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Picture

NEW >90% Utilization - Starting With Just Two Server Nodes 

Start with only two storage nodes and expand to PB, Powered by XD Mode

Powered by new SCALA XD mode support, SCALA Systems can now start with 2 storage nodes, and scale out capacity and performance to over PB of storage, while increasing redundancy. 
Picture

New XD modes, N+M code for advance disk and node protection

The new XD Mode raises the disk and node redundancy when adding new storage nodes to the SCALA system. You can start with only two storage nodes with disk protection only and upgrade to node protection at a later time. The new SCALA XD mode will dynamically change the algorithms for disk protection and node protection once the minimum requirement is met.

XD mode supports N+M protection schemes, where M is number of disk storing data, and N the allowable number of failures. You data is spread across (N) from 2, 4, 8, 16, while allowable disk failures(M) from 1 to 4 disks. There are total of 14 combination of N+M, and provides the user the flexibility of various degrees of performance and capacity utilization. 
XD Protection Mode
(min. 2 nodes)
 Number of Disk Span (N)
Disk Failure Allowed (M)
Min. Node to Allow Node Failure
Node Failure Allowed
2+1
2
1
3
1
2+2
2
2
4
2
4+1
4
1
5
1
4+2
4
2
6
2
4+3
4
3
7
3
4+4
4
4
8
4
8+1
8
1
9
1
8+2
8
2
10
2
8+3
8
3
11
3
8+4
8
4
12
4
16+1
16
1
17
1
16+2
16
2
18
2
16+3
16
3
19
3
16+4
16
4
20
4

Over 90% Storage Utilization Starting with 2 nodes

New XD mode allows multiple N+M protection mode even with only 2 nodes. It allows up to more than 90% disk utilization to balance  performance and protection. XD Mode is a flexible setting that can be changed at anytime to fit your current application or user needs.
​XD Protection Mode
(min. 2 nodes)
Storage Utilization
Performance
Redundancy
2+1
66%
Higher
Balanced
2+2
50%
Balanced
Higher
4+1
80%
Highest
Balanced
4+2
66%
Higher
High
4+3
57%
High
Higher
4+4
80%
Balanced
Highest
8+1
88%
​Highest
​Balanced
8+2
80%
Higher
​High
8+3
72%
High
​Higher
8+4
66%
Balanced
Highest
16+1
94%
Highest
​Balanced
16+2
88%
Higher
​High
16+3
84%
High
​Higher
16+4
80%
Balanced
​Highest

Flexible assign different XD mode on Different folder

SCALA files systems allow assign different folder for different N+M protection scheme, provide maximum flexibility for administrator.
Picture

Instant Online Expansion - No Risky and Lengthy Rebuild Times

SCALA files systems is designed for expansion. There are no longer lock-in to assigned number of disks as RAID setup. SCALA file systems dynamically increase capacity for newly added storage node or hard drives without lengthy wait time. 
Picture

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​
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  • Home
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