HP ProLiant DL100 G2 DPSS Instruction Manual

HPProLiantDL100G2StorageServer
administration guide
This guide provides hardware and software information for using the HP ProLiant DL100 G2 Storage Server with
Microsoft®Windows®Storage Server 2003 R2.
5697-5587
Part number: 5697–5587
First edition: March 2006

Legal and notice information
© Copyright 2006 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or
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this document is subject to change without notice. The only warranties for HP products and services are set forth in the express
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warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.
Microsoft®,Windows
®, and Windows NT®are U.S. registered trademarks of Microsoft Corporation.
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Hewlett-Packard Company shall not be liable for technical or editorial errors of omissions contained herein. The information is
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products are set forth in the express limited warranty statements for such products. Nothing herein should be construed as
constituting an additional warranty.
HP ProLiant DL100 G2 Storage Server administration guide

Contents
Aboutthisguide ......................... 13
Intendedaudience..................................... 13
Relateddocumentation................................... 13
Documentconventionsandsymbols ............................. 13
Documentconventions ................................. 14
Textsymbols ..................................... 14
Equipmentsymbols................................... 15
Equipmentsymbols..................................... 15
Gettinghelp ....................................... 16
HPtechnicalsupport.................................. 16
HPSubscriber’sChoice............................... 16
HP-authorizedreseller ............................... 17
Helpfulwebsites ................................. 17
1TheHPstorageserversolution................... 19
Server identification .................................... 19
Thestorageenvironment .................................. 19
SAN......................................... 19
NAS......................................... 19
FibreChanneltechnology................................ 20
SerialATAtechnology ................................. 20
SerialATAversusSCSIandFibreChanneldisks .................... 20
Tieredstorageenvironments............................. 20
iSCSItechnology ................................... 21
WindowsStorageServer2003editions............................ 21
ComparisonbetweeneditionsofWindowsStorageServer2003............... 22
Storageserverroles .................................... 24
Fileserver ...................................... 24
Printserver...................................... 24
FilePrintAppliance .................................. 25
Environmentscenarios ................................... 25
Workgroup...................................... 25
Domain ....................................... 25
2 Storage server specifications and image configurations........ 27
Frontview ........................................ 27
Rearview......................................... 28
Serverchassislayout.................................... 29
Storage server configurations ................................ 30
Factoryimage....................................... 32
Physical configuration ................................. 32
Two-HDD configurations .............................. 32
DL100 G2 four-HDD configurations ......................... 33
Defaultbootsequence ................................. 34
3Remoteaccess,monitoring,andsetupcompletion.......... 35
RemoteBrowser...................................... 35
RemoteDesktop...................................... 35
Loggingoffanddisconnecting.............................. 36
HPProLiantDL100G2StorageServeradministrationguide 3

AccessingRemoteDesktop ............................... 36
TelnetServer ....................................... 36
EnablingTelnetServer ................................. 36
Sessionsinformation................................ 36
ServerManagementSystem................................. 37
Setupcompletion ..................................... 37
4Storagemanagementoverview .................. 39
Storagemanagementelements ............................... 39
Storagemanagementexample.............................. 39
Physicalstorageelements................................ 40
Arrays...................................... 41
Faulttolerance .................................. 41
OnlineSpares................................... 42
Logicalstorageelements ................................ 42
Logicaldrives(LUNs)................................ 42
Partitions..................................... 43
Volumes ..................................... 43
Filesystemelements .................................. 44
Filesharingelements.................................. 44
VolumeShadowCopyServiceoverview.......................... 44
Usingstorageelements................................. 44
Clusteredserverelements................................ 44
5Fileservermanagement ..................... 47
New or improved fileservicesfeaturesinWindowsStorageServer2003R2............ 47
CreateLUNWizard .................................. 47
DistributedFileSystem ................................. 47
FileServerManagementConsole ............................ 48
StorageManagerforSANs............................... 48
SingleInstanceStorage................................. 48
Searchenhancements ................................. 49
FileServerResourceManager.............................. 49
WindowsSharePointServices.............................. 49
HPStorageServerManagementConsole......................... 49
Fileservicesmanagement.................................. 49
Configurable and pre-configuredstorage ......................... 50
Storagemanagementutilities .............................. 51
Arraymanagementutilities ............................. 51
Array ConfigurationUtility ............................. 51
HPStorageManager................................ 52
DiskManagementutility .............................. 53
DiskPartutility................................... 54
Guidelinesformanagingdisksandvolumes........................ 56
Storage servers with configurablestorage....................... 56
Storage servers with pre-configuredstorage ...................... 56
Schedulingdefragmentation............................... 57
Diskquotas...................................... 57
Addingstorage.................................... 58
Expandingstorage................................. 58
ExpandingstorageforEVAarraysusingCommandViewEVA .............. 58
Expanding storage using the Array ConfigurationUtility................. 59
ExtendingstorageusingWindowsStorageUtilities................... 60
Volumeshadowcopies................................... 62
Shadowcopyplanning................................. 62
Identifyingthevolume ............................... 63
Allocatingdiskspace ............................... 63
Identifyingthestoragearea............................. 64
Determining creation frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4

