How to use this file sharing requirements checklist
A team replacing cloud drives or aging file servers should fix its requirements in writing before it chooses between Nextcloud and Seafile or asks a partner for a quote. Without a written set, every platform looks adequate in a demo, and the gaps appear only after migration starts. This checklist is organized into five groups: function, security, integration, operations and compliance. Each item is written so that it can be answered with a decision, and each needs two things before the work begins: a named owner on the business or IT side, and a verification method that someone can run, such as a test restore, a sample external share, or a directory login check. Read the groups in order, but expect overlap. Storage growth and database choice affect backup targets. Directory integration affects who can create external shares and how offboarding works. Encryption choices affect search, web editing and recovery, so they belong in the same review as retention. Mark each item as mandatory, preferred or not applicable, and record the reason for any exclusion. Reviewers who will sign off on the result, such as the CISO, the data protection lead and the records manager, should see the list before it is finalized, because their objections are cheaper to resolve on paper than after a pilot. This checklist does not prescribe a platform. Some items will point toward one product, and others will be satisfied equally by both. Where a requirement depends on an edition, a support tier or a feature that differs between community and paid offerings, the reader should confirm that item directly with the vendor or the partner in writing. Once the set is agreed and signed, it becomes the basis for the partner's written scope and for the acceptance tests at the end of the rollout.
Functional requirements: users, storage growth, clients and sharing rules
This table lists the functional requirements a file sharing platform must meet, why each one matters, and how to verify it before committing to an edition or build. Use it to turn business needs into a pilot plan. The main takeaway is that edition choice, such as Nextcloud Enterprise's 100-user minimum or Seafile Professional's free tier of up to 3 users, depends on counts you can only confirm by measuring your own population.
| Requirement | Why it matters | Verification step |
|---|---|---|
| Named users and growth | Edition pricing, licensing minimums and support tiers are tied to user counts. Nextcloud Enterprise has a 100-user minimum, while Seafile Professional runs without a license file for up to 3 users. | Export current directory counts by group and department, then model 12-month joiners and leavers. Confirm the edition threshold with the vendor before the scope is written. |
| Concurrent active users | Peak simultaneous sync and web sessions drive PHP workers, database connections and file cache sizing more than total headcount does. | Run a pilot with a sample population of 50 to 100 users (illustrative) and record peak concurrent sessions for two weeks, including a month-end or reporting cycle. |
| Storage today and growth rate | Current file server and cloud drive usage sets the initial object or disk capacity, and growth rate sets the expansion plan. | Scan existing shares and cloud drives for total size, file count and largest folders. Project growth with the data owners, then confirm backend capacity with the storage team. |
| Large files and media | CAD drawings, video and scanned archives behave differently from office documents in upload time, sync load and antivirus scanning. | Test upload and sync of the largest real file types from a sample group on the target network path. Record time to complete and any timeouts. |
| Sync clients per OS | Windows, macOS, Linux, iOS and Android clients differ in supported versions, offline behavior and policy controls. Seafile publishes separate licenses per client, and Nextcloud publishes its own client set. | Build a test matrix of the OS versions in your fleet. Confirm each client version supports your identity method, proxy path and file size limits before rollout. |
| Mobile and unmanaged devices | Personal devices and unmanaged browsers are the usual path for data leakage and need access rules. | Test access from a personal device on an untrusted network to confirm download, preview and offline caching can be restricted by policy. |
| Internal sharing by group | Shares to teams, projects and departments must map to existing groups, or permissions drift from the directory. | Create three sample groups with nested membership and confirm share, edit and delete rights match the expected results for each role. |
| External sharing and guest accounts | Partner and client access is the most common exposure path. Rules must define who can invite guests, to which domains and with what rights. | Document the approval workflow and domain allow list, then test an external invitation from a sample account and confirm it appears in the audit log. |
| Public links, expiry and passwords | Unrestricted public links persist after projects end. Expiry dates and password requirements limit that exposure. | Create links with and without expiry and password, then confirm the server enforces the policy and that expired links stop resolving. |
| Quotas and user limits | Quotas stop a single user or project from consuming shared capacity and make growth forecasts measurable. | Set a test quota on a sample group, fill it, and confirm the user receives a clear message and that administrators see usage by user or group. |
| Office editing | Browser editing of Office files depends on a separate document server, which changes architecture, licensing and the file types that open reliably. | Open a set of representative .docx, .xlsx and .pptx files from the business in the target editor and record any formatting or macro issues. See the document editing hub for options. |
Which security controls to require in writing
Security requirements for file sharing are only useful if they are written down as testable controls before a platform is chosen. The cards below cover the controls regulated buyers most often ask a partner to prove, and they connect through one question: who can read the data, under whose keys, and how do you show it afterward.
