Cloud Storage Gateway (CSG) provides two types of gateways: file gateway and block gateway. Each type of gateway has multiple specifications. This topic describes the features supported by different specifications of these gateways.

File gateways

File gateways support two network transmission protocols: Network File System (NFS) and Server Message Block (SMB). You can use both protocols to transfer files over LAN.
  • NFS allows you to access file systems in UNIX, such as AIX, HP-UX, and other Linux-based operating systems.
  • SMB allows you to access file systems in Windows.
Table 1. Features of file gateways
Feature Basic Standard Enhanced Advanced Documentation
Basic features Cache disks ✓ ✓ ✓ ✓ Manage cache disks
NFS and CIFS services ✓ ✓ ✓ ✓ Manage shares
AD and LDAP domains ✓ ✓ ✓ ✓ Configure AD, LDAP, and DNS
Operations Modify gateways ✓ ✓ ✓ ✓ Other supported operations
Configure tags ✓ ✓ ✓ ✓ Manage tags
Back up gateways × ✓ ✓ × Back up file gateways
Update gateway versions ✓ ✓ ✓ ✓ Upgrade
Upgrade gateways ✓ ✓ ✓ ✓ Upgrade a file gateway
Upgrade the network bandwidth ✓ ✓ ✓ ✓ Upgrade the public bandwidth
Upload logs ✓ ✓ ✓ ✓ Log management
Advanced features Associate a share with multiple OSS buckets × × ✓ ✓ Associate a share with multiple OSS buckets
Remote sync ✓ ✓ ✓ ✓ Manage shares
Express synchronization × ✓ ✓ ✓ Express synchronization
Transfer acceleration ✓ ✓ ✓ ✓ Enable transfer acceleration
Server-side encryption ✓ ✓ ✓ ✓ Create a share
Gateway-side encryption × × ✓ ✓ Enable gateway encryption
Intelligent archiving × ✓ ✓ ✓ Manage shares
Intelligent caching ✓ ✓ ✓ ✓ N/A
Intelligent replication ✓ ✓ ✓ ✓ Replicate data
Ignore deletion ✓ ✓ ✓ ✓ Manage shares
MIME support ✓ ✓ ✓ ✓ N/A
Note In the preceding table, the check sign (✓) indicates that the feature is supported, and the cross sign (×) indicates that the feature is not supported.

Block gateways

Block gateways provide data access services by using the Internet Small Computer System Interface (iSCSI) protocol. iSCSI is a storage technology based on the Internet and SCSI-3 protocols. iSCSI can be used to access Windows and UNIX operating systems.

Table 2. Features of block gateways
Feature Basic Standard Enhanced Advanced Documentation
Basic features Cache disks ✓ ✓ ✓ ✓ Manage cache disks
iSCSI service ✓ ✓ ✓ ✓ Manage iSCSI volumes
Operations Modify gateways ✓ ✓ ✓ ✓ What to do next
Configure tags ✓ ✓ ✓ ✓ Manage tags
Update gateway versions ✓ ✓ ✓ ✓ Update gateway versions
Upgrade gateways ✓ ✓ ✓ ✓ Upgrade a block gateway
Configure the network bandwidth ✓ ✓ ✓ ✓ Upgrade the public bandwidth
Upload logs ✓ ✓ ✓ ✓ Log management
Advanced features CHAP support ✓ ✓ ✓ ✓ Create an iSCSI volume
Note In the preceding table, the check sign (✓) indicates that the feature is supported, and the cross sign (×) indicates that the feature is not supported.