Shadowcopiesanddrivedefragmentation ........................ 65
Mounteddrives .................................... 65
Managingshadowcopies ............................... 65
The shadow copy cache file............................. 66
Enablingandcreatingshadowcopies ........................ 67
Viewingalistofshadowcopies ........................... 68
Setschedules................................... 68
Viewingshadowcopyproperties........................... 68
Disablingshadowcopies.............................. 68
Managingshadowcopiesfromthestorageserverdesktop.................. 69
ShadowCopiesforSharedFolders............................ 69
SMBshadowcopies................................ 70
NFSshadowcopies ................................ 71
Recovery of filesorfolders ............................. 71
Recovering a deleted fileorfolder .......................... 71
Recovering an overwritten or corrupted file ...................... 72
Recoveringafolder ................................ 72
Backupandshadowcopies............................. 72
ShadowCopyTransport ................................ 73
Folderandsharemanagement................................ 73
Foldermanagement .................................. 74
Sharemanagement .................................. 79
Shareconsiderations................................ 80
DefiningAccessControlLists ............................ 80
Integrating local filesystemsecurityintoWindowsdomainenvironments.......... 80
Comparingadministrative(hidden)andstandardshares................. 80
Managingshares ................................. 81
FileServerResourceManager................................ 81
Quotamanagement .................................. 82
Filescreeningmanagement............................... 82
Storagereports .................................... 82
OtherWindowsdiskanddatamanagementtools ....................... 82
Additional information and references for fileservices...................... 84
Backup........................................ 84
HPStorageWorksLibraryandTapeTools ......................... 84
Antivirus ....................................... 84
Security ....................................... 84
Moreinformation ................................... 84
6Printservices.......................... 85
MicrosoftPrintManagementConsole............................. 85
NeworimprovedHPprintserverfeatures........................... 86
HPStorageServerManagementConsole......................... 86
HPWebJetadmin................................... 86
HPInstallNetworkPrinterWizard ............................ 86
HPDownloadManagerforJetdirectPrintDevices...................... 86
MicrosoftPrintMigratorUtility.............................. 87
Networkprinterdrivers................................. 87
Printservicesmanagement ................................. 87
MicrosoftPrintManagementConsole........................... 87
HPWebJetadmininstallation .............................. 88
Web-basedprintermanagementandInternetprinting.................... 89
Managingprintingfromthecommandline ........................ 90
Planningconsiderationsforprintservices ......................... 91
Printqueuecreation .................................. 91
Sustainingprintadministrationtasks ............................. 92
Maintenance updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Systemupdates .................................. 92
Printdrivers.................................... 93
User-modevs.kernel-modedrivers.......................... 93
HPProLiantDL100G2StorageServeradministrationguide 5

