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Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10GbE connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Compute Intel® Xeon® D-1541 8-core 2.1 GHz Networking Built-in dual-port 10GbE Memory 16 GB ECC DDR4 Up to 64 GB Scalability Up to 40 drive bays with RX1217(RP) Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver the best results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Learn more Next-generation file system Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots. Learn more Customize to your business The RS4021xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment. -
Double bandwidth Upgrade network bandwidth in minutes by 2x or more with Synology's range of 10GbE NICs. -
SSD cache Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs, or by installing one or more 2.5" SAT5200 SSDs. -
Storage expansion Quickly and easily scale up to 40 drives with two RX1217(RP) expansion units. The ultimate backup solutions - license-free
Keep disaster at bay
Hyper Backup A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage used. Learn more Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Learn more Active Backup Suite Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth and storage used. Learn more
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General Information
Manufacturer: Synology, Inc Manufacturer Part Number: RS4021XS+ Manufacturer Website Address: http://www.synology.com Brand Name: Synology Product Line: RackStation Product Series: XS Product Model: RS4021XS+ Product Name: RackStation RS4021XS+ SAN/NAS Storage System Marketing Information: Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10GbE connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Compute Intel® Xeon® D-1541 8-core 2.1 GHz Networking Built-in dual-port 10GbE Memory 16 GB ECC DDR4 Up to 64 GB Scalability Up to 40 drive bays with RX1217(RP) Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver the best results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Learn more Next-generation file system Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots. Learn more Customize to your business The RS4021xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment. -
Double bandwidth Upgrade network bandwidth in minutes by 2x or more with Synology's range of 10GbE NICs. -
SSD cache Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs, or by installing one or more 2.5" SAT5200 SSDs. -
Storage expansion Quickly and easily scale up to 40 drives with two RX1217(RP) expansion units. The ultimate backup solutions - license-free
Keep disaster at bay
Hyper Backup A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage used. Learn more Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Learn more Active Backup Suite Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth and storage used. Learn more Packaged Quantity: 1 Product Type: SAN/NAS Storage System Storage
Number of Hard Drives Supported: 16
Number of Hard Drives Installed: 0
Number of Solid State Drive Supported: 16
Number of Solid State Drive Installed: 0
Processor & Chipset
Processor Manufacturer: Intel
Processor Type: Xeon
Processor Model: D-1541
Processor Core: Octa-core (8 Core)
Processor Speed: 2.10 GHz
Memory
Standard Memory: 16 GB
Memory Technology: DDR4 SDRAM
Network & Communication
Ethernet Technology: - Gigabit Ethernet
- 10 Gigabit Ethernet
I/O Expansions
Number of Total Expansion Bays: 16
Number of 2.5"/3.5" Bays: 16
Controllers
Controller Type: Serial ATA
RAID Supported: Yes
RAID Levels: 0, 1, 5, 6, 10, Basic, JBOD, RAID F1
Interfaces/Ports
Total Number of USB Ports: 2
Number of USB 3.2 Gen 1 Ports: 2
Network (RJ-45): Yes
Number of Network (RJ-45) Ports: 6
Software
Operating System: DiskStation Manager
Management & Protocols
Protocols: - CIFS
- AFP
- NFS
- FTP
- WEBDAV
- SMB 1.0
- SMB 2.0
- SMB 3.0
- NFSv3
- NFSv4
- NFSv4.1
- iSCSI
- HTTP
- HTTPS
- SNMP
- LDAP
- CalDAV
- DLNA
Power Description
Number of Power Supplies Installed: 2
Maximum Power Supply Wattage: 800 W
Redundant Power Supply: Yes
Physical Characteristics
Height: 5.2"
Width: 19"
Depth: 25.8"
Form Factor: Rack-mountable
Rack Height: 3U
Weight (Approximate): 38.36 lb
Miscellaneous
Country of Origin: Taiwan
 Dedicated account managers are available to assist you with purchasing and presales questions at 877-712-2230 Monday through Friday 8-5pm. What Forms Of Payment Do We Take?We accept all forms of payment including Visa, Mastercard, American Express, Discover, Wire Transfer, and Check in Advance. Purchase orders are accepted and net terms are given based on a credit check. Why Buy From ITO?ITO Solutions, Inc. purpose is to provide you, our client, with best in class technology solutions to help you run your network efficiently by leveraging our integrity, partnerships, and years of experience within the IT industry. Our account managers are here to answer your questions and provide you with solutions very effectively.
