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JBOD - just a bunch of disks
2U
3U
4U
backup device
open-e joviandss zfs high-availability active-active

At Ahead-IT you can always go for customized storage solutions, whether you are looking for a backup device, a JBOD chassis or a fully configured server, certified for your Open-E.

Certified servers for Open-E JovianDSS ZFS

All the servers in this category are certified for Open-E JovianDSS ZFS software. These storage solutions are ideal for:

  • high-availability virtualization storage target
  • video & big data storage
  • cloud and VDI storage
  • backup
  • R&D

Protocols such as iSCSI, NFS, fiber channel, HTTP sharing, SMB, FTP, FC, cifs and data / volume replication are supported as standard. You can order your basic configuration server online immediately, or choose your options yourself via the user-friendly configurator.

Your storage solution? Best with ZFS NVME read and write caching!

There are currently 3 types of storage on the market. SSDs (solid state drives) - SATA or NVME (even faster SSD on the pci-e bus) have the highest performance and lowest access time, but the price per GB is a lot higher than with SAS and SATA. Thanks to the software in Open-E ZFS, all data is initially written to the fast SSDs or even faster NVME drives. Ditto for read operations, these happen from the main memory and from fast SSD or NVME drives.

The end result is a cheap SATA and SAS storage server with SSD / NVME performance.

Contact us without obligation for more information about storage solutions.

Open-E JovianDSS Storage License Calculator

The Open-E JovianDSS Storage License Calculator is a tool which enables setting up configurations that are proven to be secure and efficient and that are recommended by Open-E.

Please note that despite the Open-E JovianDSS's flexibility some unconfirmed configurations might result in low efficiency and thus to lower security. For your data security, please set up and adjust your configuration exactly to the type of stored data.

Select system type / architecture

Help me choose
Please select system type.

Single node

Simple architecture with one server.

Single node

Drives can be SAS or SATA. When using JBODs, SAS JBODs and SAS cables are required.

Shared storage HA Cluster

Single storage shared between the nodes.

Shared HA Cluster

Common storage (internal, JBODs, JBOFs, etc.), both nodes are directly connected to all storage devices in the cluster at the same time. When using JBODs, SAS JBODs and SAS cables are required.

Non-shared storage HA Cluster

Each node has it's own storage.

Non-shared HA Cluster

Each node has direct access only to its own storage devices. Nodes communicate with each other to access their counterparts' storage. When using JBODs, SAS JBODs and SAS cables are required.

Calculation parameters

Select data group redundancy level

Only "2-way Mirror" and "4-way Mirror" redundancy types are allowed for Non-shared storage HA clusters.

Select calculation mode

Please select one of two calculation methods.

Calculate by required storage capacity

Please fill out fields below.

Calculate by number of disks and data groups

Please fill out fields below.
Please fill out fields below.
Calculate

Calculation results

Zpool storage characteristics

Zpool storage characteristics

Information in this block shows the size of storage before and after the RAID or disk mirroring is applied (for unformatted and formatted storage capacity), as well as the usable data storage capacity and recommended licensed storage capacity.

Important!
For mirrored pools, the recommended license capacity is calculated on the basis of net formatted storage capacity.
For RAID-Z, the recommended license capacity is calculated of the basis of gross formatted storage capacity.

A full explanation of the used values can be found below the calculator.

  • Gross unformatted storage capacity:

    -

  • Net unformatted storage capacity:

    -

  • Gross formatted storage capacity:

    -

  • Net formatted storage capacity:

    -

  • Usable data storage capacity:

    -

  • Recommended license storage capacity:

    -

For mirrored pools recommended license capacity is calculated based on Net formatted storage capacity

More licensing details

For RAID-Z recommended license capacity is calculated based on Gross formatted storage capacity

More licensing details

Zpool data groups

  • Number of data groups:

    -

  • Groups redundancy type:

    -

  • Disks in data group:

    -

  • Total number of disks:

    -

  • Single disk capacity:

    -

  • Disk groups layout:

Please specify calculation parameters first...

Data disk #1
Dots
Parity disk #3

Data disk Data disk

Parity disk Parity disk

Zpool non-data groups

Non data groups do not affect the size of license storage capacity regardless of their amount and capacity.

