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HP StoreOnce 4430 HP StoreOnce Backup System Concepts and Configuration Guidel - Page 107

Status, Warning, Caution, Last Idle, Time Idle Last 24 Hours, Load graph, Housekeeping Statistics

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On the StoreOnce Management Interface go to the Housekeeping page; a series of graphs and a configuration capability is displayed. There are four tabs on the Housekeeping page: Overall, Libraries, Shares and StoreOnce Catalyst. The Overall tab shows the total housekeeping load on the appliance. The other tabs can be used to select the device type and monitor housekeeping load on individual named VTL, NAS shares or Catalyst stores. Note how the Housekeeping blackout window configuration setting is shown below the Housekeeping status. The housekeeping blackout window is set on an appliance basis not an individual device type basis. NOTE: With the HP B6200 Backup system, housekeeping statistics are per service set. Figure 59 Housekeeping jobs received versus housekeeping jobs processed The Housekeeping load on the target replication devices is generally higher than on the source devices and must be monitored/observed on those devices - you cannot monitor the target housekeeping load from the source device. The key features within this section are: • Housekeeping Statistics: nl nl Status has three options: OK if housekeeping has been idle within the last 24 hours, Warning if housekeeping has been processing nonstop for the last 24 hours, Caution if housekeeping has been processing nonstop for the last 7 days. nl nl Last Idle is the date and time when the housekeeping processing was last idle. nl nl Time Idle (Last 24 Hours) is a percentage of the idle time in the last 24 hours. nl nl Time Idle (Last 7 Days) is a percentage of the idle time in the last 7 days. • Load graph (top graph): will display what levels of load the StoreOnce appliance is under when housekeeping is being processed. However this graph is intended for use when housekeeping is affecting the performance of the StoreOnce appliance (e.g. housekeeping Tuning housekeeping using the StoreOnce GUI 107

