Home » Lacie Manuals » Computer Software » Lacie 131018 » Manual Viewer

Lacie 131018 User Manual - Page 142

StorView Performance Optimization, Time Out Issues - drivers

UPC - 093053789114

Add to My Manuals
Save this manual to your list of manuals

Page 142 highlights

StorView RAID Module During normal operations, the StorView server(s) send "check-in" packets every 10 seconds. If three consecutive check-in packets for a specific StorView server are not received, its devices are flagged and the StorView server with the lowest serial number or address will take control of those devices. 12.3 StorView Performance Optimization There are some parameters that can be adjusted on the host HBA and operating system to increase the performance of StorView. They are HBA Execution Throttle setting and the operating system's Scatter/ Gather registry setting. 12.3.1 Execution Throttle To improve general I/O performance by allowing more commands on the fibre bus or the SCSI bus, we recommend changing your host bus adapter's execution throttle parameter to 256. Refer to your host HBA documentation for more information. 12.3.2 Scatter/Gather (Microsoft Windows Only) To increase general I/O performance by allowing larger data transfers we recommend editing the "MaximumSGList" parameter in the registry. The recommended hexadecimal value is "ff." The path is: HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services// Parameters/Device/ Refer to your Microsoft Windows operating system documentation for more information on editing the registry and your host HBA adapter documentation. 12.4 Time Out Issues In many cases to resolve long time out issues, you will need to make adjustments to the SCSI time out registry values. For the most general cases a timeout value between 60 and 120 seconds should be fine, however in more heavier workload cases a higher value 240 seconds should be set. For Windows platforms, the default is 60 seconds: HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Disk/TimeOutValue For Linux platforms the default is: 2.6 Kernel = 30 seconds 2.4 Kernel = 60 seconds 134

