Step 4: Install and Configure Lattus A10 Software and NAS Services
Configuring DSS Policy
34
Lattus A10 Access Node Installation Guide
4
Create the Lattus DSS policy. The field values should come from the
Lattus Sizing Tool provided by Quantum Pre-Sales, or obtained from
the customer.
For example:
a
On the
General Settings
tab, specify the following:
i)
Name
:
dss_pol_20_4
ii)
Spread width
:
20
iii)
Storage Safety
(strategy):
4
b
On the
Advanced Settings
tab, specify the following:
i)
Safety Strategy
: Always set to
RepairSpread and Dynamic
Safety
.
ii)
Maximum Superblock Size
: The Superblock size should be
set to
64MiB
(due to the 12-TB limit), but if smaller files are
used, a smaller superblock should be chosen for this name
space. If you need to ingest files over 4 TB, set the Superblock
size to
256MiB
.
iii)
Force dispersion over datacenters
: Always select
Yes
.