Encryption at rest and in transit
Require encryption on every network path between clients, web servers, databases, object storage and backup targets, and document who holds the keys for each layer. Ask whether storage encryption uses keys generated and stored inside your environment or keys held by the hosting provider. Confirm which TLS versions and cipher suites the partner will configure, how certificates are issued from your internal certificate authority, and how key rotation is handled. Transmission security and audit controls under 45 CFR 164.312(e)(1) and 164.312(b) are examples of what regulated buyers test, so confirm which obligations apply to you.
Server-side versus end-to-end encryption
Decide which encryption model applies to each class of data before the design is fixed. Server-side encryption lets the platform index, preview and edit files, but the server can read them. End-to-end encrypted folders keep content unreadable to administrators, but they limit search, web editing and some recovery paths. Write the decision per library or folder class, and ask the partner to demonstrate what breaks for users in each case, including recovery after a lost client key.
Antivirus on uploads with ClamAV
Require malware scanning on every upload path, including sync clients, web uploads, guest uploads and any mounted external storage. ClamAV is the scanner documented for Nextcloud and Seafile Professional Edition, so confirm how the scanner is deployed, how signature updates reach it, and what happens to a file flagged as infected (quarantine, block download, notify the owner). For air-gapped deployments, ask how signature updates are delivered across the gap.
Audit logging and log retention
Require an audit trail that records logins, file access, sharing changes, permission edits and admin actions, with the fields your investigators need (user, object, action, source address, time). Confirm where logs are stored, whether they are forwarded to your SIEM, who can alter or delete them, and how long they are kept. Retention periods are set by your own policies and any applicable rules, so ask the partner to show the log export before sign-off.
Administrator access and role-based permissions
Define which administrator roles exist, what each can view or change, and which actions need a second person or a separate admin account. Require that the platform's administrator role does not automatically grant read access to user files, and confirm how break-glass access is granted, logged and revoked. Role-based permissions are a documented feature of Seafile Professional Edition, so confirm equivalent controls on any candidate platform rather than assuming them.
External sharing controls
Set the rules for guest accounts, public links, link passwords, link expiry, download blocking and sharing domains before users are onboarded. Require the partner to configure these as enforced policy rather than user preferences, and to show how an administrator can find and revoke every external share. Confirm whether sharing can be restricted by group, network or device posture, since those options determine how far external exposure can reach.
How directory and SSO integration shapes the requirements
Your identity design decides who can reach shared files before any file is shared. Nextcloud's LDAP app lets LDAP and Active Directory users appear in Nextcloud and log in with their directory credentials, and Nextcloud also documents OpenID Connect and SAML user authentication backends. Write down which source is authoritative for accounts, which attributes map to Nextcloud groups, and which groups grant access to which folders. Group mapping is where most drift happens: a group that is renamed in the directory can silently remove access or, worse, widen it. Ask the implementation partner to show how group membership is read at login and how often it is refreshed.
Deprovisioning and guest accounts need their own rules. A leaver who is disabled in the directory must also lose sync sessions, app passwords and share links that were created under their account, so confirm how the chosen authentication backend handles disabled users and existing client tokens. External partners usually sit outside the directory, which means they need local guest accounts with their own lifecycle, expiry and review. Decide who approves guests, how their access ends, and whether guest accounts can reshare files. Test a failed identity provider deliberately: block the IdP, then check whether administrators can still log in, whether cached sessions expire, and whether users see a clear error instead of a broken sync client.
