Data ONTAP 7.3 Storage Management

Managing quotas | 301

Note: Quotas are not affected for any volume other than the volume specified in the quota on
command.

Related concepts
About activating or reinitializing quotas on page 285
About modifying quotas on page 286
About quotas on page 265

Deactivating quotas

You use the quota off command to deactivate quotas for a specific volume.

About this task
If a quota initialization is almost complete, the quota off command can fail. If this happens, retry
the command after a minute or two.

Canceling quota initialization

If you started a quota initialization and you now want to cancel it, you can use the quota off command.

About this task
If a quota initialization is almost complete, the quota off command can fail. If this happens, the
quota on command should finish shortly.

Resizing quotas

You use the quota resize command to cause Data ONTAP to reread the quotas file for the specified
volume. Resizing only works for certain types of changes to the quotas file. For other changes, you
need to reinitialize quotas.

Related concepts
When you can use resizing on page 286
About quotas on page 265

302 | Data ONTAP 7.3 Storage Management Guide

Deleting quotas

You can remove quota restrictions for a quota target in two ways: by changing the quotas file entry so
that there is no restriction on resource use for that quota target, or by deleting the quotas file entry for
that quota target.

Next topics
Deleting a quota by removing resource restrictions on page 302
Deleting a quota by removing the quotas file entry on page 302

Deleting a quota by removing resource restrictions

You can remove a quota for a specific target by removing the resource restrictions for that target. This
is equivalent to changing that quota entry to a tracking quota.

Steps

1. Open the quotas file with the editor of your choice and edit the quotas file entry for the specified
target so that the quota entry becomes a tracking quota.

Example
Suppose your quotas file contained the following entry for the jdoe user:

jdoe user@/vol/vol2/ 100M 75K

To remove the restrictions for jdoe, you edit the entry as follows:

jdoe user@/vol/vol2/ - -

2. Save and close the quotas file.

The quotas file is updated but the change is not yet effective.

After you finish
Run the quota resize command to cause Data ONTAP to reread the quotas file; this will cause your
change to become effective.

Related concepts
About modifying quotas on page 286

Deleting a quota by removing the quotas file entry

You can remove a quota for a specific target by removing the quotas file entry for that target. Depending
on what other quotas you have set up, you then need to resize or reinitialize quotas.

Managing quotas | 303

Steps
1. Open the quotas file with the editor of your choice and remove the entry for the quota you want to

delete.
Note: If the change is temporary, you can disable the quota by prepending the pound sign (#) to
the line. This causes Data ONTAP to treat the line as a comment.

2. Save and close the quotas file.
The quotas file is updated but the change is not yet effective.

After you finish
If you have a default quota or default tracking quota in place for the quota type you modified, you can
use the quota resize command to cause Data ONTAP to reread the quotas file. Otherwise, reinitialize
quotas using the quota off and quota on commands for the volume for which you modified the
quota.

Related concepts
About modifying quotas on page 286

Managing quota message logging

You turn quota message logging on or off, for a single volume or for all volumes, using the quota
logmsg command. You can also specify a time interval during which quota messages are not logged.
This interval defaults to 60 minutes.

About this task
For more information about the quota logmsg command, see the na_quota(1) man page.

Displaying a quota report

You display a quota report using the quota report command. You can display a quota report for all
quotas or for a specific file, directory, qtree or volume by specifying a pathname.

Step
1. To display a quota report, enter the following command:

quota report [path]

304 | Data ONTAP 7.3 Storage Management Guide

You can display a quota report for all quotas or for a specific file, directory, qtree or volume by
specifying a path.
You can control the format and fields displayed using the quota report command options. For
more information on the available options, see the na_quota(1) man page.

Related concepts
How quota reports work on page 290
About quotas on page 265

Storage limits | 305

Storage limits

There are limits for aggregates, FlexVol volumes, traditional volumes, FlexCache volumes, qtrees and
RAID groups that you should consider when planning your storage architecture.

Limit Native storage Backend storage Notes
arrays

Maximum number of 100 In an active/active configuration,
aggregates and traditional this limit applies to each node
volumes (combined) per individually, so the overall limit
system for the pair is doubled.

Maximum number of FAS200 series/GF270c, FAS2020, and FAS2040: In an active/active configuration,
FlexVol volumes per
system 200 these limits apply to each node

All other models: 500 individually, so the overall limit
for the pair is doubled.