Add non data groups

Selected zpool non-data groups

  • Write log disks:

    -

  • Read cache disks:

    -

  • Spare disks:

    -

Additional pool information

Zpool capacity efficiency

The ratio of usable capacity to total physical capacity in pool. 80% means that 8 out of 10 TB is usable

  • Zpool capacity efficiency

    %

0%

100%

NR%

Zpool Performance Rating

The performance Rating demonstrates the amount of effective performance when compared to single disk performance.
Example: A performance index of 4.6 is equal to the performance of 4.6 single disks without redundancy or striping.

Important: Zpool Performance Rating does not equal overall system performance as it is accelerated significantly by cache and by random I/O into sequential I/O conversion.

However, it may be important with sustained I/O. With sustained I/O, the pool that consists of 2 data groups is about twice faster than the pool with a single data group. Also, disk replacement or scrub speed scales with Zpool Performance Rating.

Performance rating does not take into account write log and read cache disks.

Read Performance Rating:

0.0 x single disk

Write Performance Rating:

0.0 x single disk

Expected annual zpool reliability

Expected annual zpool reliability

This parameter shows the level of expected reliability during a one year of typical zpool usage. To calculate it's value several factors were taken into account: expected reliability of the hard drive model and series as provided by the manufacturer and the redundancy level of the zpool. Values of this parameter below 99.0% are considered to be dangerous for the integrity of the data and such pools should not be deployed in any production environment.

The expected period of time for a year when zpool works in a reliable way, given the configuration and the possiblity of disk failure.

00.0%

Not recommended! Storage solutions with expected annual reliability below 99.0% should not be considered for any production deployment!

The calculation is based on the following parameters:

Zpool configuration

  • Number of datagroups:

    -

  • Amount of disks in data group:

    -

  • Amount of parity disks:

    -

Zpool reliability parameters

  • Mean Time To Repair (MTTR)2 in days:

    -

  • Mean Time Between Failures (MTBF)3 in hours:

    -

Change parameters

You can use the default zpool reliability parameters or enter your own based on data provided by the disks vendor. More precise data make the result more accurate. Parameters description.

Parameters description

Mean Time To Repair (MTTR)

MTTR parameter represents the average time required to repair a failed disk.

Mean Time Between Failures (MTBF)

MTBF is the predicted elapsed time between failures during normal system operations.

Annual Failure Rate (AFR)

Annual Failure Rate is the parameter that represents the same information as MTBF, but expressed as a percentage. It is the probability of a disk failing during a single year. Which value will be available about specific disk depends on a disk vendor.

Recommended licenses

Request quote from Open-E partner or Buy online

Required disks

  • Disks in data group:

    -

  • Write log disks:

    -

  • Read cache disks:

    -

  • Spare disks:

    -

  • Total number of disks:

    -

Download calculations and pool information as PDF

Gross unformatted storage capacity

The unformatted capacity of all disks, before RAID or disks mirroring is applied.

Net unformatted storage capacity

The unformatted capacity of all disks, after RAID or disks mirroring is applied.

Gross formatted storage capacity

The formatted capacity of all disks, before RAID or disks mirroring is applied. It is used to calculate the licensed capacity for RAID Z-1, Z-2 and Z-3.

Net formatted storage capacity

The formatted capacity of all disks, after RAID or disks mirroring is applied. This capacity is used to calculate the licensed capacity for mirrored arrays.

Usable data storage capacity

The actual usable capacity that is exported to the storage client. It is the result of multiplying net formatted storage capacity with the pool max used capacity factor.

Pool max used capacity factor

Open-E JovianDSS creates metadata to write and read the stored information, and it needs free space to work with the stored data and use features such as copy-on-write and snapshots. This is an estimated value of how much space should be reserved for these purposes.

1 Formatted storage capacity is shown in TiB (240 byte units), the same way operating systems calculate it. Hard drive manufacturers use TB (1012 byte units) based on the required license capacity. Because of that a normal capacity, e.g. formatting a 1TB hard disk will result in 931 GB space on drive, despite the 1000 GB claim on the label. More info in the article on our blog.

2 MTTR (Mean time to repair) represents the average time required to repair a failed disk.

3Mean Time Between Failures (MTBF) is the predicted elapsed time between disks failures during normal system operations.

