iStorage SSDs & HDDs

74 items

Manufacturer:

iStorage diskAshur DT3 HDD 26TB
Version: Europe
Capacity: 26 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4910348 Manufacturer no.: IS-DT3-256-26000-F
€ 1.534,00
Gross price: € 1.840,80 incl. € 306,80 VAT
iStorage diskAshur DT2 HDD 26TB
Version: Europe
Capacity: 26 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4910341 Manufacturer no.: IS-DT2-256-26000-C-G
€ 1.527,00
Gross price: € 1.832,40 incl. € 305,40 VAT
iStorage diskAshur DT3 24TB HDD
Version: Europe
Capacity: 24 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835374 Manufacturer no.: IS-DT3-256-24000-F
€ 1.425,00
Gross price: € 1.710,00 incl. € 285,00 VAT
iStorage diskAshur DT3 22TB HDD
Version: Europe
Capacity: 22 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835372 Manufacturer no.: IS-DT3-256-22000-F
€ 1.329,00
Gross price: € 1.594,80 incl. € 265,80 VAT
iStorage diskAshur DT3 20TB HDD
Version: Europe
Capacity: 20 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835371 Manufacturer no.: IS-DT3-256-20000-F
€ 1.209,00
Gross price: € 1.450,80 incl. € 241,80 VAT
iStorage diskAshur DT3 18TB HDD
Version: Europe
Capacity: 18 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835370 Manufacturer no.: IS-DT3-256-18000-F
€ 1.101,00
Gross price: € 1.321,20 incl. € 220,20 VAT
iStorage diskAshur DT3 14TB HDD
Version: Europe
Capacity: 14 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835369 Manufacturer no.: IS-DT3-256-14000-F
€ 991,99
Gross price: € 1.190,39 incl. € 198,40 VAT
iStorage diskAshur DT3 12TB HDD
Version: Europe
Capacity: 12 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835367 Manufacturer no.: IS-DT3-256-12000-F
€ 844,99
Gross price: € 1.013,99 incl. € 169,00 VAT
iStorage diskAshur DT3 8TB HDD
Version: Europe
Capacity: 8 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835363 Manufacturer no.: IS-DT3-256-8000-F
€ 583,99
Gross price: € 700,79 incl. € 116,80 VAT
Delivery from 12. December.
Only a few items left in stock.
iStorage diskAshur DT3 4TB HDD
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835362 Manufacturer no.: IS-DT3-256-4000-F
€ 410,99
Gross price: € 493,19 incl. € 82,20 VAT
iStorage diskAshur DT3 2TB HDD
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835356 Manufacturer no.: IS-DT3-256-2000-F
€ 267,99
Gross price: € 321,59 incl. € 53,60 VAT
iStorage diskAshur PRO 3 16TB SSD
Version: Europe
Capacity: 16 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835298 Manufacturer no.: IS-DAP3-256-SSD-16000-F
€ 4.358,00
Gross price: € 5.229,60 incl. € 871,60 VAT
iStorage diskAshur PRO 3 8TB SSD
Version: Europe
Capacity: 8 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835297 Manufacturer no.: IS-DAP3-256-SSD-8000-F
€ 1.992,00
Gross price: € 2.390,40 incl. € 398,40 VAT
iStorage diskAshur PRO 3 4TB SSD
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835295 Manufacturer no.: IS-DAP3-256-SSD-4000-F
€ 1.255,00
Gross price: € 1.506,00 incl. € 251,00 VAT
iStorage diskAshur PRO 3 2TB SSD
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835294 Manufacturer no.: IS-DAP3-256-SSD-2000-F
€ 704,99
Gross price: € 845,99 incl. € 141,00 VAT
iStorage diskAshur PRO 3 1TB SSD
Version: Europe
Capacity: 1 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835293 Manufacturer no.: IS-DAP3-256-SSD-1000-F
€ 426,99
Gross price: € 512,39 incl. € 85,40 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur PRO 3 512GB SSD
Version: Europe
Capacity: 512 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835291 Manufacturer no.: IS-DAP3-256-SSD-512-F
€ 329,99
Gross price: € 395,99 incl. € 66,00 VAT
iStorage diskAshur PRO 3 5TB HDD
Version: Europe
Capacity: 5 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835288 Manufacturer no.: IS-DAP3-256-5000-F
€ 546,99
Gross price: € 656,39 incl. € 109,40 VAT
iStorage diskAshur PRO 3 4TB HDD
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835286 Manufacturer no.: IS-DAP3-256-4000-F
€ 452,99
Gross price: € 543,59 incl. € 90,60 VAT
iStorage diskAshur PRO 3 2TB HDD
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835282 Manufacturer no.: IS-DAP3-256-2000-F
€ 360,99
Gross price: € 433,19 incl. € 72,20 VAT
iStorage diskAshur PRO 3 1TB HDD
Version: Europe
Capacity: 1 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835281 Manufacturer no.: IS-DAP3-256-1000-F
€ 290,99
Gross price: € 349,19 incl. € 58,20 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur PRO 3 500GB HDD
Version: Europe
Capacity: 500 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4835278 Manufacturer no.: IS-DAP3-256-500-F
€ 246,99
Gross price: € 296,39 incl. € 49,40 VAT
iStorage diskAshur3 16TB SSD Black
Version: Europe
Capacity: 16 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827536 Manufacturer no.: IS-DA3-256-SSD-16000-B
€ 4.155,00
Gross price: € 4.986,00 incl. € 831,00 VAT
iStorage diskAshur3 8TB SSD Black
Version: Europe
Capacity: 8 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827533 Manufacturer no.: IS-DA3-256-SSD-8000-B
€ 1.968,00
Gross price: € 2.361,60 incl. € 393,60 VAT
iStorage diskAshur3 4TB SSD Black
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827532 Manufacturer no.: IS-DA3-256-SSD-4000-B
€ 1.124,00
Gross price: € 1.348,80 incl. € 224,80 VAT
iStorage diskAshur3 2TB SSD Black
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827528 Manufacturer no.: IS-DA3-256-SSD-2000-B
€ 666,99
Gross price: € 800,39 incl. € 133,40 VAT
iStorage diskAshur3 1TB SSD Black
Version: Europe
Capacity: 1 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827525 Manufacturer no.: IS-DA3-256-SSD-1000-B
€ 368,99
Gross price: € 442,79 incl. € 73,80 VAT
iStorage diskAshur3 512GB SSD Black
Version: Europe
Capacity: 512 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827516 Manufacturer no.: IS-DA3-256-SSD-512-B
