22
•
“Data deduplication” on page 23
Overview
The HP Stora
to six tape devices, which can be used to back up host network servers or PCs. Each tape device
is configured as an Ultrium Tape Library or Autoloader. An emulation type is selected during initial
configuration and this determines the maximum number of s lots that may be configured for the device.
The default configuration emulates the HP StorageWorks 1/8 G2 Ultrium Tape Autoloader.
geWorks D2D Backup System is an iSCSI disk-based storage appliance that emulates up
1. Power On button/LED
2. Hard disk drives
3. HP D2D Beacon LED
Figure 1 Front view of the HP D2D Backup System
4. System health LED
5. LAN port 1 LED
6. LAN port 2 LED
D2D Backup System HP D2D2503
17
1. Power supply cable socket
5. PCIe slots (one full and one low profile)
2. LAN port 1
3. LAN port 2
4. Management LAN port (Do not connect to this port)
Figure 2 Rear view of the HP D2D Backup System
NOTE:
One full PCIe slot has a SmartArray RAID controller card pre-installed. The other slot is available for
optional T
ape Attach.
6. VGA por t for system console monitor
7. PS/2 ports for system console keyboard and mouse
Optional tape attach
An external or rackmount Ultrium Tape Drive may be attached directly to the H P D2D Backup System,
allowing the user to store backups offsite. Both SAS and SCSI tape drives are supported and require
installation of a host bus adapter (HBA). External tape drives may be half-height or full-height. Rackmount
tape drives are installed in a rackmount enclosure, such as a 1U Rack, 3U Rack or a TapeArray.
To find out which Ultrium Tape Drive models and HBAs are supported, refer to
ttp://www.hp.com/go/connect or http://www.hp.com/go/ebs.
h
Software and hardware requirements
Refer to http://www.hp.com/g o /connect or http://www.hp.com/g o/ebs for the latest connectivity
and compatibility information.
• The HP D2D Backup System should b e connected to a Gigabit Ethernet network. 100 Base-T
Ethernet will limit performance; 10 Base-T Ethernet will severely limit performance.
• For backup and restore you need software that supports tape autoloaders and libraries. This
software resides on the host, not the HP D2D Backup System. The device may be used with the
major backup applications from HP, Symantec, EMC, Computer Associates and others.
18
Before you start
Terminology
Autoloaders
An autoloader is a backup device that has a single tape drive and multiple storage slots. (A library has
multiple tape drives, see “Libraries” on page 21.) Each storage slot contains a cartridge that can be
allocated to a specific backup task; for example, one car tridge can hold Monday’s data, another can
hold Tuesday’s data, and so on. In this way, backup applications are able to implement tape rotation
strategies that accommodate differing backup requirements for daily, weekly, monthly, yearly backups.
Backup device
Backup device
the HP D2D Backup System which, as in tape terminology, is referred to as slots or cartridges.
The HP D2D supports the following emulation types: HP 1x8 G2 Autoloader, HP MSL Library (2x24), HP
MSLLibrary(4x24)andD2DBSGenericLibrary(48slots). Thedefaultof1x8G2Autoloaderiscorrect
for many applications. (The number of drives is always restricted to 1, regardless of emulation type.)
See also “Devices (Configuration)”onpage90.
When you configure your HP D2D Backup System with a tape library, the drive emulation type that you
select determines the amount of physical disk space that is made available for each con figured slot.
LTO-2defaultsto200GB,LTO-3defaultsto400GBandLTO-4defaultsto800GB.Thisistheequivalent
of a tape li
spanning
When you c
disk spac
200 GB tape cartridge, which cannot be unloaded. Tape spanning is impossible, so the data to be
backed up must not exceed 200 GB.
Deduplication
Data deduplication compares blocks of data being written to the backup device with data blocks
previously stored on the device. If duplicate data is found, a pointer is established to the original data,
rather than storing the duplicate data sets. This removes, or “deduplicates,” the redundant blocks. See
also “Data deduplication” on page 23.
sandslots
s appear to the host as locally-attached tape devices, but physically, they use disk space on
brary with multiple slots, each containing a 200, 400 or 800 GB cartridge. Both tape
and, more importantly, flexible tape rotation strategies are possible.
onfigure your HP D2D Backup System with a standalone tape drive, 200 GB of physical
e is made available for that tape drive. This is the equivalent of a permanently- mounted
Emulat
ion types
HP D2D products emulate a range of physical Tape Autoloaders or Tape Libraries. Supported emulation
are listed below:
types
• HP 1x8 G2 Autoloader
• HP MSL2024 Library
• HP MSL
• HP D2DBS Library
If it is supported by your backup application, HP D2DBS Library is the preferred emulation type to be
used
D2D device. It is the most flexible emulation type available; however, backup application suppor t varies
by software vendor. See also “Emulation types for tape devices” on page 91.