Kernel-modedriverinstallationblockedbydefault.................... 93
HP Jetdirect firmware................................ 93
Printerserverscalabilityandsizing............................ 94
Backup........................................ 94
Antivirus ....................................... 95
Security ....................................... 95
Bestpractices....................................... 95
Troubleshooting...................................... 96
Additionalreferencesforprintservices ............................ 96
7Othernetworkfileandprintservices................ 97
New or improved fileorprintservicesforothernetworks .................... 97
MicrosoftServicesforNetworkFileSystem(MSNFS) .................... 97
UNIXIdentityManagement............................... 97
Other network fileandprintservices ............................. 98
MicrosoftServicesforNetworkFileSystem......................... 98
FileservicesforMSNFS............................... 98
MSNFScomponents................................ 99
AdministeringMSNFS ............................... 99
ServerforNFS .................................. 100
UserNameMapping ............................... 104
Test an NFS file share configuration ......................... 105
MicrosoftServicesforNFStroubleshooting....................... 106
MicrosoftServicesforNFScommand-linetools..................... 106
OptimizingServerforNFSperformance........................ 106
PrintservicesforUNIX ............................... 107
FileandPrintServicesforNetWare(FPNW)........................ 107
InstallingServicesforNetWare ........................... 108
ManagingFileandPrintServicesforNetWare..................... 109
CreatingandmanagingNetWareusers........................ 110
ManagingNCPvolumes(shares) .......................... 112
PrintServicesforNetWare ............................. 114
AppleTalk and fileservicesforMacintosh ......................... 115
InstallingtheAppleTalkprotocol........................... 115
InstallingFileServicesforMacintosh ......................... 116
CompletingsetupofAppleTalkprotocolandshares................... 116
PrintservicesforMacintosh ............................. 116
InstallingPrintServicesforMacintosh......................... 116
PointandPrintfromMacintoshtoWindowsServer2003 ................ 116
8Troubleshooting,servicing,andmaintenance ............ 117
Troubleshootingthestorageserver.............................. 117
Operatingsystemproblemsandresolutions ........................ 117
Applicationsoftwareproblems.............................. 117
Customerselfrepair .................................. 118
Troubleshootingresources................................ 118
HPwebsite.................................... 118
Serverdocumentation ............................... 118
Subscriber’sChoice ................................ 118
Whitepapers................................... 118
Firmware updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Maintenanceandservice.................................. 119
Chassiscovers .................................... 119
Fronttopcover .................................. 119
Reartopcover .................................. 121
Backplanebattery................................... 122
Systemmemory .................................... 123
Powersupply ..................................... 125
Systemfans...................................... 127
6

Harddiskdrives.................................... 129
RAIDcontrollercard.................................. 130
DVD-ROMdrive.................................... 131
CertificateofAuthenticity.................................. 133
9Systeminstallationandrecovery.................. 135
TheInstallationandRecoveryDVD.............................. 135
Torestoreafactoryimage ................................. 135
SystemswithaDON’TERASEpartition............................ 136
Managingdisksafterarestoration.............................. 136
ANICteaming.......................... 137
BroadcomNICteaming .................................. 137
Configuringteaming.................................. 138
Typesofloadbalanceteams .............................. 138
SmartLoadBalancingandFailover.......................... 138
LinkAggregation(802.3ad)............................. 138
GenericTrunking(FEC/GEC)/802.3ad-DraftStatic................... 138
SLB(Auto-FallbackDisable) ............................. 138
Creatingateam.................................... 139
Teamingguidelines ................................ 139
Configuring the team IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
AddingaVLAN.................................... 140
BRegulatorycomplianceandsafety................. 141
FederalCommunicationsCommissionnotice.......................... 141
ClassAequipment................................... 141
ClassBequipment................................... 141
Declaration of conformity for products marked with the FCC logo, United States only . . . . . . . 141
Modifications..................................... 142
Cables........................................ 142
Lasercompliance ..................................... 142
Internationalnoticesandstatements ............................. 143
Canadiannotice(AvisCanadien) ............................ 143
ClassAequipment................................. 143
ClassBequipment................................. 143
EuropeanUnionnotice................................. 143
BSMInotice...................................... 143
Japanesenotice.................................... 144
KoreannoticeA&B................................... 144
ClassAequipment................................. 144
ClassBequipment................................. 144
Safety .......................................... 144
Batteryreplacementnotice ............................... 144
Taiwanbatteryrecyclingnotice ............................. 145
Powercords...................................... 145
Japanesepowercordnotice............................... 145
Electrostaticdischarge ................................. 145
Preventingelectrostaticdischarge .......................... 145
Groundingmethods ................................ 145
Waste Electrical and Electronic Equipment (WEEE) directive . . . . . . . . . . . . . . . . . . . 146
Czechoslovakiannotice................................. 146
Danishnotice..................................... 146
Dutchnotice ..................................... 146
Englishnotice..................................... 147
Estoniannotice .................................... 147
Finnishnotice..................................... 147
Frenchnotice ..................................... 147
HPProLiantDL100G2StorageServeradministrationguide 7

Germannotice .................................... 148
Greeknotice ..................................... 148
Hungariannotice ................................... 148
Italiannotice ..................................... 148
Latviannotice..................................... 149
Lithuaniannotice ................................... 149
Polishnotice ..................................... 149
Portuguesenotice ................................... 149
Slovakiannotice.................................... 150
Sloveniannotice.................................... 150
Spanishnotice .................................... 150
Swedishnotice .................................... 150
Index .............................. 153
8