If you plan to perform a
non-disruptive upgrade, the
limitation on the number of
FlexVol volumes you can have
might be smaller than the numbers
listed here. For more information,
see the Data ONTAP Upgrade
Guide.

Maximum number of 100
FlexCache volumes on a
system

Maximum size of 16 TB
traditional volume

Maximum size of 16 TB
aggregate

Maximum size of FlexVol 16 TB
volume

Maximum size of file 16 TB

306 | Data ONTAP 7.3 Storage Management Guide

Limit Native storage Backend storage Notes
arrays
If you try to create more than 255
Maximum number of 255 clones, Data ONTAP
FlexClone files or automatically creates a new
FlexClone LUNs per file physical copy of the parent file or
or LUN LUN.
This limit could be lower for
Maximum size of FlexVol Model-dependent FlexVol volumes that use
volume for FlexClone files deduplication.
and FlexClone LUNs See table below.

Maximum number of 16 Any subsequent attempts to create
simultaneous FlexClone FlexClone files or FlexClone
file and FlexClone LUN LUNs after the maximum size is
operations per FlexVol reached cause Data ONTAP to
volume create physical copies of the
parent file or LUN.
Maximum number of 500 See the V-Series Support Matrix
simultaneous FlexClone
file and FlexClone LUN See table below.
operations per storage
system See the V-Series Support Matrix

Maximum total logical 16 TB
size of FlexClone file and
FlexClone LUNs per
FlexVol volume

Minimum size of array N/A Model-dependent
LUN for root volume
10 GB
Minimum size of FlexVol 20 MB Model-dependent
volume

Minimum size of root Model-dependent
FlexVol volume

Minimum size of N/A
aggregate

Maximum number of array N/A
LUNs in an aggregate

Maximum number of 4,995
qtrees in a volume

Storage limits | 307

Limit Native storage Backend storage Notes
arrays

Maximum number of 400
RAID groups on a storage
system

Maximum number of 150
RAID groups in an
aggregate

Maximum size of ATA/BSAS/SATA: 16 N/A
RAID-DP RAID groups FC/SAS: 28

Minimum size of 3 N/A

RAID-DP RAID groups

Default size of RAID-DP ATA/BSAS/SATA: 14 N/A
RAID groups

FC/SAS: 16

Maximum size of RAID4 FAS250: 14 N/A
RAID groups

All other models using

ATA/BSAS/SATA: 7

All other models using
FC/SAS: 14

Minimum size of RAID4 2 N/A
RAID groups N/A

Default size of RAID4 ATA/BSAS/SATA: 7
RAID groups FC/SAS: 8

Maximum size of RAID0 N/A 14
RAID groups 1
8
Minimum size of RAID0 N/A
RAID groups

Default size of RAID0 N/A
RAID groups

Table 6: Size requirement for root FlexVol volumes

Storage system model Minimum root FlexVol volume size
FAS250 9 GB
FAS270/GF270c 10 GB

308 | Data ONTAP 7.3 Storage Management Guide

Storage system model Minimum root FlexVol volume size
920 12 GB
940 14 GB
960 19 GB
980 23 GB
FAS2020 10 GB
FAS2040 16 GB
FAS2050 12 GB
3020 12 GB
3040 16 GB
3050 16 GB
3070 23 GB
3140 16 GB
3160 23 GB
3170 37 GB
6030 37 GB
6040 37 GB
6070 69 GB
6080 69 GB
R200 19 GB
SA200 12 GB
SA300 23 GB
SA600 69 GB

Table 7: Maximum FlexVol volume size for FlexClone files and FlexClone LUNs

Storage system model Maximum FlexVol volume size for FlexClone files
or FlexClone LUNs (TB)
FAS2020
FAS2040 1
FAS2050 3
3020 2
2

Storage system model Storage limits | 309

3040 Maximum FlexVol volume size for FlexClone files
3140 or FlexClone LUNs (TB)
3050
3070 4
3160 4
3170 3
6030 16
6040 16
6070 16
6080 16
R200 16
16
16
4



Abbreviations | 311

Abbreviations

A list of abbreviations and their spelled-out forms are included here for your reference.