4048 Library
because it does not emulate any physical library types in existence and is clearly identifiable as a
HostsonanEthernetnetwork
Each emulated backup device is uniquely mapped to an individual h ost; this is the network server or
PC that you wish to back up.
• The backup device appears to the host as a locally-attached tape autoloader or library.
• The backup device is accessed and managed from the backup software running on the host.
D2D Backup System HP D2D2503
19
• The backup device is not visible to other devices on the network.
• Multiple servers may not back up to a single b ackup device.
Figure 3 on page 20 shows a configuration with a single host. The Installation wizard has been run
on Host 1. The HP D2D Backup System automatically generates a library for the host. The user may
specify the number of slots during installation.
Host3Host2 Host4/5/6Host1
LAN
Library 1
HP StorageWorks D2D Backup System
Figure 3 Device configuration with one host
• Bydefault,onlyonedeviceisvisibletothehost,thelibrarythathasbeenconfigured for it during
installation. Data from each host goes to its corresponding library.
• Each backup device is visible only to the host for which it has been configured.
• A host may have multiple devices configured for it on the HP D2D Backup System, but this means
fewer hosts may be connected (not illustrated).
Figure 4 on page 21 shows a con fig uration with three hosts. The HP D2D Backup System can be used
to back up a maximum of six hosts. The Installation wizard automatically generates a library for each
host. The user may specify the number of slots during installation.
20
Before you start
iSCSI
Host4 onwardsHost1 Host2 Host3
LAN
Library 1 Library 2 Library 3
HP StorageWorks D2D Backup System
Figure 4 Device configuration with m ultipl e hosts
On an Ethernet network the HP D2D Backup System is configured as an i SCSI device. This
means that the HP D2D Backup System plugs directly into the network, but it presents devices as
directly-attached SCSI autoloaders to host machines. In order to function, it requires an iSCSI initiator.
On Window
“Connecting and installing the HP D2D Backup System” on page 27. For more information about iSCSI,
see “Advanced installation” on page 45. Linux and UNIX users should also refer to the “Linux and UNIX
Configuration Guide” on the HP StorageWorks D2D Backup System CD-ROM for more information.
s systems, this is normally downloaded by the Installation wizard, as described in
Libraries
A tape library is a backup device that has multiple drives and multiple storage slots. Each storage slot
contains a cartridge. The difference between an autoloader and a library is that a library can support
multiple tape drives whereas an autoloader only has one tape drive. This provides considerable storage
capacity and full support for tape rotation strategies. (It may b e necessary to upgrade your backup
application to support libraries.)
Mail slots (import/export elements)
Amail
impo
Back
Expo
slot is a term borrowed from tape terminology to identify a dedicated slot that is used specifically to
rt and export cartridges. They are sometimes called import/export elements by backup applications.
up applications that suppor t this feature move cartridges from the m ail slot when the user runs an
rt job, and look for cartridges in the mail slot when the user runs an Import job.
Physical tape drives
A physical tape drive is a tape drive that is attached to the HP D2D Backup System or the host computer,
so that data can be moved from the HP D2D Backup System and stored offsite. (It should not be confused
withthetapedrivedevicethatisattachedtothelibrarydeviceontheHPD2DBackupSystem(see
“Devices (Configuration)” on page 90.)
D2D Backup System HP D2D2503
21
RAID
RAID stands for Redundant Array of Inexpensive (or Independent) Devices, which is a data storage
scheme that divides data among multiple hard drives, increasing data reliability and throughput. The
HP D2D Backup System is a RAID 5 device, which offers the best combination of data p rotection and
capacity. It ha
System continues to operate co rrectly. The failed disk should always b e replaced as soon as possible.
Replication
Replication is a standard term used to describe a way of synchronizing data between hardware in two
physical locations. HP D2 D Replication allows users to replicate data from cartridges on one HP D2D
Backup System to mapped slots on another HP D2D Backup System on a remote site or the same system.
Once con figured (using the simple-to-use wizard), replication occurs automatically, ensuring data is
mirrored from the source to the target HP D2Ds. Deduplication ensures that network trafficisminimized.
See also “Configuring and using replication” on page 59.