€ 272,99
Gross price: € 327,59 incl. € 54,60 VAT
iStorage diskAshur3 5TB HDD Black
Version: Europe
Capacity: 5 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827511 Manufacturer no.: IS-DA3-256-5000-B
€ 470,99
Gross price: € 565,19 incl. € 94,20 VAT
iStorage diskAshur3 4TB HDD Black
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827510 Manufacturer no.: IS-DA3-256-4000-B
€ 408,99
Gross price: € 490,79 incl. € 81,80 VAT
iStorage diskAshur3 2TB HDD Black
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827505 Manufacturer no.: IS-DA3-256-2000-B
€ 313,99
Gross price: € 376,79 incl. € 62,80 VAT
Delivery from 12. December.
Only a few items left in stock.
iStorage diskAshur3 1TB HDD Black
Version: Europe
Capacity: 1 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827504 Manufacturer no.: IS-DA3-256-1000-B
€ 243,99
Gross price: € 292,79 incl. € 48,80 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur3 500GB HDD Black
Version: Europe
Capacity: 500 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4827486 Manufacturer no.: IS-DA3-256-500-B
€ 200,99
Gross price: € 241,19 incl. € 40,20 VAT
iStorage diskAshur DT2 HDD 24TB
Version: Europe
Capacity: 24 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4813178 Manufacturer no.: IS-DT2-256-24000-C-G
€ 1.408,00
Gross price: € 1.689,60 incl. € 281,60 VAT
iStorage diskAshur DT2 HDD 22TB
Version: Europe
Capacity: 22 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4767194 Manufacturer no.: IS-DT2-256-22000-C-G
€ 1.220,00
Gross price: € 1.464,00 incl. € 244,00 VAT
iStorage diskAshur Pro2 SSD 16TB
Version: Europe
Capacity: 16 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Mobile
Product no.: 4736262 Manufacturer no.: IS-DAP2-256-SSD-16000-C-G
€ 4.225,00
Gross price: € 5.070,00 incl. € 845,00 VAT
iStorage diskAshur2 SSD 16TB
Version: Europe
Capacity: 16 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4736259 Manufacturer no.: IS-DA2-256-SSD-16000-B
€ 4.108,00
Gross price: € 4.929,60 incl. € 821,60 VAT
iStorage diskAshur DT2 HDD 20TB
Version: Europe
Capacity: 20 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4628286 Manufacturer no.: IS-DT2-256-20000-C-G
€ 1.242,00
Gross price: € 1.490,40 incl. € 248,40 VAT
iStorage diskAshur M2 SSD 2TB
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: Password protection, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4505209 Manufacturer no.: IS-DAM2-256-2000
€ 394,99
Gross price: € 473,99 incl. € 79,00 VAT
Delivery from 12. December.
Only a few items left in stock.
iStorage diskAshur M2 SSD 1TB
Version: Europe
Capacity: 1 TB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: Password protection, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4505207 Manufacturer no.: IS-DAM2-256-1000
€ 280,99
Gross price: € 337,19 incl. € 56,20 VAT
Delivery from 12. December.
Only a few items left in stock.
iStorage diskAshur M2 SSD 500GB
Version: Europe
Capacity: 500 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: Password protection, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4505206 Manufacturer no.: IS-DAM2-256-500
€ 199,99
Gross price: € 239,99 incl. € 40,00 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur M2 SSD 240GB
Version: Europe
Capacity: 240 GB
Connectors: 1 x USB 3.2 Type-C
Colour: Black
Security: Password protection, 256-bit AES-XTS encryption
Application: Mobile
Product no.: 4505204 Manufacturer no.: IS-DAM2-256-240
€ 175,99
Gross price: € 211,19 incl. € 35,20 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur DT2 HDD 18TB
Version: Europe
Capacity: 18 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4497323 Manufacturer no.: IS-DT2-256-18000-C-G
€ 1.107,00
Gross price: € 1.328,40 incl. € 221,40 VAT
iStorage diskAshur2 SSD 8TB
Version: Europe
Capacity: 8 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4418381 Manufacturer no.: IS-DA2-256-SSD-8000-B
€ 1.775,00
Gross price: € 2.130,00 incl. € 355,00 VAT
iStorage diskAshur Pro2 SSD 8TB
Version: Europe
Capacity: 8 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Mobile
Product no.: 4414464 Manufacturer no.: IS-DAP2-256-SSD-8000-C-G
€ 2.040,00
Gross price: € 2.448,00 incl. € 408,00 VAT
iStorage diskAshur DT2 HDD 16TB
Version: Europe
Capacity: 16 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4397996 Manufacturer no.: IS-DT2-256-16000-C-G
€ 1.212,00
Gross price: € 1.454,40 incl. € 242,40 VAT
iStorage diskAshur DT2 HDD 14TB
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-B
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, Kensington standard slot, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Desktop
Product no.: 4397993 Manufacturer no.: IS-DT2-256-14000-C-G
€ 1.108,00
Gross price: € 1.329,60 incl. € 221,60 VAT
iStorage diskAshur Pro2 SSD 2TB
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Grey, Black
Security: PIN-protected with alphanumeric keypad, FIPS 197 Standard, 256-bit AES-XTS encryption, FIPS 140-2 Standard
Application: Mobile
Product no.: 4248617 Manufacturer no.: IS-DAP2-256-SSD-2000-C-G
€ 676,99
Gross price: € 812,39 incl. € 135,40 VAT
Delivery from 10. December.
Only a few items left in stock.
iStorage diskAshur2 4TB SSD
Version: Europe
Capacity: 4 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4248610 Manufacturer no.: IS-DA2-256-SSD-4000-B
€ 1.090,00
Gross price: € 1.308,00 incl. € 218,00 VAT
iStorage diskAshur2 2TB SSD
Version: Europe
Capacity: 2 TB
Connectors: 1 x USB 3.2 Type-A
Colour: Black
Security: PIN-protected with alphanumeric keypad, 256-bit AES-XTS encryption, FIPS 197 Standard
Application: Mobile
Product no.: 4248607 Manufacturer no.: IS-DA2-256-SSD-2000-B
€ 631,99
Gross price: € 758,39 incl. € 126,40 VAT
Delivery from 12. December.
Only a few items left in stock.

