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System Requirements - EXPRESSCLUSTER X 4.2 for Linux
The following tables provides general description of the EXPRESSCLUSTER system requirements for informational purpose only. Please consult your regional NEC representative for actual product offering and ordering information.
EXPRESSCLUSTER Server
| Machine | x86_64 server IBM POWER server IBM POWER LE server |
| OS | x86_64 Red Hat Enterprise Linux 8.2 Red Hat Enterprise Linux 8.1 Red Hat Enterprise Linux 7.8 Red Hat Enterprise Linux 7.7 Red Hat Enterprise Linux 7.6 Red Hat Enterprise Linux 7.5 Red Hat Enterprise Linux 7.4 Red Hat Enterprise Linux 7.3 Red Hat Enterprise Linux 7.2 Red Hat Enterprise Linux 6.10 Red Hat Enterprise Linux 6.9 Red Hat Enterprise Linux 6.8 MIRACLE LINUX 8 Asianux Inside Asianux Server 7 ==MIRACLE LINUX V7 (SP3) Asianux Server 7 ==MIRACLE LINUX V7 (SP2) Asianux Server 7 ==MIRACLE LINUX V7 (SP1) Asianux Server 4 ==MIRACLE LINUX V6 (SP7) Asianux Server 4 ==MIRACLE LINUX V6 (SP6) Novell SUSE LINUX Enterprise Server 15 (SP1) Novell SUSE LINUX Enterprise Server 15 Novell SUSE LINUX Enterprise Server 12 (SP4) Novell SUSE LINUX Enterprise Server 12 (SP2) Novell SUSE LINUX Enterprise Server 12 (SP1) Novell SUSE LINUX Enterprise Server 11 (SP4) Novell SUSE LINUX Enterprise Server 11 (SP3) Oracle Linux 7.7 UEK4 Oracle Linux 7.5 Oracle Linux 7.3 UEK4 Oracle Linux 6.6 Ubuntu 18.04.3 LTS Ubuntu 16.04.3 LTS Ubuntu 14.04 LTS Amazon Linux 2 IBM POWER (Replicator, Replicator DR, Agents except Database Agent are not supported) Red Hat Enterprise Linux 7.6 Red Hat Enterprise Linux 7.5 Red Hat Enterprise Linux 7.4 Red Hat Enterprise Linux 7.3 Red Hat Enterprise Linux 6.10 Red Hat Enterprise Linux 6.9 Red Hat Enterprise Linux 6.8 Novell SUSE LINUX Enterprise Server 11 (SP4) IBM POWER LE (Replicator, Replicator DR and Agents are not supported) Red Hat Enterprise Linux 7.7 Red Hat Enterprise Linux 7.6 Red Hat Enterprise Linux 7.5 Red Hat Enterprise Linux 7.4 Red Hat Enterprise Linux 7.3 Novell SUSE LINUX Enterprise Server 12 (SP2) Novell SUSE LINUX Enterprise Server 12 (SP1) (*) For the kernel version of CentOS supported by EXPRESSCLUSTER, see the supported kernel version of Red Hat Enterprise Linux. |
| Memory | User mode : 200MB(excepting for optional products) Kernel mode : When the synchronization mode is used: 1MB + (number of request queues x I/O size) + (2MB + Difference Bitmap Size x number of mirror disk resources and hybrid disk resources) When the asynchronous mode is used: 1MB + (number of request queues x I/O size) + (3MB + (number of asynchronous queues x I/O size) + (I/O size / 4KB x 8B + 0.5KB) x (max size of history file / I/O size + number of asynchronous queues) + (Difference Bitmap Size) ) x number of mirror disk resources and hybrid disk resources When the kernel mode LAN heartbeat driver is used: 8MB When the keepalive driver is used: 8MB (*) Estimated I/O size is as follows: - 1MB (Ubuntu16) - 124KB (Ubuntu14, RHEL7) - 4KB (RHEL6) (*) For the setting value of the number of request queues and asynchronization queues, see “Understanding mirror disk resources” of “Group resource details” in the "Reference Guide". |
| Disk | Right after installation : 300MB During operation : 5.0GB |
Supported distributions and kernel versions
Cluster WebUI
| Browser | Microsoft Internet Explorer 11 Microsoft Internet Explorer 10 Firefox Google Chrome |
| Memory | 500MB or more |
| Disk | 200MB or more |