Tape Attach
If you attach a supported, physical tape library or tape drive directly to your HP D2D Backup System,
you will be able to copy or export data to the physical tape library or tape drive so that backups can
be stored o
between copy and export is that copied data remains on the HP D2D Backup System; exported data
is removed from it, but can be imported easily when required. These functions are grouped under the
Tape Attach section of the Web Interface. Please see “Using Tape Attach” on page 121 for more
details a
s four hard disks, but if one of the disks fails, no data is lost and the HP D2D Backup
ffsite. This is an impor ta nt requirement for Disaster Recovery strategies. The main difference
bout working with Tape Attach.
Storage capacity
Physical storage
The physical storage capacity of the HP D 2 D Backup System is 3.0 TB (3000 G B ). However, in order to
ensure a high level of data integrity, the disks use RAID 5 protection. This reduces the available capacity
but ensures that, in the event of a single disk failure in the device, there will be no data loss.
Actual storage c apacity is approximately:
• 2.25 TB
Data deduplication is enabled by default for each library device. This eliminates duplicate data from
backups and means that more histories of data can be stored and retained for longer on each library.
See als
You ca n
space
• Review your backup jobs to see if you can reduce the s ize of backup or retention time.
• Use the backup application job settings to overwrite or erase data.
• Expor
Tape rotation strategies
Tape rotation strategies determine when ba ckups are run, the number of cartridges that are required and
how they are reused. The HP D2D Backup System is a very flexible device that can easily be incorporated
into most tape rotation strategies. If your organization does not yet have a tape rotation strategy in place,
see “Tape rotation example with deduplication” on page 24 for example configurations.
for the HP D2D Backup System
o“Data deduplication” on page 23.
not add physical disk space, but you may be able to create some space. Options for creating
, if the disks start to get full, are:
tcartridgestophysicaltape.
22
Before you start
Data deduplicat
ion
Data deduplica
previously sto
rather than storing the duplicate data sets. This removes, or “deduplicates,” the redundant blocks. The
key part of this is that the data deduplication is being done at the block level and not at the file level
which reduces the volume of data stored significantly.
Figure 5 Data stored after deduplication
tion compares blocks of data being written to the backup device with data blocks
red on the device. If duplicate data is found, a pointer is established to the original data,
In actual practice, data d eduplication is often used in conjunction with other forms of data reduction such
as conventional data compression to offer the greatest reduction in data volume stored.
Technology types
There are a number of technology types that use different deduplication algorithms. The HP D2D applies
on-the-fly deduplication to chunks of backup data as they are written to the unit. It does not matter which
application was used to create the backup. For further information about deduplication techniques an d
relative benefits, refer to the white papers at h
Data deduplication and the HP D2D
Data deduplication is applied per library device. When you configurethelibrary,itdefaultsto
deduplication enabled. If you disable it, deduplication cannot be selectively applied to any data on the
library device. Compression is also disabled, if deduplication is disabled.
A library is associated with a host server and deduplication allows a greater amount of backup history
to be stored for that host. A larger number of full backups can be achieved, which makes possible a
rotation strategy with a longer retention history. It does not increase the number of host servers that
may be connected. The deduplication factor that has been applied to a library device is calculated
and displayed on the Web Interface. This figure is dynamic, it updates automatically as more data is
written to the library.
Benefits of HP D2D deduplication
The main benefit is that it is possible to store more data and retain data for longer on each cartridge
within a library. The host using the library device has access to a greater depth of historical data
that would otherwise have been archived offline.
Deduplication:
• Provides efficient use of storage capacity by eliminating duplicate data
ttp://www.hp.com.
D2D Backup System HP D2D2503
23
• Reduces disk expenditures by reducing storage space required. You can get more backups for each
hostonthesamesizeofstorage(HPD2Ddevice)
• Prolongs disk data retention p eriods
• Reduces the volume of data that must be sent a cross a WAN for remote backups, replication, and
disaster recovery – reducing both risk and operational costs
See “Configuring and using replication” on page 59 for more information about replication.
Deduplication and compression
Compression is applied as part of deduplication. You can expect 1.6:1 compression even on the first
backup where no (or only a sm all amount of) de duplication can occur. If you disable deduplication, see
“Devices (Co
nfiguration)” on page 90, no compression is applied to data on tha t device.
Tape rotation example with data deduplication
The two most significant factors affecting the deduplication ratio for backup are:
• How long do you retain the data?
• How much data changes between backups?
The following example shows projected savings for a 1 TB file server backup.
Retention policy
• 1 week, daily incrementals (5)
• 6 months, weekly fulls (25)
Data parameters
• Data compression rate = 2:1
• Daily change rate = 1% (10% of data in 10% of files)
Typical savings
The following table illustrates a reduction of approximately 11:1 in data stored. In practice, assuming
1.25 TB is available for backup for this library, this means:
• Without data deduplication: only two weeks of data retention is possible before it is necessary to
archive
• With data deduplication: even after six months less than 1.25 TB of disk space has been used.
