HP 12000 HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 92

Supported Backup Applications and Data Types, Licensing, Migrating your Existing Backup Data

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Supported Backup Applications and Data Types Accelerated deduplication can only be used with supported backup applications and operating systems. (In firmware version 3.3.0 and higher, all data types within the supported backup application and operating system matrix will deduplicate.) See http://www.hp.com/go/ebs for more information on backup applications and operating system types supported with HP Accelerated deduplication. Licensing Accelerated deduplication is a licensed feature. Licenses are based on the physical disk capacity of the VLS device. You must install enough deduplication licenses for all disk LUNs. NOTE: You cannot license a partial configuration. The entire capacity of the device must be licensed. There are three licenses available, one for each VLS platform - VLS6000-series, VLS9X00, and VLS12X00. See Table 21 (page 92). Table 21 Required Deduplication Licenses by Platform Platform VLS6000-series Deduplication licenses required One license per MSA20 for 250 or 500 GB drives Two licenses per MSA20 for 750 GB drives Two licenses per MSA20 for 1 TB drives VLS9000-series 7.5 and 10 TB systems One license per base unit One license per expansion kit1 VLS9X00 One license for VLS9200 10 TB capacity Two licenses for VLS9200 20 TB capacity Three licenses for VLS9000 30 TB capacity Four licenses for VLS9000 40 TB capacity VLS12X00-series Gateway One license per 2 TB EVA LUN 1 The VLS9000 7.5 TB system does not require a license for a third expansion kit because the first two expansion kit licenses cover the storage provided by the third kit. Migrating your Existing Backup Data If you are enabling deduplication on an already active VLS, the following process can be used to retain your existing backup data (stored before deduplication was enabled) and gradually overwrite it with new backups that will then be deduplicated. This is because deduplication only works on backups that are stored after deduplication was enabled. After you enable deduplication on your VLS and perform all the preparation steps: 1. Perform your normal backups. 2. Wait one data retention cycle for all the existing virtual cartridges to be expired by the backup application and then rewritten with new backup data. If there are cartridges that would not normally expire, you may need to manually expire them to force them to be reused. At the beginning of the next retention cycle, all of your old backup data should have been overwritten with new backup data that has been deduplicated (freeing up disk space). 3. Once all the existing virtual cartridges have been rewritten and deduplicated, you can extend your retention policy for your backup jobs to take advantage of the deduplication. 92 Accelerated Deduplication

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Supported Backup Applications and Data Types
Accelerated deduplication can only be used with supported backup applications and operating
systems. (In firmware version 3.3.0 and higher, all data types within the supported backup
application and operating system matrix will deduplicate.) See
h
t
tp://w
w
w
.hp
.co
m/go/eb
s
for
more information on backup applications and operating system types supported with HP Accelerated
deduplication.
Licensing
Accelerated deduplication is a licensed feature. Licenses are based on the physical disk capacity
of the VLS device. You must install enough deduplication licenses for all disk LUNs.
NOTE:
You cannot license a partial configuration. The entire capacity of the device must be
licensed.
There are three licenses available, one for each VLS platform – VLS6000–series, VLS9X00, and
VLS12X00. See
Table 21 (page 92)
.
Table 21 Required Deduplication Licenses by Platform
Deduplication licenses required
Platform
One license per MSA20 for 250 or 500 GB drives
VLS6000–series
Two licenses per MSA20 for 750 GB drives
Two licenses per MSA20 for 1 TB drives
One license per base unit
VLS9000–series 7.5 and 10 TB systems
One license per expansion kit
1
One license for VLS9200 10 TB capacity
VLS9X00
Two licenses for VLS9200 20 TB capacity
Three licenses for VLS9000 30 TB capacity
Four licenses for VLS9000 40 TB capacity
One license per 2 TB EVA LUN
VLS12X00–series Gateway
1
The VLS9000 7.5 TB system does not require a license for a third expansion kit because the first two expansion kit
licenses cover the storage provided by the third kit.
Migrating your Existing Backup Data
If you are enabling deduplication on an already active VLS, the following process can be used to
retain your existing backup data (stored before deduplication was enabled) and gradually overwrite
it with new backups that will then be deduplicated. This is because deduplication only works on
backups that are stored after deduplication was enabled.
After you enable deduplication on your VLS and perform all the preparation steps:
1.
Perform your normal backups.
2.
Wait one data retention cycle for all the existing virtual cartridges to be expired by the backup
application and then rewritten with new backup data. If there are cartridges that would not
normally expire, you may need to manually expire them to force them to be reused. At the
beginning of the next retention cycle, all of your old backup data should have been overwritten
with new backup data that has been deduplicated (freeing up disk space).
3.
Once all the existing virtual cartridges have been rewritten and deduplicated, you can extend
your retention policy for your backup jobs to take advantage of the deduplication.
92
Accelerated Deduplication