Figures
1Tieredstorage ................................... 21
2DL100G2frontview ................................ 27
3Rearpanelcomponents ............................... 28
4Serverchassislayout ................................ 29
5DL100G2two-HDDsoftwareRAID .......................... 33
6DL100G24–HDDhardwareRAID .......................... 34
7HPStorageServerManagementConsole........................ 35
8Storagemanagementprocessexample......................... 40
9Configuringarraysfromphysicaldrives ........................ 41
10RAID0(datastriping)(S1-S4)ofdatablocks(B1-B12) ................. 41
11 Two arrays (A1, A2) and five logical drives (L1 through L5) spread over five physical drives . . 43
12HPStorageServerManagementConsole,DFSManagement............... 48
13DiskManagementutility .............................. 54
14ExpandingaLUN(SmartArrayonly)......................... 60
15SystemadministratorviewofShadowCopiesforSharedFolders ............. 66
16Shadowcopiesstoredonasourcevolume ...................... 66
17Shadowcopiesstoredonaseparatevolume...................... 67
18AccessingshadowcopiesfromMyComputer ..................... 69
19ClientGUI .................................... 70
20 Recovering a deleted fileorfolder .......................... 72
21Propertiesdialogbox,Securitytab.......................... 75
22AdvancedSecuritysettingsdialogbox,Permissionstab ................. 76
23UserorgroupPermissionEntrydialogbox....................... 77
24AdvancedSecuritySettingsdialogbox,Auditingtab .................. 77
25SelectUserorGroupdialogbox........................... 78
26AuditingEntrydialogboxforfoldernameNTFSTest .................. 78
27AdvancedSecuritySettingsdialogbox,Ownertab................... 79
28HPStorageServerManagementConsole,FSRMtasks.................. 81
29 Stand-alone print servers or print appliances with network-attached printers . . . . . . . . . 85
30HPFilePrintApplianceManagementConsole..................... 86
31HelpandSupportCenterpage ........................... 87
32MicrosoftPrintManagementConsole......................... 88
33HPWebJetadmin................................. 89
34INPWscreen................................... 92
35HPDownloadManagerforJetdirect ......................... 94
36MicrosoftPrinterMigratorscreen........................... 95
37MicrosoftServicesforNFSscreen .......................... 99
38AccessingMSNFSfromHPStorageServerManagementconsole............. 100
39LocalAreaConnectionPropertiespage,Installoption.................. 108
40InstallingFileandPrintServicesforNetWare ..................... 109
41FileandPrintServicesforNetWaredialogbox .................... 110
42NewUserdialogbox ............................... 111
43NetWareServicestab ............................... 112
44CreateVolumedialogbox ............................. 113
45AccessThroughSharePermissionsdialogbox ..................... 113
46AddUsersandGroupsdialogbox.......................... 114
47LocalAreaConnectionPropertiespage,Installoption.................. 115
48Loosenfronttopcoverscrews ............................ 119
49Slidingofffronttopcover.............................. 120
50Slidingonfronttopcover.............................. 120
51Tightenfronttopcoverscrews............................ 121
52Removingreartopcover .............................. 121
53Slidingonreartopcover.............................. 121
54Tightenreartopcoverscrew............................. 122
HPProLiantDL100G2StorageServeradministrationguide 9

55Backplanebatterylocation ............................. 122
56Removingbackplanebattery ............................ 122
57Installingbackplanebattery............................. 123
58LocationofDIMMsockets.............................. 123
59DIMMmap.................................... 124
60RemovingaDIMM................................. 124
61Unlockretainingclips ............................... 125
62InsertingDIMMintosocket ............................. 125
63Locationofpowersupply.............................. 126
64Powersupplycables................................ 126
65Removingpowersupplyscrews ........................... 127
66Liftingoutpowersupply .............................. 127
67Locationofsystemfans............................... 128
68Systemfancables................................. 128
69Liftingoutfan................................... 128
70LocationofHDDs ................................. 129
71ReleasingHDDlever................................ 129
72SlidingHDDfrombay ............................... 130
73RemovingHDDfromtray .............................. 130
74Removingrisercardassembly............................ 131
75Removingcontrollercardfromrisercardassembly ................... 131
76LocationoftheDVD-ROMdrive ........................... 132
77RemovingDVD-ROMscrews............................. 132
78LiftingoutDVD-ROMdrive ............................. 132
79RemovingDVD-ROMdaughtercard ......................... 133
80SystemInstallationandRecoverywindow....................... 135
81BASC2screen................................... 137
10