Pool performance Index

The disks in a data group work in unison, which means that their effective performance is the same as one disk, no matter how many there are. Additionally, more computing power is required when more data groups are used in a pool. The Performance Index demonstrates the amount of effective performance when compared to single disk.
Example: A performance index of 4.6 is equal to the performance of 4.6 single disks without redundancy or striping.

Learn more about ZFS Pool design »

Open-E JovianDSS Storage License Calculator

x

Select system type / architecture

Please select system type.

Single node

Simple architecture with one server.

Single node

Drives can be SAS or SATA. When using JBODs, SAS JBODs and SAS cables are required.

Shared storage HA Cluster

Single storage shared between the nodes.

Shared HA Cluster

Common storage (internal, JBODs, JBOFs, etc.), both nodes are directly connected to all storage devices in the cluster at the same time. When using JBODs, SAS JBODs and SAS cables are required.

Non-shared storage HA Cluster

Each node has it's own storage.

Non-shared HA Cluster

Each node has direct access only to its own storage devices. Nodes communicate with each other to access their counterparts' storage. When using JBODs, SAS JBODs and SAS cables are required.

Select data group redundancy level

Please select Redundancy Level.

NO REDUNDANCY

1 disk per group

Data disk

There are no parity disks, the total capacity equals the capacity of all disks.

NO REDUNDANCY

This redundancy level is not allowed for selected system architecture.

A group consists only of a SINGLE disk. This configuration in scope of the Pool behaves as a regular RAID-0.

The "No redundancy" configuration DOES NOT accept any disk failures. This configuration should not be used for mission critical applications at all!

It is also recommended not to exceed 8 of SINGLE disks in the Pool because a single disk damage results in the destruction of the whole Pool. The chances of suffering disk failures increase with the number of disks in the Pool.

Important
The pool performance with SINGLE drive in each group is the highest possible and is increasing with the number of groups (disks) in the pool. For mission critical applications, it is recommended to use RAID-Z2 or RAID-Z3, or 3-way mirror instead of "No redundancy".

This configuration can be used with Hardware RAID volumes where redundancy is preserved on a hardware level.

Suitability for mission critical solutions:

2-WAY MIRROR

2 disks in a group

Data disk NODE A

Parity disk NODE B

Data disk Parity disk

1 disk is a parity disk. Total capacity equals the capacity of 1 disk.

2-WAY MIRROR

The chances of suffering multiple disk failures increase with number of MIRRORs in the Pool.

The 2-WAY MIRROR accepts single disk failure only per MIRROR group.
MIRRORs can be used for mission critical applications, but it is recommended not to exceed 12 MIRRORs in the Pool and to avoid HDDs bigger than 4TB (recommended up to 12*2=24 disks for mission critical applications and 24*2=48 disks for non-mission critical applications in the pool).

Note, the pool performance is increasing with number of MIRRORs in the pool. For mission critical applications and using disks bigger than 4TB or more than 12 groups, it is recommended to use 3-way MIRRORs or RAID-Z2 or RAID-Z3.

Suitability for mission critical solutions:

3-WAY MIRROR

3 disks in a group

Data disk Parity disk Parity disk

2 out 3 disks are parity disk. Total capacity equals the capacity of 1 disk.

3-WAY MIRROR

This redundancy level is not allowed for selected system architecture.

The chances of suffering multiple disk failures increase with number of MIRRORs in the Pool.

The 3-WAY MIRROR accepts up to two disks failures per 3-WAY MIRROR group.
3-WAY MIRRORs can be used for mission critical applications, but it is recommended not to exceed 16 MIRRORs in the Pool and to avoid HDDs bigger than 10TB (recommended up to 16*3=48 disks for mission critical applications in the pool and 24*3=72 disks for non-mission critical applications in the pool).

Note, the pool performance is increasing with number of MIRRORs in the pool. For mission critical applications and using disks bigger than 10TB, it is recommended to use RAID-Z3.

Suitability for mission critical solutions:

4-WAY MIRROR

4 disks in a group

Data disk Parity disk NODE A

Parity disk Parity disk NODE B

Data disk Parity disk Parity disk Parity disk

3 disks out of 4 are parity disks. Total capacity equals the capacity of 1 disk.

4-WAY MIRROR

The chances of suffering multiple disk failures increase with number of MIRRORs in the Pool.

