Adaptec 5325301638 Administration Guide - Page 44

RAIDs, Factors in Choosing a RAID Type

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RAIDs space is preconfigured to allocate eighty percent of the RAID for the file system and the remaining twenty percent for snapshots. Drives / RAID Snap Server 18000 Snap Server 15000 Snap Server 4500 Snap Server 4200 Snap Server 14000 Snap Disk 10 Snap Disk 30/32SA 8-disk RAID 5 + hot spare 4-disk RAID 5 (No hot spare configured) 11-Disk RAID 5 + 1 local hot spare 4-disk RAID 5 (No hot spare configured) 16-disk JBOD Volume Snapshot Pool 80% of RAID capacity is allocated to the default volume. 20% of RAID capacity is allocated to the snapshot pool. Allocation Security Shares Share Access Security Model A single share points to the volume. Grants read/write access to all users and groups over all protocols. Windows-style file-level security (can be changed to UNIX) RAIDs RAIDs are created, viewed, edited, and deleted from the Storage > RAID Sets screen of the Administration Tool. Most Snap Servers ship with all disk drives configured as a RAID 5. Before changing the default RAID configuration, consider the following information on the Snap Server's RAID implementation. Factors in Choosing a RAID Type The type of RAID configuration you choose depends on a number of factors: (1) the importance of the data; (2) performance requirements; (3) drive utilization; and (4) the number of available drives. For example, in configuring the four disk drives of the 4500, the decision whether to include a hot spare in the RAID depends on the value you place on capacity vs. high availability. If capacity is paramount, you would use all drives for storage; if high availability were more important, you 30 Snap Server Administrator Guide

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RAIDs
30
Snap Server Administrator Guide
space is preconfigured to allocate eighty percent of the RAID for the file system and
the remaining twenty percent for snapshots.
RAIDs
RAIDs are created, viewed, edited, and deleted from the
Storage > RAID Sets
screen
of the Administration Tool. Most Snap Servers ship with all disk drives configured
as a RAID 5. Before changing the default RAID configuration, consider the
following information on the Snap Server’s RAID implementation.
Factors in Choosing a RAID Type
The type of RAID configuration you choose depends on a number of factors: (1) the
importance of the data; (2) performance requirements; (3) drive utilization; and (4)
the number of available drives. For example, in configuring the four disk drives of
the 4500, the decision whether to include a hot spare in the RAID depends on the
value you place on capacity vs. high availability. If capacity is paramount, you
would use all drives for storage; if high availability were more important, you
Drives / RAID
Snap Server 18000
8-disk RAID 5 + hot spare
Snap Server 15000
Snap Server 4500
Snap Server 4200
4-disk RAID 5 (No hot spare configured)
Snap Server 14000
11-Disk RAID 5 + 1 local hot spare
Snap Disk 10
4-disk RAID 5 (No hot spare configured)
Snap Disk 30/32SA
16-disk JBOD
Allocation
Volume
80% of RAID capacity is allocated to the default volume.
Snapshot Pool
20% of RAID capacity is allocated to the snapshot pool.
Security
Shares
A single share points to the volume.
Share Access
Grants read/write access to all users and groups over all
protocols.
Security Model
Windows-style file-level security (can be changed to UNIX)