FAQ and answers¶
The following is a summary of information such as how to use SAKURA Cloud, how to specify settings, and service specifications. Please refer to this information when using SAKURA Cloud.
- Technical items
- About limits for the line, router, and switch
- What is the approximate line bandwidth of the shared segment? / Are there any bandwidth limits?
- Are there packets which cannot pass through shared segments?
- Is there a bandwidth limit for the switch?
- How many servers or appliances can be connected to the switch?
- Is there a bandwidth limit for router + switch?
- Is communication disconnected when changing the plan (bandwidth change) for the router + switch?
- What kinds of fees are incurred when changing the plan (bandwidth change) for router + switch?
- Are there traffic limits depending on the volume of transferred data?
- How is the bandwidth limit decided when exceeding the estimate for the data transfer volume?
- Is there a plan that guarantees line bandwidth?
- Is there a limit on connection to switch/router + switch from the server?
- Is there a limit on the number of servers that can be connected to switch or router + switch?
- Is there a packet that cannot pass through the switch or router + switch?
- Is it possible to use hybrid connection and bridge connection at the same switch?
- When using promiscuous mode at lines connected to the shared segment, it is possible to acquire packets addressed to other users. Is this a problem?
- How many seconds is the MAC address aging time for the switch?
- I am having trouble using L2TPv3/IPsec to connect between server which I constructed in SAKURA Cloud and the network at my company. What could be causing this problem?
- Is mirroring of packets possible?
- What is the difference between hybrid connection and bridge connection?
- Is virtual NIC multi-queue (CPU core balancing) supported?
- About network settings
- Is it possible to use a Bonding configuration for the virtual server NIC?
- Are there IP addresses that cannot be used for router + switch?
- What is the maximum number of addresses that can be assigned to one virtual server?
- The NIC interface name is changed. Why does this happen?
- In what cases does the MAC address for the NIC installed at the server change?
- Is it possible to assign a fixed address for the NIC MAC address, or to change to an arbitrary address?
- Are there limits on the number of rules which can be set for the packet filter?
- Can redundant configuration be used for VRRP?
- Are there restrictions for usage of virtual IP addresses (VIP) when using VRRP?
- Is it possible to fix the port range used for FTP upload of the archive and ISO image?
- Access to servers using Linux OS is slow and unexpected packets are observed. How can I resolve these problems?
- Packet loss occurs in the case of sudden externally-directed traffic from the server. Are there any methods for reducing this loss?
- We constructed our own DSR-type load balancer. Communication with the balancing destination slows down after a certain period of time has expired. What is the cause of this problem and how can the problem be addressed?
- I want to change from the NIC driver which was specified when creating the server. How can I do this?
- About backbone
- About the host server
- About storage
- Are there restrictions for IOPS (number of I/O per second) to the disk, data transfer bandwidth, etc?
- Is it possible to add multiple disks to the server and use RAID configuration?
- Are measures taken to prevent data leakage from disks which were deleted (contracts cancelled)?
- When multiple disks are connected to the server, problems occur such as an unintended disks becoming the startup disk or being mounted on a separate partition. What is the cause of these problems?
- Appliances
- Response to facility trouble
- Are storage devices redundant?/What operation is performed in the event of storage device trouble?
- Are archives created using the [Archive] function affected by trouble of the [Disk] function?
- Is redundancy used for the host server that stores the virtual server?/What kind of operation is performed if the host server has trouble?
- Is the network redundant?
- How is notification given in the event of trouble?
- About limits for the line, router, and switch
- Security items
- Data center
- Control panel
- Is a work log saved on the control panel?
- If necessary, will SAKURA internet provide the work log for the control panel?
- What happens if the access level of a user is changed while that user is logged on?
- Isn’t it possible to log in to the control panel from the server that was constructed in the SAKURA Cloud?
- Third-party certification
- Server
- How can I default settings to prevent SSH authentication using the root password?
- How can I re-enable SSH login using a password?
- Is it possible to protect against invalid connection and attacks immediately after creating servers?
- If there is damage such as unauthorized access to the server, etc., can I have the log provided?
- Other
- How are the host servers, storage systems, and other resources shared by users separated virtually?
- Are there methods for controlling the cloud other than the control panel or API?
- What kind of consideration is given to security during development of SAKURA Cloud?
- What kind of security policies are used for networks?
- Support content and notification of fault
- Service level agreement (SLA)
- Fault/maintenance information
- How does SAKURA internet notify customers of maintenance?
- At what timing are maintenance notifications sent?
- Is emergency maintenance performed?
- How are customers notified in the event of fault?
- Are records kept of past accidents and fault?
- Is monitoring for fault conducted?
- Is a support center operated 24 hours a day, 365 days a year for cloud fault?
- Other
- Is it possible to perform a load test and vulnerability diagnosis?
- Is data deleted when a disk is deleted?
- Does an agreement exist in the event of sudden termination of service?
- What is the scope of operation?
- Where is data stored?
- What kind of environment is required for operation of the control panel?
- Is it possible to use right-click mouse operations at the remote screen?
- Has a certain range been set for IPv4 address that can be used in the cloud?
- How are IP addresses assigned when connecting to shared segments?
- Can licenses for Microsoft products be used on SAKURA Cloud?
- Is Windows Server provided?
- What is the difference between hybrid connection and bridge connection?
- What should I do if I forgot my root password for the virtual server?
- Is it possible to add IP addresses?
- What type of line is used?
- Is it possible to upgrade the line?
- Can I use a SSL server certificate?
- I mistakenly deleted the disk. Can it be restored?
- Can I use an original domain?
- I am using a server with memory of 6GB or more, but only memory up to 4GB is recognized.
- Are packets discarded via packet filters displayed in the activity graph?
- What kind of methods are available for confirming the resource status on the Cloud?
- How does SAKURA respond in the event of an information security incident?
- As shown in the API document, I tried to perform API operation using curl, but it did not run successfully. What are some possible causes of the problem?
- I restarted a server which uses the Windows Server Plan with Office. Then, when I started Office, a license authentication wizard was displayed. What should I do?
- A message stating "BUG: soft lockup" is output from the kernel. How can I resolve this?
- Charging
- Object Storage
- Secure Mobile Connect
- Regarding the contract
- Technical items
- Is communication between devices possible?
- I entered the wrong PIN and the SIM is locked.
- Can the service be used overseas?
- What is the area in which communication is possible?
- Is it possible to connect to the Internet from a closed network?
- How many SIMs can be registered to a single mobile gateway?
- Why is the line periodically disconnected?
- SophosUTM
- Network protection function
- Is it possible to permit or block only domestic IP addresses?
- What is the approximate number of rules that can be set for the Firewall?
- Are there any functions that can be used for DoS attack countermeasures?
- What is the approximate frequency for updating of IPS rules (signature)?
- Is it possible to control rules for Firewall by the time period?
- E-mail protection function
- VPN function
- Is there an upper limit for the number of users that can be registered or the number of simultaneous connections for the remote access function?
- Is IPsec possible?
- For the SSL-VPN function, is there any equipment for which verification of operations has been completed for communication with other appliances?
- For the site-to-site connection function, is there any equipment for which verification of operations has been completed for communication with other appliances?
- Other
- Are there any functions which cannot be used with SAKURA Cloud?
- Is automatic scaling up possible for threshold monitoring via hardware information in the log report function?
- Is it possible to automatically delete a log file?
- Is it possible to transfer log information from Sophos UTM to another server?
- Is any information available other than documents of SAKURA Cloud?
- What types of log file formats can be acquired?
- Is it possible to engage in comprehensive consultation for settings, operation, monitoring, etc.?
- Network protection function