Section	Page
Backup systems Concepts and Configuration Guidelines	1
Contents	3
1 Before you start	7
Overview	7
HP StoreOnce Backup system models	7
StoreOnce Catalyst targets for backup applications	8
NAS targets for backup applications	9
Virtual Tape Library targets for backup applications	9
Comparing StoreOnce Catalyst, NAS and Virtual Tape Library target devices	9
Networking and Fibre Channel considerations	10
Licensing	11
Security Features	12
For more information	13
2 HP StoreOnce technology	14
Data deduplication	14
Key performance factors with deduplication that occurs on the StoreOnce Backup system	14
VTL and NAS Replication overview	15
Key performance factors with replication	15
Catalyst Copy and deduplication	15
Housekeeping	15
Backup Application considerations	16
Multi-stream or multiplex, what do they mean?	16
Why multiplexing is a bad practice	16
Effect of multiple streams on StoreOnce Performance	18
Data compression and encryption backup application features	21
3 Concepts specific to StoreOnce B6200 Backup system	22
The HP StoreOnce B6200 Backup system	22
B6200 Basic Concepts	23
Deployment choices	25
4 Networking considerations	27
Common networking considerations	27
Supported Ethernet configurations	27
Network bonding modes	28
Network configuration in single-node StoreOnce Backup systems	28
General guidelines	29
Single port configurations	30
Dual port configurations	31
Bonded port configurations (recommended)	32
10GbE Ethernet ports on StoreOnce Backup systems	33
Network configuration for CIFS AD	33
Option 1: HP StoreOnce Backup system on Corporate SAN and Network SAN	34
Option 2: HP StoreOnce Backup system on Network SAN only with Gateway	35
5 Network configuration in multi-node StoreOnce Backup systems	36
What is currently supported	36
What is not currently supported	36
Supported network configurations (templates)	36
Gateway considerations	37
Template 1, uses 10 GbE and 1 GbE sub-nets	37
Template 2, uses 1GbE network only	38
Template 3, uses 10GbE network only	39
Template 4, uses two 1GbE networks	39
Template 5, uses 1GbE network only	40
6 Fibre Channel considerations	41
Port assignment for StoreOnce Backup systems with two Fibre Channel cards	41
General Fibre Channel configuration guidelines	42
Switched fabric	42
Direct Attach (private loop)	44
Zoning	44
Use soft zoning for high availability	45
Diagnostic Fibre Channel devices	46
7 Configuring FC to support failover in a StoreOnce B6200 Backup system environment	47
Autonomic failover	47
What happens during autonomic failover?	47
Failover support with backup applications	48
Designing for failover	49
Key Failover FC zoning considerations	49
Fibre channel port presentations	50
Scenario 1, single fabric with dual switches, recommended	52
Scenario 2, single fabric with dual switches, not advised	53
Scenario 3, dual fabric with dual switches, recommended	54
What happens if a fabric fails?	55
Scenario 4, dual fabric with dual switches, not advised	56
8 StoreOnce Catalyst stores	58
StoreOnce Catalyst technology	58
Key features	58
StoreOnce interfaces with StoreOnce Catalyst	59
Catalyst Copy	60
Summary of Catalyst best practices	61
StoreOnce Catalyst and the StoreOnce GUI	62
Maximum concurrent jobs and blackout windows	62
Client access permissions	63
More information	64
9 Virtual Tape Devices	65
Overview	65
Tape Library Emulation	65
Emulation types	65
Cartridge sizing	66
Number of libraries per appliance	66
Backup application and configuration	66
Blocksize and transfer size	66
Rotation schemes and retention policy	67
Retention policy	67
Rotation scheme	67
Summary of VTL best practices	68
10 NAS shares	70
Operating system support	70
Backup application support	70
Shares and deduplication stores	70
Maximum concurrently open files	71
Maximum number of NAS shares	71
Maximum number of files per NAS share and appliance	71
Maximum number of users per CIFS share	72
Maximum number of hosts per NFS share	72
CIFS share authentication	72
Backup application configuration	72
Backup file size	73
Disk space pre-allocation	74
Block/transfer size	74
Concurrent operations	74
Buffering	74
Overwrite versus append	74
Compression and encryption	75
Verify	75
Synthetic full backups	75
Summary of NAS best practices	75
11 Replication	77
What is replication?	77
StoreOnce VTL and NAS replication overview	78
Replication usage models (VTL and NAS)	78
What to replicate	81
Appliance library and share replication fan in/fan out	82
Concurrent replication jobs	82
Apparent replication throughput	82
What actually happens in replication?	83
Limiting replication concurrency	83
WAN link sizing	83
Seeding and why it is required	84
Replication models and seeding	85
Controlling Replication	86
Replication blackout windows	87
Replication bandwidth limiting	87
Source appliance permissions	88
12 Seeding methods in more detail	89
Seeding over a WAN link	89
Co-location (seed over LAN)	92
Floating StoreOnce seeding	94
Seeding using physical tape or portable disk drive	95
13 Implementing replication with the HP B6200 Backup system	98
Active/Passive and Active/Active configurations	98
Many to One configurations	102
Implementing floating StoreOnce seeding	102
Balancing Many-to-One replication	103
Replication and load balancing	104
14 Housekeeping	106
Housekeeping Blackout window	106
Tuning housekeeping using the StoreOnce GUI	106
15 Tape Offload	109
Terminology	109
Direct Tape Offload	109
Backup application Tape Offload/Copy from StoreOnce Backup system	109
Backup application Mirrored Backup from Data Source	109
Tape Offload/Copy from StoreOnce Backup system versus Mirrored Backup from Data Source	110
When is Tape Offload required?	110
Catalyst device types	110
VTL and NAS device types	111
HP StoreOnce Optimum Configuration for Tape Offload	112
Offload Considerations	112
VTL Cloning/Media Copy to Physical Tape	112
HP StoreEver Tape Libraries	113
Backup Application	113
HP StoreOnce Optimum Tape Offload Configuration	113
16 Key parameters	115
StoreOnce B6200 Backup	115
StoreOnce 2700, 4500 and 4700 Backup	116
StoreOnce 2610/2620, 4210/4220 and 4420/4430 Backup	117
About this guide	120
Intended audience	120
Related documentation	120
Document conventions and symbols	120
HP technical support	121
HP websites	121

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On the StoreOnce Management Interface go to the Housekeeping page; a series of graphs and

a configuration capability is displayed.

There are four tabs on the Housekeeping page: Overall, Libraries, Shares and StoreOnce Catalyst.

The Overall tab shows the total housekeeping load on the appliance. The other tabs can be used

to select the device type and monitor housekeeping load on individual named VTL, NAS shares

or Catalyst stores. Note how the Housekeeping blackout window configuration setting is shown

below the Housekeeping status. The housekeeping blackout window is set on an appliance basis

not an individual device type basis.

NOTE:

With the HP B6200 Backup system, housekeeping statistics are per service set.

Figure 59 Housekeeping jobs received versus housekeeping jobs processed

The Housekeeping load on the target replication devices is generally higher than on the source

devices and must be monitored/observed on those devices – you cannot monitor the target

housekeeping load from the source device.

The key features within this section are:

•

Housekeeping Statistics:

Status

has three options:

if housekeeping has been idle within the last 24 hours,

Warning

if housekeeping has been processing nonstop for the last 24 hours,

Caution

if housekeeping

has been processing nonstop for the last 7 days.

Last Idle

is the date and time when the housekeeping processing was last idle.

Time Idle (Last 24 Hours)

is a percentage of the idle time in the last 24 hours.

Time Idle (Last 7 Days)

is a percentage of the idle time in the last 7 days.

•

Load graph

(top graph): will display what levels of load the StoreOnce appliance is under

when housekeeping is being processed. However this graph is intended for use when

housekeeping is affecting the performance of the StoreOnce appliance (e.g. housekeeping

Tuning housekeeping using the StoreOnce GUI

107