The following table illustrates h ow this affects the space required to store the data over 25 weeks. The
figures are used to generate the graph shown after the table.
data offline.
24
Before you start
Table 2 Data deduplication savings, example 1
1st daily full backup
1st daily incremental backup
2nd daily incr
3rd daily incremental b ackup
4th dai ly incremental backup
5th dai ly incremental backup
2nd weekly full b ackup
3rd weekly full backup
25th weekly full backup
emental backup
Data stored nor
mally
Data stored wit
500 GB 500 GB
50 GB 5 GB
50 GB 5 GB
50 GB 5 GB
50 GB 5 GB
50 GB 5 GB
500 GB 25 GB
500 GB 25 GB
500 GB 25 GB
hdeduplication
TOTAL 12,750 GB 1,125 GB
Space saving with deduplication
14000
12000
10000
8000
6000
Space in GB
4000
Without
Dedupe
With
Dedupe
2000
0
12345678910111213141516171819202122232425
End of week
Figure 6 Space saving wit h deduplication
D2D Backup System HP D2D2503
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26
Before you start
2 Connecting and installing the HP
D2D Backup System
In this chapter:
•
“Installing the rail kit” on page 27
•
“Connecting the hardware”onpage32
•
“Supported network configurations”onpage32
•
“Powering on the HP D2D” on page 34
•
“Software installation, discovery and confi guration” on page 34
•
“Web browser settings” on page 37
Installing the rail kit
Overview
This section contains instructions for installing HP rack rails into square a nd round hole racks for the
HP D2D (1U) and HP D2D (2U) Backup Systems.
Kit conte
nts
• Two rack rails (left and right)
• Mounting
• Two tie wraps
NOTE:
If mounting the HP D2D into threaded hole or telco racks, please see h
purchas
hardware for square and round hole racks
emountinghardware.
Important safety information
See also the Safety Booklet on the HP StorageWorks D2D Backup System CD- ROM.
CAUTION:
Electrostatic discharge (ESD) can damage electronic components. Be sure you are properly grounded
(earthed) before beginning any installation procedure.
Installation guidelines
This installation is to be performed by qualified individuals who have knowledge of the procedures,
precautions, and hazards associated with equipment containing hazardous electrical circuits.
ttp://www.racksolutions.com to
D2D Backup System HP D2D2503
27
WARNING!
These rails, when installed, form only a shelf for the server to rest on. The server is not attached to the rail
by any other means. Use extreme caution when pulling the server out from the rack; it can slip and
fall, causing damage to the server or injury. HP is not responsible for any damage or injury caused by
the mishandling of the server.
WARNING!
Ensure that the rack is level and stable before working on the rack. Be sure the leveling jacks (feet) extend
to the floor and that the full weight of the rack rests firmly on the floor.
WARNING!
Ensure that the rack has anti-tip measures in place. Such measu res may include floor-bolting, anti-tip
feet, ballast, or a combination of these as specified by the rack manufacturer and applicable codes.
WARNING!
Ensure that sufficient personnel are on hand to support the product(s) during the installation process. Use
of the appropriate lifting device is recommended as an installation aid.
WARNING!
Always load the rack from the bottom up. Load the heaviest items in the rack first. This makes the rack
bottom-heavy and helps prevent it from becoming unstable.
WARNING!
Do not overload the branch circuit that provides power to the rack. The total rack load should not
exceed 80 percent of the branch circuit rating.
Mounting the server
1. Position left and right rack rails at the desired ’U’ position in the rack.
NOTE:
Therailscanbeadjustedtofittherack.
2. Secure rack rails to the front and back rack columns using screws. Make sure that the shoulders
of the screws fit inside the square or round holes of the rack.
NOTE:
If installing rails into a square hole rack, use larger-sized shoulder screws and pins for mounting. If
installing rails into a round hole rack, use smaller-sized shoulder screws and pins for mounting.
28
Connecting and installing the HP D2D Backup System
Figure 7 A ttach the rails to the rack columns
3. Slide the HP D2D into position on the rails.
IMPORTANT:
The label on the top of the HP D2D contains useful identity information, such as the MAC address
and default network name. Make a note of this information before you install the HP D2D in the
rack. There is also a p ull-out strip in the front panel with the serial number and port ID.
D2D Backup System HP D2D2503
29
Figure 8 Insert the HP D2D into the rack
NOTE:
The rear ends of the rails have a CTO bracket that must overlap the chassis tab in order to secure the
HP D2D to the rails.
30
Connecting and installing the HP D2D Backup System
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