Tables
1Documentconventions................................ 14
2Componentcomparisonbetweeneditions ....................... 23
3Frontpanelcontrolsandindicators .......................... 28
4DL100G2storageserverfeaturedifferences ...................... 30
5 Commonality between DL100 G2storage server configurations .............. 32
6 DL100 G2 two-HDD configuration........................... 33
7 DL100 G2 four-HDD configurations.......................... 34
8SummaryofRAIDmethods.............................. 42
9 Tasks and utilities needed for storage server configuration................. 50
10 Common DiskPart commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11Authenticationtable ................................ 101
12MSNFScommand-lineadministrationtools ...................... 106
13Operatingsystemproblems............................. 117
14DIMMplacementbasedonquantity ......................... 124
HPProLiantDL100G2StorageServeradministrationguide 11

12

About this guide
This guide provides information for operating the following HP ProLiant Storage Server models:
•HP ProLiant DL100 G2 320 GB Storage Server
•HP ProLiant DL100 G2 640 GB Storage Server
•HPProLiantDL100G21TBDualCoreStorageServer
•HP ProLiant DL100 G2 1 TB External SATA Enclosure
•HPProLiantDL100G22TBDualCoreStorageServer
•HP ProLiant DL100 G2 Print Storage Server (320 GB)
•HP ProLiant DL100 G2 Print Storage Server (640 GB)
ThisguideisavailableontheHPwebsiteandisalsoprovidedasaPDFprintabledocumentonthe
HP ProLiant Storage Server documentation CD.
Intended audience
This book is intended for use by technical professionals who are experienced with the following:
•Microsoft®administrative procedures
•System and storage configurations
Related documentation
In addition to this guide, the following is additional information related to these products:
•HP ProLiant Storage Server installation guide
•HP ProLiant Storage Server 1U rack installation instructions
•HP ProLiant Storage Server release notes
These documents can be obtained at http://h18006.www1.hp.com/storage/nas.html.Selectyour
product, then click Technical documentation under the Support section.
Document conventions and symbols
This document contains the following conventions and symbols:
• Document conventions
•Textsym
bols
• Equipment symbols
HPProLiantDL100G2StorageServeradministrationguide 13

Document conventions
Table 1 Document conventions
Convention Element
Medium blue text Cross-reference links and e-mail addresses
Medium blue, underlined text
(http://www.hp.com)Web site addresses
Bold font •Key names
•Text typed into a GUI element, such as into a box
•GUI elements that are clicked or selected, such as menu and list
items, buttons, and check boxes
Italic font Text emphasis
Monospace font •File and directory names
•System output
•Code
•Text typed at the command line
Monospace, italic font •Code variables
•Command-line variables
Monospace, bold font Emphasis of file and directory names, system output, code, and text
typed at the command line
Text symbols
WARNING!
Indicates that failure to follow directions could result in bodily harm or death.
CAUTION:
Indicates that failure to follow directions could result in damage to equipment or data.
IMPORTANT:
Provides clarifying information or specific instructions.
NOTE:
Provides additional information.
TIP:
Provides helpful hints and shortcuts.
Equipment symbols
The following equipment symbols might be found on hardware for which this guide pertains.
14 About this guide

WARNING!
Any enclosed surface or area of the equipment marked with these symbols indicates the presence
of electrical shock hazards. Enclosed area contains no operator serviceable parts.
WARNING: To reduce the
risk of personal injury from electrical shock hazards, do not open this enclosure.
WARNING!
Any RJ-45 receptacle marked with these symbols indicates a network interface connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telephone or
telecommunications connectors into this receptacle.
WARNING!
Any surface or area of the equipment marked with these symbols indicates the presence of a hot
surface or hot component. Contact with this surface could result in injury.
WARNING: To reduce the risk of
personal injury from a hot component, allow the surface to cool before touching.
WARNING!
Power supplies or systems marked with these symbols indicate the presence of multiple sources
of power.
WARNING: To reduce the risk of personal injury from electrical shock, remove all power cords to
completely disconnect power from the power supplies and systems.
WARNING!
Any product or assembly marked with these symbols indicates that the component exceeds the
recommended weight for one individual to handle safely.
WARNING: To reduce the risk of personal injury or
damage to the equipment, observe local occupational health and safety requirements and guidelines for
manually handling material.
Equipment symbols
The following equipment symbols might be found on hardware for which this guide pertains.
WARNING!
Any enclosed surface or area of the equipment marked with these symbols indicates the presence
of electrical shock hazards. Enclosed area contains no operator serviceable parts.
WARNING: To reduce the
risk of personal injury from electrical shock hazards, do not open this enclosure.
WARNING!
Any RJ-45 receptacle marked with these symbols indicates a network interface connection.
WARNING: To reduce the risk of electrical shock, fire, or damage to the equipment, do not plug telephone or
telecommunications connectors into this receptacle.
HPProLiantDL100G2StorageServeradministrationguide 15

