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© 2012 VCE Company, LLC. All Rights Reserved.
VCE Vblock™ Systems Series 700 Architecture Overview
Storage layer hardware
• The RAID protection for the tiers in each pool. The following table describes each supported RAID
protection level.
Note:
The RAID protection level for each of the three separate tier-related pools can be different.
More than three pools can exist but only three pools and tiers can exist in a single auto-tiering
FAST policy.
RAID protection level Description
RAID 1
•
A set of mirrored drives.
• Offers the best overall performance of the three supported RAID protection levels.
• Offers robust protection. Can sustain double-drive failures that are not in the same
mirror set.
•
Offers the best write performance since only two IOs are required to perform a single
write.
•
Lowest economy of the three supported RAID levels since usable capacity is only
50% of raw capacity.
•
Supported on EFD, FC, and SATA drives.
RAID 5
•
Block-level striping with a single parity block, where the parity data is distributed
across all the drives in the set.
•
Offers the best mix of performance, protection, and economy.
• Has a higher write performance penalty than RAID 1 because multiple IOs are
required to perform a single write.
•
With single parity, can sustain a single drive failure with no data loss. Vulnerable to
data loss or unrecoverable read errors on a track during a drive rebuild.
•
Highest economy of the three supported RAID levels. Usable capacity is 80% of raw
capacity.
•
EMC best practice for EFD and FC drives. Supported on SATA drives but not
recommended..
RAID 6
•
Block-level striping with two parity blocks, distributed across all of the drives in the
set.
•
Offers increased protection and read performance comparable to RAID 5.
•
Has a significant write performance penalty because multiple IOs are required to
perform a single write.
•
Economy is very good. Usable capacity is 75% of raw capacity or better.
• EMC best practice for SATA drives. Supported on FC drives but not on EFD drives.
There are RAID packs for each RAID protection level/tier type combination. The RAID levels dictate the
number of drives that are included in the packs. The following table lists RAID protection levels and the
number of drives in the packs for each level:
RAID protection level Number of drives per RAID pack
RAID 1
8 (4 + 4)
RAID 5
Should always be in quantities of 8 drives
4 (3 + 1) * 2
or
8 (7 + 1). Requires a minimum of 8 DAEs.
RAID 6 8 (6 drives + 2 parity)
or
16 (14 drives + 2 parity)
- VCE Vblock™ Systems 1
- Series 700 1
- Architecture Overview 1
- Revision history 2
- Table of contents 3
- 4 © 2012 4
- Introduction 6
- Accessing VCE documentation 7
- 10 © 2012 10
- Overview 10
- 12 © 2012 12
- Connectivity overview 13
- Block storage configuration 14
- 700LX block configuration 15
- 16 © 2012 16
- 18 © 2012 18
- Aggregation common services 19
- Compute layer hardware 20
- Compute overview 20
- Reduced cabling 21
- Scaling up compute resources 22
- Bare-metal support 23
- Storage layer hardware 24
- Storage overview 24
- 26 © 2012 26
- EMC RecoverPoint (700LX) 28
- Scaling up storage resources 30
- Storage cabinet expansion 32
- Adding engines 32
- Network layer hardware 33
- Network overview 33
- 700MX network components 34
- Cisco Nexus 7010 IP switches 36
- 700LX network components 37
- Storage switching components 38
- Virtualization components 39
- Virtualization overview 39
- VMware vCenter Server 40
- VCE supported features 41
- Management components 42
- Management software tools 43
- Storage features support 44
- Data protection 45
- 46 © 2012 46
- Backup and recovery 47
- 48 © 2012 48
- 50 © 2012 50
- 52 © 2012 52
- EMC VPLEX 54
- Cluster configurations 54
- Recommended configurations 55
- Single engine 56
- Dual engine 57
- Quad engine 58
- Vblock Series 700 cabinets 59
- Cabinets overview 59
- 700MX cabinet types 59
- CB compute base cabinet 60
- Storage cabinets 60
- Network cabinets 60
- Maximum number of cabinets 61
- 700LX cabinet types 62
- 64 © 2012 64
- Two EMC DMEs 65
- 66 © 2012 66
- Vblock Series 700 models 69
- Power options for 700MX 70
- Power options for 700LX 71
- Vblock Series 700 model MX 72
- Vblock Series 700 model LX 74
- 700LX maximum configuration 75
- Additional references 76
- References overview 76
- Compute components 77
- Network components 78
- Storage components 78
- ABOUT VCE 80
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