Confirm the feature set for your edition before you design around it. The Seafile admin manual documents LDAP and Active Directory integration and several single sign-on options, and it lists SAML 2.0 among Professional Edition features. A design that depends on SAML must therefore be checked against the edition and licence you intend to buy, not against the community documentation. The same applies to Nextcloud, where tiers and support terms are set by the vendor's pricing page. Ask the vendor, in writing, which authentication backends, group sync options and multi-factor methods are included in the edition you will run, and record the answer in the requirements document.
Integration requirements to check with your existing stack
File sharing rarely stands alone. Office editing, legacy shares, object storage, security logging, backup and notifications each depend on decisions made early, and each has an owner who must agree before build starts. The cards below name what to verify for each integration and who in your organization should sign off.
Office editing with ONLYOFFICE or Collabora
Browser-based editing of Word, Excel and PowerPoint files depends on a document server that must reach the file platform over an internal address and must be trusted by it. Confirm which Office formats your users open daily, whether they need co-authoring, and whether the document server can sit inside the same network boundary as the file platform. Check the licence of the editing component against your distribution plans, since ONLYOFFICE Docs is AGPL-3.0 and Collabora Online is MPL 2.0. The application owner for line-of-business documents and the records manager should both sign off on format fidelity.
Existing SMB shares and cloud drives
Mounting Windows shares or cloud drives through external storage lets users keep working in existing locations while you phase them onto the new platform. Verify which shares carry NTFS or group permissions that must be mirrored, which cloud drives hold data that should be migrated rather than mounted, and how service accounts authenticate to each source. Confirm that the mount does not bypass the access rules and audit logging you intend to enforce. The file server owner and the data owner for each share should approve the mapping before cutover.
Object storage backends for Seafile
Seafile can store file data on S3, Ceph or OpenStack Swift backends, which changes where data lives, how it is replicated and how it is restored. Confirm the backend is supported for your Seafile edition, that credentials are scoped to a single bucket or pool, and that the storage team can report capacity growth against your user forecast. Ask whether the backend supports encryption at rest and versioning, and who holds the keys. The storage platform owner and the infrastructure security lead should sign off on the design.
DLP and SIEM log forwarding
Security teams need file access, share creation, download and admin events in the same pipeline as identity and endpoint logs. Verify that audit events can be forwarded in a format your SIEM parses, that event fields include user, object, action and source address, and that log volume will not overwhelm your collectors as the user base grows. For DLP, confirm whether the tool inspects content at the platform, at the endpoint or at the network edge, and which of these can see encrypted files. The SOC lead and the DLP owner should approve the event list and retention period.
Backup tooling and restore targets
Backups must capture both the file store and the database, since neither is useful alone. Confirm whether your enterprise backup product can run consistent snapshots of the data directory and database, or whether the platform's own backup method is required. Verify that backups are stored outside the sync path, that restore tests are scheduled, and that recovery time and recovery point targets are written down before go-live. The backup administrator and the business owner of the data should agree on those targets in writing.
Email notifications and mail relay
Share invitations, expiring link warnings and sync alerts depend on an outbound mail relay that the platform can authenticate to. Confirm which relay will send these messages, whether it requires TLS and a dedicated sending account, and whether internal and external recipients will receive messages with consistent sender domains. Check that notification content does not expose file names or sensitive metadata that your classification policy restricts. The messaging operations team and the email security owner should sign off on the relay configuration and sender policy.
