Excluded Transactions include pre-authentication failures; authentication failures; attempted transactions for storage accounts over their prescribed quotas; creation or deletion of containers, file shares, tables, or queues; clearing of queues; and copying blobs between storage accounts. 1.1 Last updated: April 2016 Release notes: Updated SLA for the newly introduced Blob Storage Accounts with the Cool Access Tier. AI "Read Access Geographically Redundant Storage (RA-GRS) Account" is a storage account for which data is replicated synchronously within a Primary Region and then replicated asynchronously to a Secondary Region. Azure File Storage. If we do not achieve and maintain the Service Levels for each Service as described in this SLA, then you may be eligible for a credit towards a portion of your monthly service fees. "Preview" refers to a preview, beta, or other pre-release version of a service or software offered to obtain customer feedback. Redundancy ensures that your storage account meets the Service-Level Agreement (SLA) for Azure Storage even in the face of failures. We will not modify the terms of your SLA during the initial term of your subscription; however, if you renew your subscription, the version of this SLA that is current at the time of renewal will apply throughout your renewal term. One concern of using another kind of storage provider (table storage in this case) is the impact on our overall service stability. Azure VMs now support Azure Managed Disks, so you can create a virtual machine without the need to create or manage any Azure storage accounts. Managed Disks doesn't have a financially backed SLA because its availability is based on the underlying storage used and the virtual machine it’s attached to. "Failed Storage Transactions" is the set of all storage transactions within Total Storage Transactions that are not completed within the Maximum Processing Time associated with their respective transaction type, as specified in the table below. As you probably know, Azure didn’t provide an SLA for single instance virtual machines: the 99.95% uptime guarantee was only available for at VMs that are part of a availability set or scale set. Azure Blob Storage is the essential foundation of most Azure services. Maximum Processing Time includes only the time spent processing a transaction request within the Storage Service and does not include any time spent transferring the request to or from the Storage Service. Because GRS and RA-GRS Accounts are replicated asynchronously to the Secondary Region, data written to the Primary Region of the storage account will not be immediately available in the Secondary Region. "Claim" means a claim submitted by Customer to 21Vianet pursuant to this SLA that a Service Level has not been met and that a Service Credit may be due to Customer. "Failed Storage Transactions" is the set of all storage transactions within Total Storage Transactions that are not completed within the Maximum Processing Time associated with their respective transaction type, as specified in the table below. Blob Storage Durability. Connecting the dots in cloud dynamics. You can query the Geo Replication Lag for a storage account, but 21Vianet does not provide any guarantees as to the length of any Geo Replication Lag under this SLA. Zone-redundant storage (ZRS) 3. It provides the following four abstractions (services)- Blob storage, Table storage, Queue storage, and File storage. For example, the D2s_v3 is a Premium Storage capable VM, while the D2_v3 is not capable of supporting Premium Storage Disks. "Service Credit" is the percentage of the Applicable Monthly Service Fees credited to you following Microsoft’s claim approval. Service Credits are Customer's sole and exclusive remedy for any failure to meet any Service Level. Only Premium Storage capable VMs support attaching Premium Storage to them. Excluded Transactions include pre-authentication failures; authentication failures; attempted transactions for storage accounts over their prescribed quotas; creation or deletion of containers, file shares, tables, or queues; clearing of queues; and copying blobs or files between storage accounts. Locally redundant storage (LRS) 2. “Primary Region” is a geographical region in which data within a storage account is located, as selected by you when creating the storage account. The calculation is like this: 99.99% * 99.99% > 99.99% * 99.99% * 99.99%. Some of these factors are: Spindle anti-starvation (an IO scheduling mechanism where new IO is not scheduled on spindle disks that have more than 100ms of pending IO). This agreement describes the commitment about uptime and connectivity of Microsoft Azure operated by 21vianet. Ninety (90) seconds (where the source and destination files are within the same storage account). 