Dell PowerVault DR6000 Manuel d'utilisateur Page 133
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• File write locks across clients
Rapid NFS starts accelerating only after 8 MB is sequentially written to files (tunable in 4 MB
multiples). You can configure the file MIME types to go through acceleration in rdnfs.cfg; for
details, see Viewing the Rapid NFS and Rapid CIFS Logs.
NOTE: If the client and server do not have the same times, the times seen will not match
typical NFS behavior due to the nature of file system in user space (FUSE).
Best Practices: Rapid CIFS
This topic introduces some recommended best practices for using Rapid CIFS operations with the DR Series system.
Containers must
be of type NFS/
CIFS
RDA containers cannot use Rapid CIFS. If you have existing NFS/CIFS containers, you do not
need to create new containers to use Rapid CIFS; you can install the plug-in (driver) to existing
clients.
The Rapid CIFS
plug-in (driver)
must be installed
on client systems
After the plug-in is installed, write operations will go through Rapid CIFS while metadata
operations such as file creates and permission changes will go through the standard CIFS
protocol. Rapid CIFS can be disabled by uninstalling the plug-in.
Your DR Series
system must
meet the
minimum
configuration
Rapid CIFS is only available with a DR6000 system and a client with a minimum of 4 CPU cores
running at a minimum of 4 GHz cumulative processing power and 2 GB memory. For a list of
supported operating systems, see the
Dell DR Series System Interoperability Guide
.
If you update your operating system, you must update your Rapid CIFS plug-in as well. Updates
are available on the Support site as well as within the GUI on the Clients page.
Rapid CIFS is
stateful
If the DR Series system goes down, the connection will terminate. DMAs will restart from the
last checkpoint.
Rapid CIFS and
passthrough
mode
If Rapid CIFS mode fails for any reason, the DR Series system falls back to regular CIFS mode
automatically. For details, see Monitoring Performance.
Rapid CIFS
acceleration
constraints
Rapid CIFS does not support:
• NAS functionality
– Optlocks (but supported if a single client is writing)
– Byte-range locks
• Optimization of very small files (less than 10 MB). File size can be adjusted using
configuration settings.
• FILE_NO_IMMEDIATE_BUFFERING and FILEWRITE_THROUGH operations (sent via CIFS
only).
• File path size greater than 4096 characters
Rapid CIFS starts accelerating only after 10 MB is sequentially written to files (tunable in 5MB
multiples). You can configure the file MIME types to go through acceleration in rdcifs.cfg.
133
- Dell DR Series System 1
- Administrator Guide 1
- Notes, Cautions, and Warnings 2
- Contents 3
- Source Code Availability 11
- About the DR Series System 13
- Internal Drive Capacity 14
- External Drive Capacity 14
- Streams vs. Connections 19
- Replication 19
- Replication Seeding 20
- Reverse Replication 20
- CIFS ACL Support 22
- Unix Permissions Guidelines 23
- Rapid NFS and Rapid CIFS 24
- DR Series Expansion Shelf 27
- Not Configured 31
- Dell DR2000v Deployment Guide 33
- Local Console Connection 36
- (iDRAC6) User Guide 40
- Dashboard Page and Options 44
- Displaying System Alerts 45
- Health Page: DR4000 System 46
- Health Page: DR4100 System 47
- Health Page: DR6000 System 47
- DR Series System Components 47
- DR Series System Enclosures 48
- Viewing the Latest Range 49
- Viewing a Specific Time Range 50
- System Usage 50
- Container Statistics 50
- Backup Data Pane 51
- Throughput Pane 51
- Replication Pane 51
- Replication Status Pane 52
- Duplication Statistics 53
- Client Statistics 53
- Replication Statistics Page 54
- Storage Page and Options 55
- Containers 56
- Replication Page 57
- Setting a Cleaner Schedule 60
- Networking 61
- Active Directory 61
- Local Workgroup Users 61
- Email Alerts 62
- Admin Contact Info 62
- Password 62
- Email Relay Host 62
- Support Page and Options 63
- Diagnostics 64
- Software Upgrade 65
- Expansion Shelf Licenses 65
- Licenses 66
- Modifying the System Password 71
- Sending a Test Message 75
- Managing Passwords 77
- Adding an Email Relay Host 78
- Editing an Email Relay Host 78
- Creating Containers 80
- Managing Container Operations 83
- Command Line Reference Guide 85
- Editing Container Settings 87
- Deleting Containers 88
- Moving Data Into a Container 89
- System Status Bar 97
- System Information Pane 98
- Monitoring System Alerts 99
- Monitoring System Events 100
- Using the Event Filter 101
- Monitoring System Health 102
- Monitoring System Usage 105
- Setting a Time Range Value 106
- Using Global View 111
- About the Global View Page 113
- Global View Summary 114
- Appliance List 115
- Navigating in Global View 116
- Using the Reconnect Report 118
- Support Information Pane 119
- Diagnostics Page and Options 119
- SSL Page and Options 124
- Generating a CSR 125
- Restore Manager (RM) 126
- Dell DR 127
- DR Series System NVRAM 129
- Interoperability Guide 131
- Best Practices: Rapid NFS 132
- Best Practices: Rapid CIFS 133
- Monitoring Performance 136
- Overview 138
- Guidelines 139
- Adding RDS Devices in NVBU 140
- Understanding RDA with OST 145
- Terminology 146
- Configuring an LSU 147
- Dell DR Series 148
- System Interoperability Guide 148
- servername 153
- Creating Disk Pools From LSUs 154
- Modifying Log Rotation Size 160
- Reference Guide 171
- About the Diagnostics Service 182
- Creating a Cleaner Schedule 185
- Displaying Cleaner Statistics 186
- TCP 801 NFS status daemon 189
- Getting Help 190
- Contacting Dell 191
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