The 4-WAY MIRROR accepts three disks failure per MIRROR group.
The 4-WAY MIRROR is recommended for METRO Cluster that can be used for mission-critical applications.

It is also recommended not to exceed 24 of 4-WAY MIRROR groups in the Pool because the single group damage results with the whole Pool destruction (recommended up to 24*4=96 disks for mission-critical applications in the pool). HDDs bigger than 16TB should be avoided.

Note, the pool performance is increasing with number of MIRRORs in the pool.

Suitability for mission critical solutions:

RAID-Z1

3-8 disks in a group

Data disk Dots Data disk Parity disk

1 disk in a data group may fail. Total capacity equals the sum of all disks
minus 1.

RAID-Z1

This redundancy level is not allowed for selected system architecture.

The chances of suffering multiple disk failures increase with number of disks in the RAID-Z1 group.

The RAID-Z1 accepts single disk failure only per RAID-Z1 group.
The RAID-Z1 can be used for NON-mission critical applications and it is recommended to not exceed 8 disks per group and to avoid HDDs bigger than 4TB.

It is also recommended not to exceed 8 RAID-Z1 groups in the Pool because the single group damage results with the destruction of the whole Pool (recommended up to 8*8=64 disks for non-mission critical applications in the pool).

Note, the pool performance is doubled with 2 * RAID-Z1 with 4 disks each comparing to single RAID-Z1 with 8 disks. For mission critical applications, it is recommended to use RAID-Z2 or RAID-Z3 or 3-way mirrors instead of RAID-Z1.

Suitability for mission critical solutions:

RAID-Z2

4-24 disks in a group

Data disk Dots Data disk Parity disk Parity disk

2 disks in a data group may fail. Total capacity equals the sum of all disks minus 2.

RAID-Z2

This redundancy level is not allowed for selected system architecture.

The chances of suffering multiple disk failures increase with number of disks in the RAID-Z2 group.

The RAID-Z2 accepts up to two disks failure per RAID-Z2 group.
The RAID-Z2 can be used for mission critical applications.

It is recommended not to exceed 12 disks per group for mission critical and 24 disks for NON-mission critical applications. It is also recommended to not exceed 16 of RAID-Z2 groups in the Pool because the single group damage results with the destruction of the whole Pool (recommended up to 16*12=192 disks for mission critical applications and 16*24=384 disks for non-mission critical in the pool). HDDs bigger than 16TB should be avoided.

Note, the pool performance is doubled with 2 * RAID-Z2 with 6 disks each comparing to single RAID-Z2 with 12 disks. If 3 disks failure per RAID group is required, it is recommended to use RAID-Z3.

Suitability for mission critical solutions:

RAID-Z3

5-48 disks in a group

Data disk Dots Data disk Parity disk Parity disk Parity disk

3 disks in a data group may fail. Total capacity equals the sum of all disks minus 3.

RAID-Z3

This redundancy level is not allowed for selected system architecture.

The chances of suffering multiple disk failures increase with number of disks in the RAID-Z3 group.

The RAID-Z3 accepts up to three disks failure per RAID-Z3 group.
The RAID-Z3 can be used for mission critical applications.

It is recommended not to exceed 24 disks per group for mission critical and 48 disks for NON-mission critical applications. It is also recommended to not exceed 24 of RAID-Z3 groups in the Pool because the single group damage results with the whole Pool destruction (recommended up to 24*24=576 disks for mission critical applications and 24*48=1152 disks for non-mission critical in the pool). HDDs bigger than 16TB should be avoided.

Note, the pool performance is doubled with 2 * RAID-Z3 with 12 disks each comparing to single RAID-Z3 with 24 disks.

Suitability for mission critical solutions:

Data disk Data disk Parity disk Parity disk

Learn more about data redundancy in ZFS

The redundancy level sets the number of parity disks in a data group. This number specifies how many disks may fail without losing operation of the data group. Higher parity levels require more calculation from the system, which increases redundancy at the cost of performance.

RAID-Z is a data parity distribution scheme like RAID-5, but uses dynamic stripe width: every block is it's own RAID stripe, regardless of block size, resulting in every RAID-Z write being a full-stripe write. RAID-Z is also faster than traditional RAID-5 because it does not need to perform the usual read-modify-write sequence.

Select calculation mode

Please select one of two calculation methods.