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GetBlockList, Table Query You cannot specify the Secondary Region associated with storage accounts. Once your data is stored in Azure storage, you can access that data any time and from anywhere. These facilities may be within the same geographical region or across two geographical regions. Microsoft is radically simplifying cloud dev and ops in first-of-its-kind Azure Preview portal at portal.azure.com Failed Storage Transactions do not include: Transaction requests that are throttled by the Storage Service due to a failure to obey appropriate back-off principles. Read transactions requests to RA-GRS Accounts for which you did not attempt to execute the request against Secondary Region associated with the storage account if the request to the Primary Region was not successful. You can directly read data from, but cannot write data to, the Secondary Region associated with RA-GRS Accounts. Unless as otherwise provided in a specific SLA, only one Service Credit is permitted per Service for an Applicable Monthly Period. What this means is that you don’t have a … You cannot directly read data from or write data to the Secondary Region associated with GRS Accounts. "Service Level" means the performance metric(s) set forth in this SLA that Microsoft agrees to meet in the delivery of the Services. But my impression is that the 99.99% SLA provided by Azure storage actually covers ALL three types of storage (table, queue and blob) already. Geo-redundant storage (GRS) 4. The Service Credit will be based on the estimated retail price for the applicable Service, as determined by us in our reasonable discretion. Release notes: Updated SLA to reflect guarantees for Azure File Storage. If you purchased more than one Service (not as a suite), then you may submit claims pursuant to the process described above as if each Service were covered by an individual SLA. Get Valid Page Blob Ranges, Two (2) seconds multiplied by the number of MBs transferred in the course of processing the request, Ninety (90) seconds (where the source and destination blobs are within the same storage account), Ninety (90) seconds (where the source and destination files are within the same storage account), PutBlockList Service Credits apply only to fees paid for the particular Service, Service Resource, or Service tier for which a Service Level has not been met. Actual and average times are expected to be much lower. To get an SLA with VMs in Azure you need to either host a multi-instance VM or a single instance VM using Premium Storage. 5.0. Release notes: Updated SLA to reflect guarantees for Azure File Storage. Get Azure innovation everywhere—bring the agility and innovation of cloud computing to your on-premises workloads. "Error Code" means an indication that an operation has failed, such as an HTTP status code in the 5xx range. When you create a storage account, you can select one of the following redundancy options: 1. Azure SQL Database is a very mature and advanced … We guarantee that at least 99.99% (99.9% for Cool Access Tier) of the time, we will successfully process requests to read data from Read Access-Geo Redundant Storage (RA-GRS) Accounts, provided that failed attempts to read data from the primary region are retried on the secondary region. We will provide at least 90 days’ notice for adverse material changes to this SLA. We guarantee that at least 99.99% (99.9% for Cool Access Tier) of the time, we will successfully process requests to read data from Read Access-Geo Redundant Storage (RA-GRS) Accounts, provided that failed attempts to read data from the primary region are retried on the secondary region. Installation Options. If the Total Storage Transactions in a given one-hour interval is zero, the error rate for that interval is 0%. If we determine that a Service Credit is owed to you, we will apply the Service Credit to your Applicable Monthly Service Fees. For licenses reserved, but not paid for, at the time of the Incident. 1.3 Last updated: December 2017 "Blob Storage Account" is a storage account specialized for storing data as blobs and provides the ability to specify an access tier indicating how frequently the data in that account is accessed. "Zone Redundant Storage (ZRS) Account" is a storage account for which data is replicated across multiple facilities. You cannot specify the Secondary Region associated with storage accounts. Release notes: Addition of files in storage accounts to the list of features covered by uptime guarantee. Maximum Processing Time includes only the time spent processing a transaction request within the Storage Service and does not include any time spent transferring the request to or from the Storage Service. We guarantee that at least 99.9% (99% for Cool Access Tier) of the time, we will successfully process requests to read data from Locally Redundant Storage (LRS), Zone Redundant Storage (ZRS), and Geo Redundant Storage (GRS) Accounts. The Blob Storage Service is designed to be highly available with a 99.9% SLA for normal storage and 99.99% SLA for RA-GRS replicated storage. Azure storage account key: Azure file shares may also be mounted with an Azure storage account key. Manages blobs, queues, tables and files in Microsoft Azure storage accounts. Azure Archive storage is a capable, flexible, and affordable storage solution which performs within advertised SLA and data durability figures. 