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Key Features
Product Description
Securing your business assets The 16-bay RS4021xs+ provides solid data security and lightening-fast performance with over 234K 4K random read IOPS and 6,258 MB/s sequential read throughput. Together with its 8-core processor, ECC memory, advanced snapshot technology, and built-in 10GbE connectivity, the RS4021xs+ can support large multi-user environments while handling data-intensive workloads. Compute Intel® Xeon® D-1541 8-core 2.1 GHz Networking Built-in dual-port 10GbE Memory 16 GB ECC DDR4 Up to 64 GB Scalability Up to 40 drive bays with RX1217(RP) Engineered for service continuity The RS4021xs+ ensures mission-critical data is always available, enabling businesses to deliver the best results, even in the face of disaster. Redundant power Dual PSUs provide protection against a PSU failure or accidental cord removal while hot-swappable fans can be replaced without powering down the system. Maximize service availability Synology High Availability (SHA) pairs two identical units together creating an active-passive cluster with minute-level failover. Learn more Next-generation file system Btrfs prevents data corruption and reduces maintenance overheads with advanced storage technologies and optimized snapshots. Learn more Customize to your business The RS4021xs+ includes two PCIe slots for performance, networking, and storage upgrades enabling it to adapt to any business environment. -
Double bandwidth Upgrade network bandwidth in minutes by 2x or more with Synology's range of 10GbE NICs. -
SSD cache Boost read/write IOPS by up to 16 times by enabling SSD cache with our Synology M.2 NVMe adapter cards and SNV3500 SSDs, or by installing one or more 2.5" SAT5200 SSDs. -
Storage expansion Quickly and easily scale up to 40 drives with two RX1217(RP) expansion units. The ultimate backup solutions - license-free
Keep disaster at bay
Hyper Backup A comprehensive backup and recovery solution for securing data stored on Synology servers. Backup data locally, to another Synology device, rsync server, or cloud-based storage such as Google Drive, Dropbox, S3-compatible destinations, and Synology C2. Deduplication, integrity checks, and incremental transfer technology reduce bandwidth and storage used. Learn more Snapshot Replication Easily schedule flexible point-in-time backups of shared folders and iSCSI LUNs with an RPO as low as 5 minutes and recovery in seconds. Set up replication and failover to other Synology storage systems for fast RTOs and minimal service disruption. Learn more Active Backup Suite Enables administrators to easily backup the entire IT infrastructure to their NAS, including Windows & Linux workstations and servers, file servers, VMware and Hyper-V virtual machines, and Microsoft 365 and Google Workspace accounts. Backups benefit from deduplication, multiversioning, and optimizations to reduce bandwidth and storage used. Learn more
- Number of Hard Drives Supported: 16
- Number of Hard Drives Installed: 0
- Number of Solid State Drive Supported: 16
- Number of Solid State Drive Installed: 0
- Processor Manufacturer: Intel
- Processor Type: Xeon
- Processor Model: D-1541
- Processor Core: Octa-core (8 Core)
- Processor Speed: 2.10 GHz
- Standard Memory: 16 GB
- Memory Technology: DDR4 SDRAM
- Ethernet Technology: Gigabit Ethernet, 10 Gigabit Ethernet
- Number of Total Expansion Bays: 16
- Number of 2.5"/3.5" Bays: 16
- Controller Type: Serial ATA
- RAID Supported: Yes
- RAID Levels: 0, 1, 5, 6, 10, Basic, JBOD, RAID F1
- Total Number of USB Ports: 2
- Number of USB 3.2 Gen 1 Ports: 2
- Network (RJ-45): Yes
- Number of Network (RJ-45) Ports: 6
- Operating System: DiskStation Manager
- Protocols: CIFS, AFP, NFS, FTP, WEBDAV, SMB 1.0, SMB 2.0, SMB 3.0, NFSv3, NFSv4, NFSv4.1, iSCSI, HTTP, HTTPS, SNMP, LDAP, CalDAV, DLNA
- Number of Power Supplies Installed: 2
- Maximum Power Supply Wattage: 800 W
- Redundant Power Supply: Yes
- Height: 5.2"
- Width: 19"
- Depth: 25.8"
- Form Factor: Rack-mountable
- Rack Height: 3U
- Weight (Approximate): 38.36 lb
- Country of Origin: Taiwan
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