Operational requirements: upgrades, backup, restore and support
This table compares the operating requirements a file sharing platform puts on your team after go-live, from release cadence and upgrade path to backup, restore and support tier. Read each row as a decision you must make and document before the platform carries business data. The main takeaway is that upgrades, restore testing and support coverage are ongoing obligations, so budget for them as recurring work rather than one-time setup.
| Requirement | What to decide or confirm | Evidence to keep |
|---|---|---|
| Release cadence | Nextcloud publishes a new major version every four months and supports each for one year. Plan a recurring upgrade window tied to that cycle. | Dated upgrade calendar with the version in service and its end-of-life date |
| Current supported line | Nextcloud 35 (Hub 26 Summer) was released on 16 September 2026 with end of life in September 2027. Confirm which line you will deploy and when you will move off it. | Version register showing installed release and planned successor |
| Upgrade path | Upgrade one major version at a time, with no skipped releases. Confirm the sequence from your current version to the target before scheduling. | Written upgrade plan listing each intermediate step and rollback point |
| App compatibility | Disable third-party apps until each is confirmed compatible with the target version. Decide who approves re-enabling them. | Compatibility sign-off record for every enabled app |
| Backup before every upgrade | Take a full backup of files and database before each upgrade. Confirm the backup set includes configuration and the data directory. | Backup job logs and a dated record of the pre-upgrade snapshot |
| Recovery time and recovery point targets | Your team must set the recovery time objective and recovery point objective for the platform and for each data class. DeployOpen does not set these for you. | Approved targets signed by the data owner and the service owner |
| Restore testing before go-live | Restore the files and database to a separate environment and confirm users can open, sync and share restored data. Repeat on a set schedule. | Restore test report with date, scope, duration measured and issues found |
| Database and PHP support | Nextcloud 35 recommends MariaDB 11.8 or PostgreSQL 18 and PHP 8.5, with other listed versions supported. Confirm the database and PHP versions your OS and hosting can carry. | Installed component versions compared against the current system requirements |
| Monitoring | Monitor service availability, storage capacity, database health, cron jobs, and antivirus signature freshness. Decide who receives alerts and who acts on them. | Monitoring configuration, alert routing list and on-call roster |
| Support tier | Nextcloud Enterprise offers Standard, Premium and Ultimate tiers with different maintenance lifecycles and support hours. Confirm the tier that matches your change window and response expectations, or whether your partner will provide that cover. | Signed support scope naming the tier, hours, response commitments and upgrade coverage |
Migration requirements: inventory, permissions and cutover
This sequence turns an unmanaged set of file servers, mapped drives and cloud drives into a scoped migration plan with known owners, permissions that have been checked after each wave, and a rollback path if a wave fails. Durations depend on data volume and permission complexity, so confirm them with the partner against a written scope.
Inventory every existing file store
Catalog each SMB file server, NAS, mapped drive, SharePoint or OneDrive library, Google Drive shared drive and personal cloud folder that holds business files. Record the owner, approximate data size, file count, last-accessed pattern, and whether the store is still used. The partner usually leads this with input from the IT team, and the output is a signed-off inventory that lists what is in scope for each wave. Done means every store has an owner who has confirmed it in writing.
Map permissions and assign data owners
Export the existing access model, including Active Directory groups, share and NTFS permissions, cloud sharing links and external collaborators. Map each source group to a target group or Nextcloud share, and flag orphaned accounts, broken inheritance and direct user grants that should become group grants. Each library needs a named business owner who approves the mapped model. Done means every source permission has a mapped target or a documented decision to drop it.
Decide what to migrate and what to mount
For each store, decide whether the content moves into the new platform or stays where it is and is exposed through external storage. Mounting suits data that other systems write to, large engineering archives, or material with legal hold constraints that make moving it risky. Migrating suits active team content that benefits from sync and sharing. Record the decision per store with its reason and the owner who accepted it. Done means the inventory carries a migrate or mount decision for every store.
Phase users onto sync clients in waves
Group users into waves by department or site, starting with a pilot group that is willing to report problems. Each wave installs the desktop and mobile clients, receives the migrated content for its libraries, and gets a short cutover notice that sets the date the old share becomes read only. Confirm with the partner which client versions and deployment method the endpoints support before the first wave. Done means each wave has a documented start, a read-only date for its legacy source, and a named contact for issues.