1.2 Last updated: April 2017 To mount a file share this way, the storage account name is used as the username and the storage account key is used as a password. You store data in tables with rows and columns and you can use stored procedures, user-defined functions and all of the T-SQL language spec. Some of the features offered by Azure Cosmos DB are: Fully managed with 99.99% Availability SLA; Elastically and highly scalable (both throughput and storage) Because GRS and RA-GRS Accounts are replicated asynchronously to the Secondary Region, data written to the Primary Region of the storage account will not be immediately available in the Secondary Region. We provide financial backing to our commitment to achieve and maintain Service Levels for our Services. To move data, you must synchronously copy blobs from the block blob storage account to the hot access tier in a different account using the Put Block From URL API or a version of AzCopy that supports this API. "Customer" refers to the organization that has entered into the Agreement. "Error Rate" is the total number of Failed Storage Transactions divided by the Total Storage Transactions during a set time interval (currently set at one hour). The amount and method of calculation of Service Credits is described below in connection with each Service. "Locally Redundant Storage (LRS) Account" is a storage account for which data is replicated synchronously only within a Primary Region. "Total Storage Transactions" is the set of all storage transactions, other than Excluded Transactions, attempted within a one-hour interval across all storage accounts in the Storage Service in a given subscription. "Error Rate" is the total number of Failed Storage Transactions divided by the Total Storage Transactions during a set time interval (currently set at one hour). Access Visual Studio, Azure credits, Azure DevOps, and many other resources for creating, deploying, and managing applications. "Block Blob Storage Account" is a storage account specialized for storing data as block or append blobs on solid-state drives. We guarantee that at least 99.9% (99% for Cool Access Tier) of the time, we will successfully process requests to write data to Locally Redundant Storage (LRS) and Geo Redundant Storage (GRS) Accounts and Read Access-Geo Redundant Storage (RA-GRS) Accounts. For a claim related to Microsoft Azure, we must receive the claim within two months of the end of the billing month in which the Incident that is the subject of the claim occurred. Transaction requests having timeouts set lower than the respective Maximum Processing Times specified above. These terms will be fixed for term of your Agreement. Read transaction requests to RA-GRS Accounts that fail due to Geo-Replication Lag. Otherwise known as SLAs. Azure VMs and services share their data via mounted file shares, while on-premise applications access the files using the File Service REST API. These terms will be fixed for … “Claim” means a claim submitted by Customer to Microsoft pursuant to this SLA that a Service Level has not been met and that a … Hi, Thanks for the request. This tier also has a lower SLA (99%) when compared to hot tier (99.99%), and there is a per-GB charge for accessing the data. Service Credits apply only to fees paid for the particular Service, Service Resource, or Service tier for which a Service Level has not been met. "Average Error Rate" for a billing month is the sum of Error Rates for each hour in the billing month divided by the total number of hours in the billing month. The Service Credits awarded in any billing month for a particular Service or Service Resource will not, under any circumstance, exceed Customer's monthly service fees that Service or Service Resource, as applicable, in the billing month. If we do not achieve and maintain the Service Levels for each Service as described in this SLA, then you may be eligible for a credit towards a portion of your monthly service fees. "Cool Access Tier" is an attribute of a blob or account indicating it is infrequently accessed and has a lower availability service level than blobs in Hot Access Tier. "Management Portal" means the web interface, provided by Microsoft, through which customers may manage the Service. We guarantee that at least 99.9% (99% for Cool Access Tier) of the time, we will successfully process requests to read data from Locally Redundant Storage (LRS) and Geo Redundant Storage (GRS) Accounts. "Support Window" refers to the period of time during which a Service feature or compatibility with a separate product or service is supported. For these Services, any Service Credit that you may be eligible for will be credited in the form of service time (i.e., days) as opposed to service fees, and any references to “Applicable Monthly Service Fees” is deleted and replaced by “Applicable Monthly Period.”. Storage tiers in Azure Blob storage give users the ability to optimize data into cold and hot storage repositories. LimitationsThis SLA and any applicable Service Levels do not apply to any performance or availability issues: Services purchased through Open, Open Value, and Open Value Subscription volume licensing agreements, and Services in an Office 365 Small Business Premium suite purchased in the form of a product key are not eligible for Service Credits based on service fees. Microsoft Azure Storage Service Level Agreement (SLA) 1. Two (2) seconds multiplied by the number of MBs transferred in the course of processing the request. Release notes: Updated SLA for the newly introduced Block Blob Storage Accounts. Azure denotes Premium Storage capable VMs by putting an “s” in their name. "Success Code" means an indication that an operation has succeeded, such as an HTTP status code in the 2xx range. You can directly read data from, but cannot write data to, the Secondary Region associated with RA-GRS Accounts. 1.1 Last updated: April 2016 If we do not achieve and maintain the Service Levels for each Service as described in this SLA, then you may be eligible for a credit towards a portion of your monthly service fees. Release notes: Updated SLA for the newly introduced Blob Storage Accounts with the Cool Access Tier. 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