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106 Fabric OS Encryption Administrator’s Guide (DPM)
53-1002922-01
Viewing time left for auto rekey
2
• If you are running a Fabric OS version earlier than v7.1.0, LUN status is shown as Not
Applicable.
• Zero detect with encryption is not supported.
Thin Provisioning support
Thin-provisioned logical unit numbers (LUNs) are increasingly used to support a pay-as-you-grow
strategy for data storage capacity. Also known as dynamic provisioning, virtual LUNs, or thin LUNs,
the same technology that allows storage administrators to allocate physical disk space to LUNs on
an as-needed basis creates limitations around certain data-at-rest encryption operations that use
the Brocade Encryption Switch or blade. Performing first-time encryption (FTE) (conversion of
cleartext to ciphertext) and data rekeying operations (applying new data encryption keys to
ciphertext data) on thin-provisioned LUNs results in an attempt by the encryption switch to
overwrite data up to the size of the logical size of the thin-provisioned LUN, rather than limiting
FTE/rekeying to the size of the physically allocated LUN size or to the data that has been written.
This generally triggers the allocation of additional blocks to the thin-provisioned LUN, using up the
amount of physical disk space that is available to the LUN and defeating the objective of using thin
provisioning.
Additionally, for thin-provision capable storage products that support space reclamation based on
data pattern recognition (for example, ‘string of zeros’), the encryption of such patterns will
interfere with the space reclamation functionality of the storage and should be avoided.
Certain types of storage have been successfully tested by limiting the use of thin provisioning to
“greenfield” LUNs, or LUNs that do not have any written data yet. Rekeying operations on these
LUNs, like FTE, are also not permitted. As these limitations are not feasible for most environments,
the recommendation from Brocade is that any encrypted LUNs be fully provisioned with disk.
Viewing time left for auto rekey
You can view the time remaining until auto rekey is no longer active for a disk LUN. The information
is expressed as the difference between the next rekey date and the current date and time, and is
measured in days, hours, and minutes.
Although you cannot make changes directly to the table, you can modify the time left using CLI. For
more information, refer to Chapter 3, “Configuring Encryption Using the CLI”.
To view the time left for auto rekey, follow these steps:
1. Select Configure > Encryption from the menu task bar to display the Encryption Center
dialog box. (Refer to Figure 6 on page 14.)
2. Select a group, switch, or engine from the Encryption Center Devices table for which to view the
auto rekey information, then select Group/Switch/Engine > Targets from the menu task bar.
NOTE
You can also select a group, switch, or engine from the Encryption Center Devices table, then
click the Targets icon.
The Encryption Targets dialog box displays. (Refer to Figure 47.)
- Fabric OS Encryption 1
- Document History 2
- Document Title iii 3
- 53-1002720-02 3
- Contents 5
- 53-1002922-01 10
- About This Document 15
- What’s new in this document 16
- Document conventions 16
- Command syntax conventions 17
- Notes, cautions, and warnings 17
- Additional information 18
- Getting technical help 19
- Document feedback 20
- Encryption Overview 21
- Terminology 22
- The Brocade Encryption Switch 24
- The FS8-18 blade 25
- FIPS mode 25
- Performance licensing 25
- Usage limitations 26
- FIGURE 2 Encryption overview 27
- FIGURE 3 Frame redirection 28
- IO Sync LAN 29
- FIGURE 5 DEK life cycle 30
- Master key management 31
- Support for virtual fabrics 31
- Encryption Center features 34
- Encryption user privileges 35
- Smart card usage 36
- Using system cards 41
- Deregistering system cards 43