A

ABE (Access-Based Enumeration)
ACE (Access Control Entry)
ACL (access control list)
AD (Active Directory)
ALPA (arbitrated loop physical address)
ALUA (Asymmetric Logical Unit Access)
AMS (Account Migrator Service)
API (Application Program Interface)
ARP (Address Resolution Protocol)
ASCII (American Standard Code for Information Interchange)
ASP (Active Server Page)
ATA (Advanced Technology Attachment)

B

BCO (Business Continuance Option)
BIOS (Basic Input Output System
BURT (Bug Reporting Tool)
BCS (block checksum )
BLI (block-level incremental)

312 | Data ONTAP 7.3 Storage Management Guide

C

CD-ROM (compact disc read-only memory)
CDDI (Copper Distributed Data Interface)
CDN (content delivery network)
CFE (Common Firmware Environment)
CFO (cluster failover)
CGI (Common Gateway Interface)
CHA (channel adapter)
CHAP (Challenge Handshake Authentication Protocol)
CHIP (Client-Host Interface Processor)
CIDR (Classless Inter-Domain Routing)
CIFS (Common Internet File System)
CIM (Common Information Model)
CLI (command-line interface)
CP (consistency point)
CPU (central processing unit)
CRC (cyclic redundancy check)
CSP (communication service provider)

Abbreviations | 313

D

DAFS (Direct Access File System)
DBBC (database consistency checker)
DCE (Distributed Computing Environment)
DDS (Decru Data Decryption Software)
dedupe (deduplication)
DES (Data Encryption Standard)
DFS (Distributed File System)
DHA (Decru Host Authentication)
DHCP (Dynamic Host Configuration Protocol)
DIMM (dual-inline memory module)
DITA (Darwin Information Typing Architecture)
DLL (Dynamic Link Library)
DMA (direct memory access)
DMTD (Distributed Management Task Force)
DNS (Domain Name System)
DOS (Disk Operating System)
DPG (Data Protection Guide)
DTE (Data Terminal Equipment)

314 | Data ONTAP 7.3 Storage Management Guide

E

ECC (Elliptic Curve Cryptography) or (EMC Control Center)
ECDN (enterprise content delivery network)
ECN (Engineering Change Notification)
EEPROM (electrically erasable programmable read-only memory)
EFB (environmental fault bus)
EFS (Encrypted File System)
EGA (Enterprise Grid Alliance)
EISA (Extended Infrastructure Support Architecture)
ELAN (Emulated LAN)
EMU environmental monitoring unit)
ESH (embedded switching hub)

F

FAQs (frequently asked questions)
FAS (fabric-attached storage)
FC (Fibre Channel)
FC-AL (Fibre Channel-Arbitrated Loop)
FC SAN (Fibre Channel storage area network)
FC Tape SAN (Fibre Channel Tape storage area network)
FC-VI (virtual interface over Fibre Channel)
FCP (Fibre Channel Protocol)
FDDI (Fiber Distributed Data Interface)
FQDN (fully qualified domain name)
FRS (File Replication Service)
FSID (file system ID)
FSRM (File Storage Resource Manager)
FTP (File Transfer Protocol)

Abbreviations | 315

G

GbE (Gigabit Ethernet)
GID (group identification number)
GMT (Greenwich Mean Time)
GUI (graphical user interface)
GUID (globally unique identifier)

H

HA (high availability)
HBA (host bus adapter)
HDM (Hitachi Device Manager Server)
HP (Hewlett-Packard Company)
HTML (hypertext markup language)
HTTP (Hypertext Transfer Protocol)

316 | Data ONTAP 7.3 Storage Management Guide

I

IB (InfiniBand)
IBM (International Business Machines Corporation)
ICAP (Internet Content Adaptation Protocol)
ICP (Internet Cache Protocol)
ID (identification)
IDL (Interface Definition Language)
ILM (information lifecycle management)
IMS (If-Modified-Since)
I/O (input/output)
IP (Internet Protocol)
IP SAN (Internet Protocol storage area network)
IQN (iSCSI Qualified Name)
iSCSI (Internet Small Computer System Interface)
ISL (Inter-Switch Link)
iSNS (Internet Storage Name Service)
ISP (Internet storage provider)

J

JBOD (just a bunch of disks)
JPEG (Joint Photographic Experts Group)