WARNING!
Any surface or area of the equipment marked with these symbols indicates the presence of a hot
surface or hot component. Contact with this surface could result in injury.
WARNING: To reduce the risk of
personal injury from a hot component, allow the surface to cool before touching.
WARNING!
Power supplies or systems marked with these symbols indicate the presence of multiple sources
of power.
WARNING: To reduce the risk of personal injury from electrical shock, remove all power cords to
completely disconnect power from the power supplies and systems.
WARNING!
Any product or assembly marked with these symbols indicates that the component exceeds the
recommended weight for one individual to handle safely.
WARNING: To reduce the risk of personal injury or
damage to the equipment, observe local occupational health and safety requirements and guidelines for
manually handling material.
Getting help
If you still have a question after reading this guide, contact an HP authorized service provider or access
our web site: http://www.hp.com.
NOTE:
Known issues and workarounds for the storage server products and the service release are addressed in
release notes. To view the latest version, visit http://www.hp.com/go/support.SelectSee support and
troubleshooting information and enter a product name/number. Under self-help resources, select the
manuals (guides, supplements, addendums, etc) link.
HP technical support
Telephone numbers for worldwide technical support are listed on the HP support web site:
http://www.hp.com/support/.
Collect the following information before calling:
•Technical support registration number (if applicable)
•Product serial numbers
•Product model names and numbers
•Applicable error messages
•Operating system type and revision level
•Detailed, specificquestions
For continuous quality improvement, calls may be recorded or monitored.
HP Subscriber’s Choice
HP strongly recommends that customers sign up online using the Subscriber’s choice web site at
http://www.hp.com/go/e-updates.
16 About this guide

•Subscribing to this service provides you with e-mail updates on the latest product enhancements,
newest versions of drivers, and firmware documentation updates, as well as instant access to
numerous other product resources.
•After signing up, you can quickly locate your products by selecting Business support, and then
Storage under Product Category.
HP-authorized reseller
For the name of your nearest HP-authorized reseller:
•In the United States, call 1-800-282-6672.
•Elsewhere, visit the HP web site: http://www.hp.com.Then,clickContact HP to find locations
and telephone numbers.
Helpful web sites
For other product information, see the following HP web sites:
•h
ttp://www.hp.com
•http://www.hp.com/go/storage
•http://www.hp.com/support/
•http://www.docs.hp.com
•http://www.microsoft.com
HPProLiantDL100G2StorageServeradministrationguide 17

