4. Disk Drive (2)
(2) Disk Drive Usage
In M-Series products, disk enclosures can include a mix of SSD, SAS HDD and NL-SAS HDDs. M-
Series products provide more flexibility of choices; SAS Disk Drive for mission-critical systems that
require high-performance and non-stop operation or NL-SAS HDD for systems that require low-cost
and the backup with large capacity.
(2-1) NL-SAS HDD
NL-SAS HDD is ideal for the systems that do not require high performance but large capacity at low
cost as follows:
1. Large data sets (Web, Images, Research and development data, E-mail)
2. Disk backup
3. Archive – Data protection (VolumeProtect)
4. Replication between arrays (RemoteDataReplication) – RV (Replication Volume)
5. Replication within the same array (DynamicDataReplication) – RV (Replication Volume)
6. Snapshot (DynamicSnapVolume) – SV (Snapshot Volume)
7. File Server
(2-2) SAS HDD
SAS HDD is excellent in performance, capacity and reliability. It is ideal for mission-critical systems
that require high-performance at low cost as follows:
1. Frequently accessed database
2. Mission-critical applications
(2-3) SSD
SSD is a higher price and higher performance HDD and ideal for the systems as follows:
Database index
Field applications
Example : SAS/NL SAS
■A mix of SAS/Large Capacity HDD (NL-SAS)
■Configuration only large Capacity HDD(NL SAS)
・Large capacity with low-cost for electronic document law and long-term Storage
Support RDR
SAS SAS
NLSAS
SAS
NLSASNLSAS
Tier2
Tier1
SSD SSD
Tier0
※Need PerforOptimizer
SAS
NLSAS
RDR
(M310/M510/M710)
53
NEC Confidential
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