K

KB (Knowledge Base)
Kbps (kilobits per second)
KDC (Kerberos Distribution Center)

Abbreviations | 317

L

LAN (local area network)
LBA (Logical Block Access)
LCD (liquid crystal display)
LDAP (Lightweight Directory Access Protocol)
LDEV (logical device)
LED (light emitting diode)
LFS (log-structured file system)
LKM (Lifetime Key Management)
LPAR (system logical partition)
LRC (Loop Resiliency Circuit)
LREP (logical replication tool utility)
LUN (logical unit number)
LUSE (Logical Unit Size Expansion)
LVM (Logical Volume Manager)

318 | Data ONTAP 7.3 Storage Management Guide

M

MAC (Media Access Control)
Mbps (megabits per second)
MCS (multiple connections per session)
MD5 (Message Digest 5)
MDG (managed disk group)
MDisk (managed disk)
MIB (Management Information Base)
MIME (Multipurpose Internet Mail Extension)
MMC (Microsoft Management Console)
MMS (Microsoft Media Streaming)
MPEG (Moving Picture Experts Group)
MPIO (multipath network input/output)
MRTG (Multi-Router Traffic Grapher)
MSCS (Microsoft Cluster Service
MSDE (Microsoft SQL Server Desktop Engine)
MTU (Maximum Transmission Unit)

N

NAS (network-attached storage)
NDMP (Network Data Management Protocol)
NFS (Network File System)
NIC (network interface card)
NMC (Network Management Console)
NMS (network management station)
NNTP (Network News Transport Protocol)
NTFS (New Technology File System)
NTLM (NetLanMan)
NTP (Network Time Protocol)
NVMEM (nonvolatile memory management)
NVRAM (nonvolatile random-access memory)

Abbreviations | 319

O

OFM (Open File Manager)
OFW (Open Firmware)
OLAP (Online Analytical Processing)
OS/2 (Operating System 2)
OSMS (Open Systems Management Software)
OSSV (Open Systems SnapVault)

P

PC (personal computer)
PCB (printed circuit board)
PCI (Peripheral Component Interconnect)
pcnfsd (storage daemon)
(PC)NFS (Personal Computer Network File System)
PDU (protocol data unit)
PKI (Public Key Infrastructure)
POP (Post Office Protocol)
POST (power-on self-test)
PPN (physical path name)
PROM (programmable read-only memory)
PSU power supply unit)
PVC (permanent virtual circuit)

Q

QoS (Quality of Service)
QSM (Qtree SnapMirror)

320 | Data ONTAP 7.3 Storage Management Guide

R

RAD (report archive directory)
RADIUS (Remote Authentication Dial-In Service)
RAID (redundant array of independent disks)
RAID-DP (redundant array of independent disks, double-parity)
RAM (random access memory)
RARP (Reverse Address Resolution Protocol)
RBAC (role-based access control)
RDB (replicated database)
RDMA (Remote Direct Memory Access)
RIP (Routing Information Protocol)
RISC (Reduced Instruction Set Computer)
RLM (Remote LAN Module)
RMC (remote management controller)
ROM (read-only memory)
RPM (revolutions per minute)
rsh (Remote Shell)
RTCP (Real-time Transport Control Protocol)
RTP (Real-time Transport Protocol)
RTSP (Real Time Streaming Protocol)

Abbreviations | 321

S

SACL (system access control list)
SAN (storage area network)
SAS (storage area network attached storage) or (serial-attached SCSI)
SATA (serial advanced technology attachment)
SCSI (Small Computer System Interface)
SFO (storage failover)
SFSR (Single File SnapRestore operation)
SID (Secure ID)
SIMM (single inline memory module)
SLB (Server Load Balancer)
SLP (Service Location Protocol)
SNMP (Simple Network Management Protocol)
SNTP (Simple Network Time Protocol)
SP (Storage Processor)
SPN (service principal name)
SPOF (single point of failure)
SQL (Structured Query Language)
SRM (Storage Resource Management)
SSH (Secure Shell)
SSL (Secure Sockets Layer)
STP (shielded twisted pair)
SVC (switched virtual circuit)

322 | Data ONTAP 7.3 Storage Management Guide

T

TapeSAN (tape storage area network)
TCO (total cost of ownership)
TCP (Transmission Control Protocol)
TCP/IP (Transmission Control Protocol/Internet Protocol)
TOE (TCP offload engine)
TP (twisted pair)
TSM (Tivoli Storage Manager)
TTL (Time To Live)