18 About this guide

1TheHPstorageserversolution
This chapter introduces some storage technology and describes the hardware and software that comprise
an HP ProLiant Storage Server and compares the major features of the models.
The HP ProLiant Storage Server products can be used in many types of computing environments, from
basic Microsoft®Windows®workgroups to complicated multiprotocol domains using Distributed File
System (DFS), Network File System (NFS), File Transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP),
and Microsoft Server Message Block (SMB). The corresponding varieties of clients that can be serviced
include any Windows, UNIX®,Linux,Novell,orMacintoshvariant.
The HP ProLiant Storage Server family of products includes enterprise class, as well as remote office or
small to medium business class solutions that provide reliable performance, manageability, and fault
tolerance. Each HP ProLiant Storage Server has been specifically designed to function as a network
attached storage server. Refer to the HP ProLiant Storage Server QuickSpecs (available on the HP web
site http://www.hp.com/go/storage) for a list of server hardware and software features. Click NAS,
select a storage server, and then select a link for the QuickSpecs.
Server identification
The model identifiers of ProLiant Storage Servers have a prefix of DL or ML. DL is the optimized density
line, and is mounted into a rack. ML is the maximized configuration line, and considered to be a
desktop server. The number following the prefix increases with the amount of features and capability. For
example, the 100 series generally has fewer features than the 300 or 500 series storage servers. Each
major revision to the server is designated by a generation (G) designation. For example the DL100 G2 is
arack-m
ounted, second-generation, 100-series server.
The storage environment
Servers play an important role in the storage environment. They can connect into a storage area network
(SAN) infrastructure with cabling, hardware, and software, to manage the data flows moving in and out.
This section describes some of the technology involved in the storage environment.
SAN
ASANi
s a specialized, dedicated high-speed network. Servers and storage devices may attach to the
SAN. It is sometimes called “the network behind servers.” Like a local area network (LAN), a SAN
allows an “any to any” connection across the network using interconnect elements such as routers,
gateways, hubs, and switches. Fibre Channel is the standard SAN networking architecture, although
other network standards could be used. A decision to implement a SAN is usually a decision to develop
a new storage network infrastructure.
NAS
Storage devices which optimize the concept of filesharingacrossthenetworkhavecometobeknown
as network attached storage (NAS). NAS solutions use the mature TCP/IP network technology of the
Ethernet LAN. Data is sent to and from NAS devices over the LAN using the TCP/IP protocol. By making
storage devices LAN addressable, the storage is freed from its direct attachment to a specificserver,and
any-to-any connectivity is facilitated using the LAN fabric.
In principle, any user running any operating system can access files on the remote storage device. This
is done by means of a common network access protocol. In addition, a task, such as backup to tape,
can be performed across the LAN using specialized software, enabling sharing of expensive hardware
resources, such as automated tape libraries, between multiple servers.
HPProLiantDL100G2StorageServeradministrationguide 19

Fibre Channel technology
Fibre Channel technology provides low latency and high throughput capabilities. It uses either a serial
copper or fiber optic link to connect the server with storage devices. Fiber optic technology allows for
storagetobel
ocated a maximum distance of up to 10 kilometers away from the attaching server. The
significant advantage of Fibre Channel is its ability to connect redundant paths between storage and
servers. In addition, Fibre Channel offers improved scalability due to several connection topologies.
Basic point-to-point connections and loop and switch are topologies that add to the flexibility of server
and storage connections. For many enterprise environments, Fibre Channel is the technology serving
high-performance and mission-critical applications.
Serial ATA technology
Serial Advanced Technology Attachment (SATA) offers increased data rate performance over its parallel
equivalent, EIDE, or also known as ATA. SATA transmits its signals serially compared to the multiple
streams found in parallel technology. It moves data faster than parallel technology because it is not tied to
a particular clock speed. Besides improving performance, it was designed to overcome the master/slave
configuration and maximum cable length limitations of parallel ATA technologies, while maintaining cost
efficiency. SATA allows for hot-swappable drives, lowering system down time risks. SATA is an ideal
solution for secondary storage in networked storage environments. It is not an appropriate solution
for storage environments serving enterprise applications requiring high performance, mission-critical,
and production environments.
Serial ATA versus SCSI and Fibre Channel disks
SCSI disk technology is the right choice for entry-level networked storage, as it offers the same advantages
that Fibre Channel disks provide for large enterprise disk arrays. In addition, it offers a simple migration
path from servers to SAN called direct attached storage (DAS) to SAN. The introduction of Serial ATA
technology offers a new way of storing data. Derived from the storage used in desktop PCs, its cheaper
components provide a much lower cost per megabyte than SCSI or Fibre Channel disks. However, as
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sequence, its levels of performance and reliability are also lower. That said, Serial ATA is not
intended as a replacement technology. SCSI and Fibre Channel remain better choices for reliable,
high-performance application serving and storage. However, if you want cost-effective storage for
infrequently accessed data—such as data repositories or reference information—then Serial ATA is
a good choice.
Tiered storage environments
In a tiered storage environment, you can match your data to storage that has an appropriate level of
performance and availability—giving you a lower cost of ownership without any negative impact on your
business. Here’s how it could work in a typical disk-to-disk-to-tape environment:
•Data with the highest requirements is stored in the first tier, on the SCSI or Fibre Channel disks.
•The second tier stores near-online or infrequently accessed data (such as disk-to-disk backup
copies) on Serial ATA disks.
•The third tier comprises tape-based backup copies or data archived on optical media.
20 The HP storage server solution