Validate permissions and content after each wave
After each wave, compare file counts, checksums or sampled hashes, and modification timestamps between source and target. Test access with a sample of accounts from each mapped group, including attempts that should fail, and confirm that external shares resolve to the intended guests. The business owner signs off the wave. Done means the wave report shows matched counts, passed access tests and any exceptions with a remediation owner.
Define the rollback path for each wave
Before a wave goes live, write down how to restore user access to the legacy source, how to reverse the read-only setting, and what happens to changes made in the new platform during the rollback window. Keep the legacy store intact until the wave passes validation and the owner accepts it. Test the rollback on the pilot wave so the runbook is proven, not assumed. Done means each wave has a rollback procedure that the partner and the IT team have both reviewed.
Retire legacy shares on a written schedule
Once all waves pass validation, schedule the decommissioning of old shares and cloud drive sharing links in a change window agreed with the owners. Export final audit or access logs from the legacy platform before shutdown, where the platform allows it, and keep them under the retention rules that apply to your records. Done means the legacy stores are archived or removed, the decommissioning is recorded, and the evidence package is stored with the migration records.
Compliance evidence to collect from the start
Treat every row of the requirements checklist as a claim that an assessor will ask you to prove. Access logs, retention settings, encryption configuration and change records are the evidence most often requested, so decide during requirements gathering where each one will come from, who exports it and how often. A setting that exists only in an administrator's memory or a screenshot taken during the build will not hold up. Record the retention periods, sharing policies, key management model and audit log destinations in the design documents, and keep them under version control with the configuration that enforces them.
Two obligations show how retention and logging requirements arrive. SEC Rule 17a-4(b)(4) requires broker-dealers to preserve originals of communications received and copies of communications sent relating to the business, including inter-office communications, for not less than three years. If client documents shared through the platform fall under that rule, the retention configuration, legal hold process and deletion controls must be designed to meet it, and your compliance team should confirm with counsel which records qualify. The HIPAA Security Rule's audit control specification in 45 CFR 164.312 requires mechanisms that record and examine activity in systems containing ePHI, which means file access, sharing and administrative changes must be logged and reviewed, not just stored.
DeployOpen prepares systems, controls and evidence for compliance assessments, but it does not issue audit reports, attestations or certifications. Independent auditors and certification bodies decide whether your controls meet a given requirement. Ask any implementation partner, including DeployOpen, to define in the written scope which evidence packages they will produce, in what format, and which items remain your responsibility, such as policy approval and access reviews. Confirm log retention on the audit side with your own legal and compliance teams, since the platform does not set your retention obligations for you.
How much work and cost does a file sharing requirements review involve?
What drives the cost of a file sharing requirements review?
The cost of a requirements review is set by how many user groups, storage locations, directories and compliance regimes the written scope has to cover, not by a standard rate. A review that covers one department on one directory is a small exercise, while one that maps several legacy file shares, two identity sources and a regulated data set is a much larger one. Ask any partner to price the review as a fixed scope with named deliverables, such as a requirements document, a sizing model, a migration inventory and an open-issues list. Ask what is excluded, for example whether testing of a pilot or the drafting of policies is included.
How long does a file sharing requirements review take?
The timeline depends on how quickly the internal team can answer questions about users, data and permissions, and on how many systems must be inventoried. The number of interviews, the size of existing shares and the number of approval rounds with data owners usually matter more than the technical design itself. No duration is set in this page's research, so ask the partner for a timeline in the written scope and check which milestones depend on your team's availability. Ask for the review to end with signed-off requirements that feed directly into the implementation plan.
What does our internal team need to provide for the review?
Plan to supply a current user list or a directory extract, read access or an export of Active Directory or LDAP groups, an inventory of existing storage such as file servers and cloud drives, and named data owners who can approve access rules. Teams that also hold records retention schedules or classification labels can shorten the review considerably. Confirm early who on your side has authority to approve storage locations, external sharing rules and encryption decisions, because delays usually come from those approvals rather than from the technical work.