Calculate by required storage capacity

Select the capacity of disks you want to use in your system and the total size of usable capacity. The Storage License Calculator will automatically select the smallest amount of disks with recommended disks per data group to reach the demanded usable storage capacity.

Please fill out fields below.
TiB1
How much storage do you require or plan to use
TB
The RAW unformatted size of a single disk as provided by the disk vendor. Decimal values (comma separated) are allowed.

1Storage capacity is shown in TiB (240 byte units), the same way operating systems calculate it. Hard drive manufacturers use TB (1012 byte units) based on the required license capacity. Because of that a freshly formatted hard disk or RAID array volume is smaller than the nominal capacity, e.g. formatting a 1TB hard disk will result in 931 GB space on drive, despite the 1000GB claim on the label. More info in the article on out blog.

Calculate by number of disks and data groups

Select how many data groups are in your system and how many disks should be in each data group. The Storage License Calculator will automatically calculate the usable storage capacity.

Please fill out fields below.
Please fill out fields below.
TB
The RAW unformatted size of a single disk as provided by the disk vendor. Decimal values (comma separated) are allowed.
The number of disks that will be used in each data group. Each redundancy level has a minimum and recommended maximum number of disks.
The number of data groups that will be used in the pool. The data is striped over all groups by Open-E JovianDSS.
Apply & Close Cancel

Add non-data groups

x

Write log disks

A storage area on data disks that temporarily holds synchronous writes until they are written to the zpool. Stored on separate media from the data, typically on a fast device such as a SSD.

Number of disks:

Capacity of each disk:

GB

Read cache disks

Used to provide an additional layer of caching between main memory and disk. For read-heavy workload, using cache devices allows much of the work to be served from low latency media.

Number of disks:

Capacity of each disk:

GB

Spare disks

Spare disks are drives that are kept on active standby for use when a disk drive fails. The function enables spare disks to be used for any data group. It should be disks with a capacity equal or more than disks in data groups.

Number of disks:

Apply Cancel

Zpool reliability parameters

x

Mean Time To Repair

Mean Time To Repair (MTTR) represents the average time required to repair a failed disk.

days

Disks reliability

Mean Time Between Failures (MTBF) is the predicted elapsed time between disks failures during normal system operations.

Annual Failure Rate (AFR) is the same value calculated as probability of a disk failing during a single year.

MTBF

hours

AFR

%
Apply Cancel

ZFS Pool design details

x

The Pool
A virtual storage pool is used by Open-E JovianDSS to control its data groups. The pool treats each data group as single device. This means that performance of the pool is dependent on the amount of groups and not the amount of total disks. For high performance installations, mirrors with 2 or 3 disks in each data group are recommended. In normal scenarios, redundancy levels Z-1, Z-2 and Z-3 are used to increase the pools capacity efficiency. Thanks to RAM and SSD Caching, enough performance for typical scenarios can still be achieved.

Data groups
Data groups are virtual devices that consist of any amount of HDDs or SSDs. It is very important to use the same disks for the whole pool. Data stored in the pool, is striped evenly over all data groups in order to maximize performance. Redundancy is provided by parity disks within each data group. Their amount is determined by the redundancy level. The number of parity disks equals the amount of disks that are allowed to fail within a data group without losing data.

Non-data groups
These groups are not included in the Storage License Calculator, because they don't affect the license's required storage capacity. Non-data groups are disks in read cache, write log and spares. Typically, SSDs are used for read cache and write log, to increase the systems overall performance. Spare disks are identical to the disks in the data group and available in the pool to replace faulty disks. None of these are used to store the original data, and are therefore not licensed by Open-E JovianDSS.