U

UDP (User Datagram Protocol)
UI (user interface)
UID (user identification number)
Ultra ATA (Ultra Advanced Technology Attachment)
UNC (Uniform Naming Convention)
UPS (uninterruptible power supply)
URI (universal resource identifier)
URL (uniform resource locator)
USP (Universal Storage Platform)
UTC (Universal Coordinated Time)
UTP (unshielded twisted pair)
UUID (universal unique identifier)
UWN (unique world wide number)

Abbreviations | 323

V

VCI (virtual channel identifier)
VCMDB (Volume Configuration Management Database)
VDI (Virtual Device Interface)
VDisk (virtual disk)
VDS (Virtual Disk Service)
VFM (Virtual File Manager)
VFS (virtual file system)
VI (virtual interface)
vif (virtual interface)
VIRD (Virtual Router ID)
VLAN (virtual local area network)
VLD (virtual local disk)
VOD (video on demand)
VOIP (voice over IP)
VRML (Virtual Reality Modeling Language)
VTL (Virtual Tape Library)

W

WAFL (Write Anywhere File Layout)
WAN (wide area network)
WBEM (Web-Based Enterprise Management)
WHQL (Windows Hardware Quality Lab)
WINS (Windows Internet Name Service)
WORM (write once, read many)
WWN (worldwide name)
WWNN (worldwide node name)
WWPN (worldwide port name)
www (worldwide web)

324 | Data ONTAP 7.3 Storage Management Guide
X
Y
Z
ZCS (zoned checksum)

Index Index | 325

/vol/vol0, root volume 157 block checksum type
changing for array LUNs 85
A why change for array LUNs 84

acp C
defined 41
changing system assignment 59
aggregate checksum type
states 122
status 122 changing for array LUNs 85
performance implications 84
aggregate overcommitment storage capacity implications 84
about 247 why change for array LUNs 84
bringing volumes online with 248 checksum type rules 126
CIFS oplocks
aggregates disabling for a volume 260
root option 170 enabling for a volume 260
adding disks to 132, 134 enabling for the system 260
adding smaller disks to 127 commands to display storage information 89
bringing online 135
containing, displaying 177 D
creating 129
destroying 139 data
forcing disk adds for 134 reconstruction, controlling perfomance impact 114
free space, displaying 139 selectively sanitizing in FlexVol volumes 77
increasing the size of 132 selectively sanitizing in traditional volumes 80
mirrored, defined 121
mixed speed 124 Data ONTAP, with array LUNs 101
mixing array LUNs in 126 default root volume 157
moving for disks 141 degraded mode 105
moving with array LUNs 143 directories, converting to qtrees 253
overview 119 disk
RAID level, changing 136
restricting 136 block checksum 30
taking offline 135 connection architecture 28
undestroying 140 failures, reducing 38
unmirrored, defined 119 format 30
ids 32
Alternate Control Path (ACP) information, displaying 37, 90
defined 41 offline temporarily 38
ownership
array LUNs, See LUNs (array)
assigning to a system 47 automatically erasing 66
autoassignment 49 changing type 62
determining type 61
B displaying 57
erasing manually 67
BCS disks (block checksum disks) 30 type supported by platform 53

