Sizing Tool
QuantaStor 5 - SAN/NAS Storage Cluster Designer
Server/Cluster Specification
Select the minimum and maximum amount of disk enclosures per cluster. For RAID10 we recommend 2x or more storage enclosures (JBODs) per cluster, RAIDZ2 3x JBODs or more, and for RAIDZ3 choose 4x or more. QuantaStor intelligently provisions Storage Pools to stripe across storage enclosures which in turn provides fault-tolerance and high-availability in the event of a disk enclosure power-outage or failure.
Log devices boost write performance by committing a copy of all data writes to fast NVMe/SSD storage first which enables the system flush data out to HDD devices asynchronously and more efficiently in larger blocks.
Read cache devices act as an SSD extension of the RAM based read cache. Usually the RAM based read cache is sufficient but some use cases like video playback can greatly benefit from the additional read cache capacity.
Our general recommendation is to have a 1:1 ratio where a GB of RAM is added to the server for each TB of usable capacity. For most backup and archive configurations the required RAM requirements are lower and a reduced ratio may be used.
Storage Configuration
Compression % indicates the amount of additional usable capacity is gained due to data compression. If the data is pre-compressed such as images, video or pre-encrypted files set this to 0%.
Reserved free-space (overhead) indicates the amount of space that will not be used in order to avoid performance degradation. Large archive configurations which are generally write-once-read-many can set this to a low value like 5%. Database and server/desktop virtualization storage should set this to a higher value like 20%.
Reserved drive slots indicates the percentage of drive bays that should remain empty for future expansion. This is helpful for starting the cluster with a larger number of servers that are partially populated.
License Summary
QuantaStor Enterprise Edition / Storage Grid License
Rack Summary
Solution Summary
Storage Enclosures
Devices per Enclosure
Data Devices
Write Log Devices
Offload & Cache Devices
Rack Space
Usable Capacity
Usable w/ Compression
Raw Capacity
Pool Count
Pool Capacity(Usable)
Pool Capacity(Raw)
Estimated Power Req
Estimated Power Cost/mo
Estimated HW Cost
HW Price/TB (raw)
MSRP SW Price/TB/yr (raw)
HW+SW+PW/GB/mo (usable)
Server Specification
Disk Enclosure Specification
Device Specification