- Using smart cards 43
- Tracking smart cards 44
- Editing smart cards 46
- Network connections 47
- Blade processor links 47
- (KAC) certificate 48
- Encryption preparation 55
- Creating an encryption group 55
- --initnode command 65
- --set -keyvault command 65
- --reg keyvault command 65
- Creating HA clusters 72
- Failback option 74
- Invoking failback 74
- Adding an encryption target 75
- FIGURE 46 Next Steps screen 83
- Configuring storage arrays 91
- Remote replication LUNs 91
- Moving targets 96
- Tape LUN statistics 99
- Encryption engine rebalancing 103
- Master keys 104
- Active master key 105
- Alternate master key 105
- Master key actions 106
- ATTENTION 107
- Creating a master key 113
- Security settings 114
- Setting zeroization 115
- Redirection zones 117
- Disk device decommissioning 117
- Decommissioning disk LUNs 118
- Displaying Universal IDs 120
- Setting disk LUN Re-key All 121
- Thin provisioned LUNs 125
- Thin Provisioning support 126
- General tab 133
- Members tab 135
- Members tab Remove button 136
- Security tab 137
- HA Clusters tab 139
- Tape Pools tab 141
- Adding tape pools 142
- Engine Operations tab 143
- TABLE 3 Encryption acronyms 144
- In this chapter 145
- Overview 146
- Command validation checks 146
- (Continued) 148
- Cryptocfg Help command output 150
- Management LAN configuration 150
- Configuring cluster links 151
- Node is a group leader node 152
- Node is a member node 152
- • FIPS crypto officer 153
- • FIPS user 153
- • Node CP certificate 153
- Submitting the CSR to a CA 156
- • cryptocfg --initEE 163
- • cryptocfg --regEE 163
- • cryptocfg --enableEE 163
- High availability clusters 168
- Creating an HA cluster 169
- Policy Configuration Examples 172
- Re-exporting a master key 173
- Viewing the master key IDs 174
- Zoning considerations 177
- Frame redirection zoning 178
- Gathering information 182
- Crypto LUN configuration 186
- Discovering a LUN 187
- Configuring a Crypto LUN 187
- Configuring a tape LUN 191
- Decommissioning LUNs 195
- SRDF LUNs 199
- SRDF pairs 200
- Adding replication LUNs 201
- Reading metadata after sync 202
- -newLUN option 203
- TF snapshot rekeying details 208
- ID> <initiator PWWN> 209
- -not_ready option of TF 209
- <initiator PWWN> 209
- Tape pool configuration 213
- Tape pool labeling 214
- NetBackup labeling 215
- NetWorker labeling 215
- Creating a tape pool 216
- Deleting a tape pool 216
- Modifying a tape pool 217
- First-time encryption 222
- Data rekeying 225
- Resource allocation 226
- Rekeying modes 226
- Deployment Scenarios 231
- --rdcreate [host wwn] 240
- FIGURE 103 FCIP deployment 242
- Data mirroring deployment 243
- VMware ESX server deployments 245
- General guidelines 248
- Enabling a disabled LUN 253
- HP-UX considerations 253
- AIX considerations 253
- Disk metadata 254
- Tape metadata 254
- Tape data compression 255
- Tape pools 255
- Tape block zero handling 256
- Tape key expiry 256
- Avoid double encryption 258
- PID failover 258
- Manual rekey 259
- Latency in rekey operations 259
- Key vault best practices 263
- Tape device LUN mapping 263
- Deleting an encryption group 269
- Removing an HA cluster member 269
- Deleting an HA cluster member 273
- Failover/failback example 274
- Recovery 275
- -hbmisses and -hbtimeout 280
- Key vault diagnostics 286
- --perfshow 287
- -portperfshow 287
- Command Activity 291
- Problem Resolution 291
- General errors and conditions 292
- LUN policy troubleshooting 299
- MPIO and internal LUN states 301
- Multi-node EG replacement 302
- Single-node EG replacement 304
- Multi-node EG Case 305
- Single-node EG Replacement 308
- Deregistering a DPM key vault 310
- FIGURE 111 DPM Clients page 311
- TABLE 15 Compatibility Matrix 313
- Encryption group Nodes 314
- State and Status Information 317
- Security processor KEK status 318
- Encrypted LUN states 318
- TABLE 22 Tape LUN states 321
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