Memoria por niveles de VMware: NVMe local haciendo de RAM en un servidor ESX

NVMe standing in for RAM: memory tiering works if half of yours is idle

VMware refines memory tiering in Cloud Foundation 9.1, available since 9.0: cold pages demoted from DRAM to a local NVMe drive so a host ends up with more memory than you bought. What almost nobody quotes is the recommendation VMware itself published on its blog on 6 August: keep active memory below 50% of physical memory. The requirements, the limits, what is known about the 25% of workloads that does not fit today, and why a memory reservation does not get you out of it.

VMware Virtualization Infrastructure

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Vías de tren convergiendo en una aguja sobre balasto de grava, con dos anchos distintos corriendo en paralelo bajo cielo gris

19 Aug 2026 8 min read

Proxmox now runs on Arm. Your x86 machines don't.

On 5 August Proxmox shipped its first official arm64 edition. The headline says there is now a second architecture; the release notes say guests only run on nodes matching their architecture and that live migration only works between equals. What was actually announced, for which hardware, why Windows Server is left out, and why none of this changes your VMware exit plan.

Proxmox Virtualisation Arm

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Interior de un disco duro abierto: el rendimiento real de un OSD de Ceph no lo marca la ficha del fabricante sino el benchmark que midió el propio OSD

13 Aug 2026 7 min read

Ceph does not perform like the datasheet: it performs like the benchmark the OSD ran at boot

Since Ceph Quincy the scheduler for BlueStore OSDs is mClock, and the work ceiling it shares out does not come from the vendor datasheet: it comes from a benchmark each OSD runs at boot. If that measurement is discarded, you are left with 315 IOPS for a spinning disk and 21,500 for a solid-state one, whatever you bought. How to check what your cluster believes, which parameters stopped having any effect, and when the drive really is the problem.

Ceph Storage Proxmox

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Por primera vez el 46% de las cargas de IT corporativa vive en instalaciones de terceros frente al 44% en centros de datos propios, según la encuesta de Uptime Institute de 2026

2 Aug 2026 11 min read

Half of corporate IT now lives off premises. That does not mean it went to the cloud

On 28 July 2026 Uptime Institute published the figure that went around the industry: for the first time, third-party facilities (46%) overtake companies' own data centres (44%). The number is real. The "the cloud won" reading is not: that 46% puts colocation and SaaS in the same box, and they are opposite decisions. And the most interesting part of the report is not in the headline but in the remaining 10%, and in what is happening to kilowatts per rack.

Datacenter Colocation Infrastructure

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Controladores de gestión BMC expuestos en internet: 36.872 servicios IPMI accesibles por UDP 623

30 Jul 2026 8 min read

There is another computer inside your server, and 36,872 of them are on the internet

A scan published on 29 July 2026 found 36,872 management controllers (BMCs) listening on the internet over UDP/623, and 24,650 of them hand out material derived from the account password before anyone logs in. This is not a new CVE: it is CVE-2013-4786, a flaw in the IPMI 2.0 specification itself, dating from 2004, which Dell acknowledges has no patch. The numbers, why a factory password falls in between 32 seconds and one hour, why your EDR will not see it and the six steps to close the management plane of your hardware.

Hardware Datacenter Cybersecurity

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Subida del precio de la memoria DRAM y NAND en 2026 por la demanda de centros de datos de IA

28 Jul 2026 8 min read

AI took the RAM: what to do with your 2026 hardware plan

TrendForce forecast second-quarter contract price rises of 58% to 63% for conventional DRAM and 70% to 75% for NAND. In one quarter, with nothing inside your company to explain it. Why the big cloud providers are hedged by multi-year contracts and you are not, how this lands in your refresh plan, what to check before signing a purchase order, and how long it lasts — with dates.

Hardware Infrastructure Datacenter

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everyWAN Blog

NVMe standing in for RAM: memory tiering works if half of yours is idle

Proxmox now runs on Arm. Your x86 machines don't.

Ceph does not perform like the datasheet: it performs like the benchmark the OSD ran at boot

Half of corporate IT now lives off premises. That does not mean it went to the cloud

There is another computer inside your server, and 36,872 of them are on the internet

AI took the RAM: what to do with your 2026 hardware plan

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