Section	Page
Introduction	9
1.1 Overview	9
1.2 Inter-Server Communication	9
1.2.1 Multicast	9
1.3 License Manager	10
1.3.1 Access License Limits	10
1.3.2 Feature License	11
StorView Quick Tour	13
2.1 The Work Area	13
2.1.1 Tool Bar	14
2.1.2 Enclosure Section	15
2.1.3 Array and Logical Drive Section	23
2.1.4 Server Sidebar and Top Section	25
2.2 How to Use this Document	27
Embedded StorView Setup	29
3.1 Embedded Network Settings	29
3.1.1 Configuring Network Settings via the Wizard	29
3.1.2 Configuring Network Settings via the CLI	32
3.1.3 Configuring Network Settings within StorView	32
3.1.4 Getting a New IP Address	33
Getting Started	35
4.1 Starting StorView	35
4.2 Upgrading the Access License	35
4.3 E-MAIL	37
4.3.1 Configuring E-Mail Notices	37
4.3.2 Deleting an E-Mail Addressee	38
4.4 SNMP	39
4.4.1 Configuring SNMP Traps	39
4.4.2 Deleting an SNMP Server	40
4.5 SYSLOG	41
4.5.1 Gathering Logs	41
4.5.2 SYSLOG Daemon	41
4.5.3 Operational View	42
4.5.4 Configuring SYSLOG	42
4.5.5 Delete a SYSLOG Server	43
4.6 Changing the Password	44
4.7 Monitoring Settings	45
4.7.1 Additional Monitoring Servers	46
4.7.2 Remove Monitored StorView Server IP	46
Storage Assistant	47
5.1 Assisted Automatic Configuration	47
Configuring a Storage Solution	53
6.1 Creating Disk Arrays	53
6.1.1 RAID Levels	53
6.1.2 Terminology	54
6.1.3 Optimization and Drive Selection for RAID 5 and 6	56
6.2 Create the Array	56
6.2.1 Configuring Array Writeback Cache	62
6.3 Initializing the Array	63
6.3.1 Pause/Resume the Initialization	64
6.4 Adding Hot Spare Drives	65
6.4.1 Assigning a Global Spare	65
6.4.2 Assigning a Dedicated Spare	66
6.4.3 Removing a Spare	68
6.4.4 Auto Spare	69
6.5 Create the Logical Drive	70
6.6 Saving the Configuration	73
6.6.1 Saving the Configuration	73
SAN LUN Mapping	77
7.1 Overview	77
7.2 Terminology	77
7.3 Accessing SAN LUN Mapping	78
7.4 Overview: SAN LUN Mapping Window	80
7.4.1 HBA Ports Name Section	80
7.4.2 ADD NEW MAP Section	81
7.4.3 SELECTED HOST HBA PORT CONNECTION Section	81
7.5 Creating a SAN LUN Mapping	82
7.6 Deleting a SAN LUN Mapping	85
7.7 Modifying a SAN LUN Mapping	86
Controller Environmentals	89
8.1 Overview	89
8.2 Controller Environmentals	89
8.2.1 Status	91
8.2.2 Hardware/Firmware	91
8.2.3 Configuration	91
8.2.4 Operations	91
Controller Advanced Settings	99
9.1 Overview	99
9.2 Advanced Settings	99
9.2.1 Identity	100
9.2.2 Fault Tolerance	102
9.2.3 Host Ports	104
Managing the Storage Solution	107
10.1 Overview	107
10.2 Advanced Array Functions	108
10.2.1 Deleting an Array	108
10.2.2 Modifying Arrays	109
10.2.3 Verify Parity	109
10.2.4 Identifying Drive Members	112
10.2.5 Rebuilding an Array	113
10.2.6 Expanding an Array	114
10.2.7 Trust an Array	116
10.3 Restoring and Clearing the Configuration	117
10.3.1 Restoring the Configuration	117
10.3.2 Clearing the Configuration	118
10.4 Advanced Drive Options	121
10.4.1 Accessing the Drive Information Window	121
10.4.2 Locate Drive	122
10.5 Advanced Logical Drive Functions	123
10.5.1 Viewing Unassigned Free Space	123
10.5.2 Expanding a Logical Drive	123
10.5.3 Deleting a Logical Drive	125
Using Snapshot	127
11.1 Introduction	127
11.2 Enabling Snapshot	127
11.3 Taking a Snapshot	130
11.4 Mapping a Snapshot	133
11.5 Deleting a Snapshot	135
11.6 Performing a Snapback	137
11.7 Disabling Snapshot	139
Failover, Performance and Additional Functions	141
12.1 Overview	141
12.2 How StorView Server Failover Works	141
12.3 StorView Performance Optimization	142
12.3.1 Execution Throttle	142
12.3.2 Scatter/Gather	142
12.4 Time Out Issues	142
12.5 Additional StorView Functions	143
12.5.1 About	143
12.5.2 Take Control Monitoring	144
12.5.3 Rescan	145
12.5.4 Alarm Mute and Enable/Disable	146
Support and Updates	147
13.1 Tech Support	147
13.2 Updating Embedded StorView	149
Event Logs	151
14.1 Overview	151
14.2 Accessing and Navigating the StorView Event Log	153
14.3 Exporting the StorView Event Log	154
14.4 Clearing the StorView Event Log	157
14.5 Operating System Event Log	158
14.6 List of Events	159
14.6.1 Controller Events	159
14.6.2 Expansion Module Events	165
14.6.3 Alarm Events	166
14.6.4 Drive and Array Events	167
14.6.5 Controller Port Events	172
14.6.6 Enclosure Events	174
14.6.7 StorView Server Events	177
14.6.8 SnapShot Events	181
14.7 Failed Drives Codes	183
14.8 SAS Fatal Error Codes	183
Statistics	185
15.1 Overview	185
15.2 Access Statistics	186
15.3 Command Size - Alignment Statistics	187
15.4 Read-Ahead Statistics	189
15.5 Command Cluster Statistics	191
A.1 Introduction	193
A.2 Sequential Access	194
A.2.1 Number of Outstanding Commands	194
A.3 Access Size	194
A.3.1 Access Alignment	194
A.4 Sub-Array	195
A.5 Multiple Drive Failures	196
A.5.1 Faster Rebuild	196
A.6 Summary	196
B.1 Problems You May Encounter	197
C.1 Overview	203
C.1.1 Terminology	203
C.2 Overwrite Data Area	204
C.3 Overwrite Data Area Location	205
C.4 Selecting the ODA Stripe Size	205
C.5 Overwrite Data Area Storage Capacity	205
C.6 ODA Assignment	206
C.7 Snapshots and Caching	206
C.7.1 Application Caches	206
C.7.2 Operating System Cache	207
C.7.3 RAID Controller Cache	207
C.8 Virtual LUNs	207

Match case Limit results 1 per page

StorView RAID Module

134

During normal operations, the StorView server(s) send “check-in” packets every 10 seconds. If three

consecutive check-in packets for a specific StorView server are not received, its devices are flagged and

the StorView server with the lowest serial number or address will take control of those devices.

12.3

StorView Performance Optimization

There are some parameters that can be adjusted on the host HBA and operating system to increase the

performance of StorView. They are HBA Execution Throttle setting and the operating system’s Scatter/

Gather registry setting.

12.3.1

Execution Throttle

To improve general I/O performance by allowing more commands on the fibre bus or the SCSI bus, we

recommend changing your host bus adapter’s execution throttle parameter to 256. Refer to your host

HBA documentation for more information.

12.3.2

Scatter/Gather

(Microsoft Windows Only) To increase general I/O performance by allowing larger data transfers we

recommend editing the “MaximumSGList” parameter in the registry. The recommended hexadecimal

value is “ff.” The path is:

HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/<name of HBA driver>/

Parameters/Device/

Refer to your Microsoft Windows operating system documentation for more information on editing the

registry and your host HBA adapter documentation.

12.4

Time Out Issues

In many cases to resolve long time out issues, you will need to make adjustments to the SCSI time out

registry values. For the most general cases a timeout value between 60 and 120 seconds should be fine,

however in more heavier workload cases a higher value 240 seconds should be set. For Windows

platforms, the default is 60 seconds:

HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Disk/TimeOutValue

For Linux platforms the default is:

2.6 Kernel = 30 seconds

2.4 Kernel = 60 seconds