IT knowledge hub

Storage / NAS / SAN

Company storage: Rsid, SMART, NAS, SMB/NFS, iSCSI, MPIO, LUN, SAN, ZFS, LVM, PORTOS, capacity and performance

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Storage / NAS / SAN Center

Storage diagnostics for RAID, SMART, NAS, SMB, NFS, iSCSI, MPIO, ZFS, LVM, capacity, latency and restore validation.

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Computer calculators

Free computers for network, Rsid, storage, bandwidth, SLA, logs, migration and computer dimensioning

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Printers / Scan / SMB Center

Printers and Scan Center: Spooler, Drivers, Network Ports, WSD, SMB Scan, SMTP Scan-to-mail, TWAIN, WIA and d, printing servers

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Free IT tools

Use free browser-based IT tools for networking, DNS, Windows, email, security, diagnostics, PDF workflows and day-to-day administration.

Command / script

Analyze Windows volume without restarting

Launches an online file system scan of C drive without immediately planning off-line repair

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Proxmox VE Center

Proxmox VE Center: QEMU, LXC, Cluster, quorum, Corosync, Ceph, ZFS, storage, backups, migration and network

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SSL Center / Certificates / PKI

SSL/TLS analysis and diagnosis: expiration, SAN, certification chain, PEM, CSR, AD CS and troubleshooting commands

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Computer quiz

Free network quiz, Windows, Active Directory, cybersecurity, cloud, backup, WordPress and virtualization

Knowledge hub

Home

Free tools, procedures, diagnostics, scripts, dictionary and practical resources for IT technicians, system administrators and SMEs

IT dictionary

vSAN Storage Policy

A vSAN storage policy specifies availability, placement, and performance requirements for virtual machine objects.

IT dictionary

SMB Direct

an SMB extension that uses RDMA for low-latency, high-throughput transfers with low CPU usage

IT dictionary

MPIO

MPIO allows to use several paths to a block storage.

IT dictionary

RAID 0

RAID 0 stripes data across multiple drives to use their capacity and throughput, with no tolerance for a drive failure.

IT dictionary

SMB Multichannel

An SMB feature that uses multiple network connections simultaneously for higher throughput and resilience.

IT dictionary

NAS

Network-connected storage equipment that provides files and other services.

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How to check SMB signing

This BOAI guide provides a structured method for checking smbsign without multiplying unnecessary changes

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How to diagnose a Proxmox cluster without quorum

This BOAI guide provides a structured method for diagnosing a proxmox cluster without quorum

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How to test IPv6 without breaking IPv4

This BOAI guide provides a structured method for testing ipv6 without breaking ipv4 without multiplying unnecessary changes

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How to test a scan to SMB folder

The diagnosis must separate network, authentication and SMB compatibility

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How to diagnose inaccessible SMB sharing

An inaccessible SMB sharing can come from DNS, port 445, the sharing name or permissions. These layers must be tested in this order

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How to size usable RAID capacity

Compare raw capacity, usable capacity, fault tolerance, and smallest-disk impact before purchasing storage.

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NAS vs SAN: What difference?

A NAS primarily provides files on the network. A SAN displays storage blocks to servers, as if they were local drives

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507 — Insufficient storage

The server lacks enough storage to complete the operation.

Troubleshooting

SMB Signing breaks access from legacy equipment

An NAS or multifunction device can no longer connect after SMB hardening

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0x8004231F — VSS insufficient storage

The storage available for VSS shadow copies is insufficient.

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Event ID 129 — Re-Activating a storage device

The storage driver had to re-re-arrange a device or command after a delay

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RAID vs Backup: What Is the Difference?

Understand why RAID improves storage availability but is not a backup. Compare redundancy, version history, accidental deletion, ransomware and recovery planning.

Procedure

Create iSCSI storage with MPIO

Controlled procedure to create iscsi storage with mpio

Procedure

Enable SMB Signing in a Windows environment

Pilot SMB signing on Windows clients and servers, verify effective policy and test file access, NAS, scan-to-folder and application compatibility.

Procedure

Configure secure scanning to an SMB folder

Procedure for setting up, a multifunction to deposit the freeways in an SMB sharing

Procedure

Create a service account dedicated to SMB scanning

Avoid l, use of, a personal user account on multifunctions

Procedure

Handle a saturated Linux filesystem without risky deletion

Procedure to find the cause of a full filesystem before cleaning

Procedure

Renew a TLS certificate without interruption

Renew a TLS certificate by checking names, trust and key association, switching the intended listeners and validating real client access with a valid rollback.

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