326 | Data ONTAP 7.3 Storage Management Guide

disk (continued) FlexCache volumes (continued)
ownership, MetroCluster and 52 cache consistency and 192
ownership, software-based 45 cache hits and misses 194
performance monitors 37 connectivity loss 189
sanitization 33, 76 creating 199
sanitization, selective 35 delegations and 192
space information, displaying 37, 91 files and 191
speed 30 flushing files from 201
types for RAID 32, 99 free space, displaying for 200
zoned checksum 31 LAN deployment for 195
capacity by disk size 28 limitations of 185
command, using wildcard character with 60 LUNs and 196
failed with available spare 105 NFS export status and 191
failed with no spare 107 sizing 186
ownership space management and 187
about 45 space, sharing with other volumes 188
autoassignment 49 statistics, viewing 188
hardware-based 51 status 196, 202
software-based 45 volumes you can use for 186
RPM 30 WAN deployment for 195
selection from heterogeneous storage 124 write operation proxy and 193
speed, mixing in an aggregate 124
types supported 27 FlexClone files and FlexClone LUNs
about 215
disk ownership clearing failed clone status 239
application to array LUNs 46 clone log file 225
changing 62 considerations 219
ownership creating a FlexClone file or FlexClone LUN 235
removing ownership information 87 deleting 223
removing information written to an array LUN 87 differences between FlexClone LUNs and LUN clones
220
disk remove -w hardware platform support 219
removing ownership information on an array LUN 87 how 215
interoperability with Data ONTAP features 226
disks limits 221
removing 72 maximum FlexVol volume size 221
replacing 71 maximum limit on shared data in a volume 221
adding 69 maximum number of FlexClone files or LUNs 221
adding smaller to aggregate 127 maximum number of status entries in the metadata file
adding to aggregates 132 221
forcing additions of 134 maximum simultaneous FlexClone file or LUN
operations 221
DS4243 moved or renamed during clone operation 242
ACP protocol 41 operations 235
prerequisites 235
F Rapid Cloning Utility 226
space saving 224
Fibre Channel Arbitrated Loop (FC-AL) 28 stopping FlexClone file or LUN operation 239
FlexCache usage at file, LUN, and volume level 217
uses 218
statistics, client, displaying 201 viewing space saving 240
statistics, server, viewing 202
FlexCache volumes
attribute cache timeouts and 192
basic unit of cache 191

Index | 327

FlexClone files and FlexClone LUNs (continued) FlexVol volumes (continued)
viewing the status 238 maximum files, increasing 168
when clients write new data to parent or FlexClone renaming 167
files and LUNs 223 resizing 175
when FlexClone file or LUN operations fails 241 restricting 165
sanitizing data in 77
FlexClone files and FlexClone LUNs interoperability taking offline 166
with single file SnapRestore 231
when system reboots 232 fractional reserve
with access control list 233 and space management 243
with an active/ active configuration 232
with deduplication 229 free space
with file folding 231 automatically increasing 155, 246
with FlexShare 233 displaying for an aggregate 139
with MultiStore 230 FlexCache volumes, displaying for 200
with NDMP and dump 230 used by FlexClone volumes, determining 213
with qtree SnapMirror and SnapVault 228
with quotas 229 H
with role-based access control list 233
with Snapshot copies 227 host adapters, enabling or disabling 93
with space reservation 230 hot spares
with synchronous SnapMirror 228
with volume autosize 231 defined 103
with volume clone 232 appropriate 104
with volume SnapMirror 227 best practices 103
with volume SnapRestore 231 failed disk with available 105
with volume-copy 231 failed disk with no spare 107
matching 103
FlexClone volumes what disks can be used as 103
about 205
creating 211 I
parent volume, determining 213
shared Snapshot copies and 208 inodes 156
shared Snapshot copies, identifying 208
SnapMirror replication and 208 L
space guarantees and 207
space used, determining 213 low spare warnings 105
splitting from parent volume 212 LUNs (array) 46, 47, 49, 59, 83, 84, 85, 86, 88, 101, 126,
splitting, about 209
unsupported operations 206 143
changing checksum type 85
FlexVol volumes checksum type of 84
about 147 Data ONTAP owning 46
automatic free space preservation, configuring 177 Data ONTAP RAID groups with 101
automatically adding space for 155, 246 managing through Data ONTAP 83
automatically grow, configuring to 176 mixing in an aggregate 126
bringing online 166 moving aggregates 143
containing aggregate, displaying 177 name format 83
creating 173 prerequisites to changing composition 85, 86
destroying 167 prerequisites to changing size 85, 86
language, changing 169
maximum files
about 156

