Xincuan 서버 | 엔터프라이즈 서버 하드웨어 공급업체
귀하의 서버에는 32 DIMM Slots. All Populated. Memory Utilization at 94 퍼센트. The Cluster Needs More RAM, Not More Servers.
Every VMware admin knows this moment. The cluster shows 94 percent memory utilization. The budget meeting is in three days. The options are grim: buy another $40,000 섬기는 사람, throttle VM density, or let performance degrade. The Samsung 512GB CXL Memory Module adds a fourth option: plug a PCIe 5.0 card into an empty slot, and the hypervisor sees 512 GB of additional system memory — byte-addressable, NUMA-aware, and managed by the same memory controller that handles DDR5.
기술 사양
| 매개변수 | 사양 |
|---|---|
| 용량 | 512 GB (또한: 256 GB variant) |
| Protocol | CXL 2.0 (유형 3 memory expander), backward-compatible with CXL 1.1 |
| 호스트 인터페이스 | PCIe 5.0 x8 (or x16, 구성 가능) |
| 메모리 기술 | Samsung 1a-class DDR5 DRAM (고밀도, not NAND — true DRAM latency profile) |
| 숨어 있음 (CXL 2.0, local NUMA node) | ~250-300 ns (vs ~90 ns for socket-local DDR5, vs ~140 ns for remote-socket DDR5 on dual-socket) |
| 대역폭 | ~32 GB/s (PCIe 5.0 x8) to ~64 GB/s (x16) |
| 폼 팩터 | PCIe full-height, 반 길이 (FHHL) add-in card |
| 힘 | ~25W 일반, ~40W max |
| ECC | On-module ECC (Samsung in-module error correction, independent of host ECC) |
| RAS Features | Memory sparing, memory mirroring (module-level), patrol scrub, demand scrub |
| 핫플러그 | 지원되지 않습니다. Memory capacity changes require reboot. |
| NUMA | Exposed as a separate NUMA node to the OS. OS memory manager balances allocations. |
| OS 지원 | RHEL 9.2+ (kernel 5.14+ CXL subsystem), SLES 15 SP5+, 우분투 24.04 lts, VM웨어 ESXi 8.0 U2+ (CXL memory tiering in preview) |
| 호환 가능한 CPU | Intel Xeon 4th Gen (CXL 1.1), 제온 6 (CXL 2.0), AMD EPYC 9005 (CXL 2.0) |
| 호환 서버 | Dell R660, R760, R770, R7715, R860, R960, 엑스퓨전 2288H V7, 2488H V7, 5885H V7 (CXL BIOS enabled) |
| 물리적 | Standard PCIe FHHL card, 168 엑스 111 mm |
| 보증 | 3-년도 (서버와 함께) |
CXL Memory vs Adding DIMMs — The Expansion Math
| 대본 | Add DDR5 DIMMs | Add CXL Modules | Winner |
|---|---|---|---|
| Server has empty DIMM slots | 16엑스 64 GB DDR5 = 1 TB added. 비용: ~$8,000. No PCIe slots consumed. | 2엑스 512 GB CXL = 1 TB added. 비용: ~$5,000. 2 PCIe slots consumed. | DR5 (cheaper per GB, no PCIe penalty) |
| Server DIMM slots are FULL | Impossible without replacing server. | 2엑스 512 GB CXL = 1 TB added. 비용: ~$5,000. | CXL (only option) |
| Need > 8 TB total on a 2-socket server | Impossible. 32 DIMM slots x 256 GB = 8 TB ceiling. | 8 TB DDR5 + 2 TB CXL = 10 TB total on a dual-socket server. | CXL breaks the 8 TB ceiling |
When CXL Memory Makes Sense
- VMware clusters at memory saturation. Add CXL modules to existing hosts instead of buying more hosts. 512 GB of CXL memory per host x 10 hosts = 5 TB of additional cluster memory at roughly 60% of the cost of adding two new servers.
- In-memory databases that outgrew the DIMM ceiling. Redis, Memcached, SAP HANA, and Oracle In-Memory that need >8 TB on a dual-socket server. CXL is the only path beyond the 32-DIMM ceiling without moving to a 4-socket R860.
- AI inference with large context windows. LLM inference with 100K+ token context windows consumes VRAM for the model weights and system RAM for the KV cache. CXL memory provides a cost-effective expansion tier for KV cache overflow.
When CXL Memory Does Not Make Sense
- If you have empty DIMM slots. Populate them first. DDR5 is faster and cheaper per gigabyte.
- If your workload is latency-sensitive at the nanosecond level. CXL adds 150-200 ns of latency vs socket-local DDR5. For high-frequency trading, real-time control systems, and OLTP with strict latency SLAs, native DDR5 is the only option.
- If your OS or hypervisor does not support CXL memory tiering. VM웨어 ESXi 8.0 U2 supports CXL memory in preview (not GA). RHEL 9.2+ supports it GA. Check your hypervisor version before ordering.
Xicuan을 통한 소스
We supply Samsung CXL modules pre-installed in Dell and xFusion servers with CXL BIOS enabled. 공장 직접 가격, 3-1년 보증, and free CXL memory planning consultation.
