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server environments, VNX, VSS, and VNXe arrays in a SAN (FC or iSCSI)
configuration are more practical for the Live DB.
Archive DB
The Archive DB is the long-term storage for XProtect and typically constitutes the
majority of the storage capacity requirement. Moving video from the Live DB to the
Archive DB involves many activities, including optimizing index files for the larger
video repository, and moving the files.
Starting with XProtect Corporate 2013, support for NAS was added and shared
storage provided by an Isilon scale out storage cluster or block storage provided by a
VNX family storage array can be used.
Storage considerations for Live DB and Archive DB
The Live DB can be a VNX, VSS, or VNXe storage array in a SAN configuration. The
Archive DB can be an Isilon scale-out cluster in a NAS configuration or a VNX storage
array in a SAN configuration.
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With the VNX, VSS, or VNXe, both the Live DB and Archive DB can use either FC
or iSCSI protocols. For iSCSI, you can use GigE or 10 GbE NICs.
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When using smaller VNX, VSS, or VNXe arrays with iSCSI, we recommend that the
Live DB and Archive DB reside on different arrays.
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When using FC, Live DB and an FC Archive DB can co-exist on the same VNX
array.
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Arrays such as the VNX5800 can be used with iSCSI for both the Live DB and
Archive DB.
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VNX, VSS, or VNXe storage can be used for:
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LiveDB only
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LiveDB as the first tier in a tiered implementation
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Archive DB as the second tier in a tiered implementation
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For Isilon scale-out storage, NAS can be used with Isilon OneFS
™
7.0 or higher.
Use the default Isilon protection scheme unless the customer needs additional
protection.
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You can use GigE or 10 GbE network interface cards (NICs). Test results for this
solution are based on both GigE and 10 GbE interfaces on the Isilon cluster. By
default, XProtect moves video from the Live DB to the Archive DB using a single
thread. With NAS, you can increase the Archive DB thread count to allow parallel
video file moves within the archive process.
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We recommend you avoid using Isilon storage for the LiveDB storage tier.
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Although it is possible to use the NFS datastores for the Milestone boot drive in a
VMware environment, this configuration with Milestone XProtect has not been
tested in the Dell EMC Surveillance Lab.
Retention periods
A Live DB retention period longer than 24 hours may result in prolonged recording
server restart, as the restart process includes verifying the index files for the retained
video recordings.
For this reason, Milestone recommends that the Live DB retention period be limited to
no more than 24 hours, with a higher frequency preferred. Milestone recommends a
minimum retention period of two hours for the Live DB, although a one hour retention
Configuring the solution
Archive DB 11