Can our own team write the file sharing requirements without a partner?
Yes, an experienced internal team can draft requirements, especially if it already runs identity and storage services and has access to data owners. The areas most often underestimated are permission mapping from existing shares, sizing of storage and database growth, and the evidence that compliance reviewers will ask for later. A partner's contribution is typically an outside challenge to the draft and a fixed-scope document that the implementation can be priced against. Whichever route you choose, agree on the document's owner and approvers at the start.
How do Nextcloud Enterprise or Seafile subscription costs relate to the requirements?
Subscription costs follow from requirements, so the review should settle the edition before anyone compares prices. Nextcloud Enterprise is sold in Standard, Premium and Ultimate tiers with a 100-user minimum, and list prices start at 71.29 euros per user per year for Standard, 104.99 euros for Premium and 204.75 euros for Ultimate, with lower rates from 200 users, according to Nextcloud's pricing page. Seafile Professional Edition can run without a license file for up to 3 users, and its listed features include SAML 2.0, clustering, multi-tenancy and ClamAV scanning. If your requirements call for support hours or a maintenance lifecycle, those tiers determine whether a subscription is needed at all. Confirm current pricing with each vendor because list prices change.
What changes the quote after the requirements are agreed?
A quote changes when the written scope changes. The most common triggers are a larger user count, additional storage locations, new directory or single sign-on sources, stricter encryption or data location rules, more legacy shares to migrate, and extra compliance evidence. Each change should be recorded as a scope amendment with its effect on deliverables and timeline agreed in writing before work starts. Ask the partner how amendments are priced and whether unused scope is credited.
What recurring costs should the requirements review account for?
Recurring costs usually include storage capacity, backup retention, subscription or support fees for the chosen edition, staff time for administration and upgrades, and any retained support hours. Nextcloud publishes a new major version every four months and supports each for one year, so the requirements should include an upgrade routine that moves one major version at a time. Ask the partner to show how each recurring cost is estimated and which parts are owned by your team after handover.
Does the requirements review cover compliance evidence?
A requirements review can define the controls and evidence your auditors will need, such as access logs, encryption settings and retention rules, but it does not produce an audit report or certification. Independent auditors and certification bodies assess the controls. Ask whether the partner's deliverables include a control-to-requirement mapping that your compliance team can review before implementation begins.
How DeployOpen scopes and delivers a file sharing implementation
DeployOpen plans, implements, customizes, integrates, hardens, backs up, documents and supports self-hosted open-source platforms inside your own infrastructure, including file sync and share on Nextcloud or Seafile. We start from your written requirements on this checklist, then agree scope, deliverables and timelines in writing before any work begins.
How we scope
- Confirm user counts, growth expectations and the storage and database sizing they imply
- Record which existing shares, Google Drive or OneDrive stores need migration or mounting
- Document external sharing rules, directory and SSO sources, and the data location you require
- Agree the written scope, deliverables and timeline before work starts, as a fixed-scope engagement
How we build
- Install and configure the chosen platform in your cloud accounts, data center or air-gapped network
- Connect directory and SSO integration, sync clients, antivirus scanning and office editing as scoped
- Set versioning, trash and retention settings, and backup targets that match your recovery requirements
- Test restores and access controls against the acceptance criteria written into the scope
How we hand over
- Deliver configuration documentation, admin runbooks and the upgrade procedure for one major version at a time
- Provide a mapping of each checklist requirement to the setting, control or evidence that supports it
- Train your administrators on user onboarding, external share management and backup restore steps
- Hand over the backup and restore runbook so your team can run recovery without DeployOpen present
How we support
- Ongoing support, upgrades and continuous testing are available as retainers after handover
- Retainers can cover scheduled major-version upgrades, backup verification and security testing
- Confirm with us which edition, support tier and maintenance lifecycle your scope assumes
- Changes to the agreed scope are documented in writing before additional work is performed