Available Support Licenses

x

1 year up to 16TB Standard Support License (SKU: 1853)
1 year up to 16TB Premium Support License (SKU: 1855)
1 year up to 16TB 24/7 Support License (SKU: 1857)

1 year 20 to 128TB Standard Support License (SKU: 1877)
1 year 20 to 128TB Premium Support License (SKU: 1879)
1 year 20 to 128TB 24/7 Support License (SKU: 1881)

1 year 132 to 512TB Standard Support License (SKU: 1793)
1 year 132 to 512TB Premium Support License (SKU: 1794)
1 year 132 to 512TB 24/7 Support License (SKU: 1795)

1 year over 512TB Standard Support License (SKU: 1901)
1 year over 512TB Premium Support License (SKU: 1903)
1 year over 512TB 24/7 Support License (SKU: 1905)

3 years up to 16TB Standard Support License (SKU: 1859)
3 years up to 16TB Premium Support License (SKU: 1861)
3 years up to 16TB 24/7 Support License (SKU: 1863)

3 years 20 to 128TB Standard Support License (SKU: 1883)
3 years 20 to 128TB Premium Support License (SKU: 1885)
3 years 20 to 128TB 24/7 Support License (SKU: 1887)

3 years 132 to 512TB Standard Support License (SKU: 1796)
3 years 132 to 512TB Premium Support License (SKU: 1797)
3 years 132 to 512TB 24/7 Support License (SKU: 1798)

3 years over 512TB Standard Support License (SKU: 1907)
3 years over 512TB Premium Support License (SKU: 1909)
3 years over 512TB 24/7 Support License (SKU: 1911)

JBOD - just a bunch of disks

The JBOD storage enclosure family cover a whole series of product that supports both LFF (Large form factor, 3.5" drive) and SFF (small form factor, 2.5" drive). Chassis height choice from 2U, 3U to 4U, offer variety from 12 bay (SC826B JBOD) to 90 bay (SC946ED JBOD). Latest SAS3 (12Gb/s) speed SKU satisfy the need of high read and write speed between the server node and JBOD.

The backplane type variety, with both single and dual expander that equipped on the product provide two different type of demand: Provide software define storage certified system as major storage compoent for high availaibity application; or meet the need of continuous data growth, reliability and energy efficiency, the JBOD storage enclosure series provide a "start small grow big" solution for expand the data capacity.

System is easy to manage via IPMI port with SNMP for remote system power on/off and system monitoring. The whole series feature Titanium / Platinum level high efficiency power supplies.

2U
Stock
Product
Dealer price [ex]
Supermicro CSE-216BE1C-R741JBOD: 2U Storage JBOD Chassis with capacity 24 x 2.5" hot-swappable HDDs bays Cloud Backup, Data Replication, or High Density Archive Storage Applications
€ 1.490,52
Custom build now
Supermicro CSE-826BE1C-R741JBOD: 2U Storage JBOD Chassis with capacity 12 x 3.5" hot-swappable HDDs bays Cloud Backup, Data Replication, or High Density Archive Storage Applications
€ 1.148,47
Custom build now
SUPERMICRO CSE-826SE1C-R1K02JBOD Extreme High Density Storage Chassis support 24x (12 front + 12 middle) 3.5" SAS/SATA 12Gb/s Hot-Swap Bays Simply Double High Density JBOD Storage Enclosure
€ 3.206,55
Custom build now
3U
Stock
Product
Dealer price [ex]
Supermicro CSE-836BE1C-R1K03JBOD: 3U Storage JBOD Chassis with capacity 16 x 3.5" hot-swappable HDDs bays Cloud Backup, Data Replication, or High Density Archive Storage Applications
€ 1.357,20
Custom build now
4U
Stock
Product
Dealer price [ex]
Supermicro CSE-417BE1C-R1K23JBOD: Maximum drives per enclosure: 72x (48 front + 24 rear) 2.5" hot-swap HDD bays for server chassis Extremely high-density 4U storage server chassis (saves 2U space)
€ 2.800,81
Custom build now
Supermicro CSE-847E1C-R1K28JBOD: 44x (24 front + 20 rear) 3.5" hot-swap SAS/SATA drive bays supporting SAS3/2 or SATA3 HDDs with 12Gbps throughput Cloud Backup, Data Replication, or High Density Archive Storage Applications
€ 2.092,43
Custom build now
SUPERMICRO CSE-847E2C-R1K28JBOD BLACK 44x (24 front + 20 rear) 3.5" hot-swap SAS drive bays supporting SAS3/2 HDDs with 12Gbps throughput
€ 2.814,13
Custom build now
SUPERMICRO CSE-946SE1C-R1K66JBOD Extreme High Density and High Capacity Storage Chassis support 60 x 3.5" Top Loading SAS/SATA 12Gb/s Hot Swapping HHD/SSD Bays
€ 6.581,77
Custom build now
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