Lightning-fast flash memory with SSDs.

SSDs are top-of-the-line when it comes to speed. Developers, designers and advertising agencies rely on them when working with large CAD, image or video files. Built-in SSDs are an absolute necessity if your daily workflows entail intensive data processing on computers. External SSDs, on the other hand, offer distinct benefits for creative teams desiring efficiency within a network. The higher cost of SSDs is compensated by their faster computing speeds, which is influenced by file size and the transfer rates supported by the interfaces. In the corresponding category of our Bechtle online shop, you can choose between internal and external SSDs. Once you’ve made your choice, you can further narrow down the options using additional filters such as performance criteria and interfaces.

Large-capacity hard drives.

Both managers and office staff generate several Gigabytes of data every day—and they want to be able to access this data easily and securely even months later. In this case, hard drives are the best choice, as they provide the best balance of price versus performance. Although storage capacity is key, additional factors must be considered as well, such as security and backup features. For instance, redundant storage through RAID systems is essential for protecting business-critical data. And if you’re often on the road with your notebook, a mobile hard drive may be useful. Find them in our online drive along with internal hard drives and external hard drives. When selecting an internal hard drive, make sure to note whether they’re designed for desktop devices, enterprise use or notebooks.

Retrofitting made easy.

Your company will likely need more storage as it grows or if it expands its scope of activity. Often this can be accomplished by simply upgrading your capacity with SSDs and hard drives, saving you the time and money of replacing your entire computer fleet. We provide a broad range of accessories to help you incorporate hard drives and SSDs into your network flexibly. Choose from adapters, converters, docking stations and enclosures by leading brands, such as HP, Toshiba and Western Digital. The right combination of storage components and accessories will put you in prime position to leverage the growing flood of data—even for big data applications.