328 | Data ONTAP 7.3 Storage Management Guide

LUNs (array) (continued) qtrees (continued)
RAID groups when to use 249
RAID groups
RAID0 quota reports
RAID0 RAID group requirements 101 displaying 303
RAID0 RAID group requirements 101 displaying ID field in 293
relationship to RAID0 aggregates 101 fields 291
requirements before removing a system running Data options and 292
ONTAP from service 88
quotas
M activating 299
activating, about 285
maintenance center deactivating 301
description 39 default 267
using manually 40 deleting 302
when disks go into 39 derived 269
examples 293
media scrub explicit 268
continuous 40 hard 278
inheritance by qtrees 278
mirror verification initialization, cancelling 301
controlling performance impact 116 linking UNIX and Windows names for 275
message logging, configuring 303
N modifying, about 286
notifications 266
names process 266
format of array LUNs 83 qtree deletion, and 289
qtree rename and 289
P QUOTA_PERFORM_USER_MAPPING directive
and 275
performance reinitialization, when required 288
effect of checksum type 84 reinitializing 300
reinitializing, about 285
persistent reservations resizing 301
releasing all 88 resizing, when you can use 286
root user and 273
plex security style changes and 289
defined 121 SNMP traps for 266
resynchronization, controlling performance impact 115 soft 278
special Windows groups and 273
Q targets 266
threshold 278
qtrees tracking 269
converting directory to 253 tree 277
creating 251 types 266
deleting 255 UNIX users and 271
deletion, quotas and 289 user and group, working with qtrees 277
name restrictions 250 user IDs in mixed environments and 274
renaming 256 users with multiple IDs and 273
renaming, quotas and 289 why you use 265
statistics, displaying 252 Windows users and 271
status 252
volumes, compared with 249

Index | 329

quotas file root volume (continued)
character encodings supported by 284 size requirement 158
Disk field 280
Files field 281 S
how Data ONTAP reads 283
Quota Target field 279 sanitizing data
sample 284 selectively, in FlexVol volumes 77
Soft Disk field 282 selectively, in traditional volumes 80
Soft Files field 283
Threshold field 282 scrub, controlling performance impact 114
Type field 279 securing styles

R changing, quotas and 289
security styles
RAID
SyncMirror and 97 about 153
changing level 136 changing 263
data reconstruction, controlling performance impact default 155
114 Serial attached SCSI (SAS) 28
operations, controlling performance impact 113 size
protection by third-party storage changing array LUN size 85, 86
LUNs (array) SnapVault and FlexCache 186
RAID protection 97 space guarantees
RAID0 about 245
protection for array LUNs 97 configuring 246
scrub, controlling performance impact 114 space management option 243
traditional volumes and 245
RAID disk types 32, 99 space management
RAID groups 97, 100, 101, 102, 111, 134 choosing 243
FlexCache volumes and 187
definition 100 how it works 243
maximum number allowed 102 space reservations
naming convention 100 about 246
size 101 space management option 243
addiing disks to 134 spare array LUNs
for array LUNs 97 changing array LUN assignment 59
size, changing 111 changing system assignment 59
RAID-DP 96 disk ownership 59
RAID-level disk scrubs spare disks
running manually 109 defined 103
scheduling 108 appropriate 104
RAID4 96 failed disk with available 105
Rapid RAID Recovery 38 failed disk with no spare 107
resizing FlexVol volumes 175 matching 103
resynchronization, controlling performance impact 115 warnings for low spares 105
right-sizing 28 what disks can be used as 103
root option for aggregates 170 speed, disk, mixing 124
root volume storage
changing 170 mixing array LUNs in an aggregate 126
default name 157 storage capacity
space guarantees and 158 effect of checksum type on 84
minimum size 158 storage subsystems
viewing information about 91

330 | Data ONTAP 7.3 Storage Management Guide

SyncMirror volumes
RAID and 97 automatically adding space for 155, 246
bringing online 166
T destroying 167
FlexVol, about 147
traditional volumes language 149
about 148 language, changing 169
bringing online 166 maximum files
creating 179 about 156
destroying 167 maximum files, increasing 168
language, changing 169 migrating traditional to FlexVol 161
maximum files renaming 167
about 156 restricting 165
maximum files, increasing 168 taking offline 166
migrating to FlexVol volumes 161 traditional, about 148
renaming 167
restricting 165 W
selectively sanitizing data in 80
taking offline 166 when Data ONTAP can use 49
wildcard character, using with disk command 60
tree quotas 277 Windows applications, preserving UNIX permissions 154

U Z

undestroying aggregates 140 ZCDs (zoned checksum disks) 31
usermap.cfg file, wildcard entries in 276 zoned checksum type

V changing for array LUNs 85
checksum type
volume
attributes 148 matching array LUN and aggregate checksum
names, duplicate 150 type 84, 85
status 150 why change for array LUNs 84