Adaptec 5325301638 - Snap Server 4500 NAS, Administrator'S Manual

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Expansion Arrays
Chapter 4 Storage Configuration & Expansion 35
how much space each user or group is currently consuming on the volume,
allowing for precise tracking of usage patterns. You can set individual quotas for
any local, Windows domain, or NIS user known to the Snap Server. Group quotas
are available only for NIS groups.
Default Quota Assignments and Ranges
When you add a user to the quota table, the quota defaults to 100 MB; for a group,
the default is 1000 MB. Quotas may range from 1 MB up to the total capacity of the
volume.
How the Snap Server Calculates Usage
In calculating usage, the Snap Server looks at all the files on the server that are
owned by a particular user and adds up the file sizes. Every file is owned by the
user who created the file and by the primary group to which the user belongs.
When a file is copied to the server, its size is applied against both the applicable user
and group quota.
Expansion Arrays
Snap Appliance offers three expansion arrays for increasing the capacity of Snap
Servers.
• The Snap Disk 10 —
The Snap Disk 10 storage subsystem is a 1U expansion array
with four ATA disk drives and a single Serial ATA connector. It ships as a 4-disk
RAID 5 with no hot spare. Up to two Snap Disk 10s can be connected to a Snap
Server 4500.
• The Snap Disk 30SA —
The Snap Disk 30SA storage subsystem is a 3U expansion
array with sixteen Serial ATA disk drives and two fibre channel connectors. It
ships as a JBOD. Up to seven Snap Disk 30SAs can be connected to a Snap Server
15000 or 18000.
• The Snap Disk 32SA —
The Snap Disk 32SA storage subsystem is a 3U expansion
array with sixteen Serial ATA disk drives and two fibre channel connectors. It
ships as a JBOD. Up to seven Snap Disk 32SAs can be connected to a Snap Server
15000 or 18000.
Tip
Details on installing a Snap Disk 10, a Snap Disk 30SA, or a Snap Disk 32SA are
provided in the Snap Disk Quick Start Guide that comes packaged with each
expansion array. The guides are also available for download from the Snap
Appliance website.