HP StorageWorks 4000/6000/8000 .HP StorageWorks SAN Design Reference Guide, Pa - Page 394
HP ProLiant DL380 G4 Storage Server configuration
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HP ProLiant DL380 G4 Storage Server configuration With up to six internal drives and fault-tolerant options for fans and power supplies, an HP ProLiant DL380 server acts as a high-capacity Exchange server. Other HP ProLiant servers can support 900 to 2,000 Exchange mailboxes. When configuring the server and storage, ensure that you have: • Sufficient RAM (1 GB) on the server. • Enough disks for the Exchange database volume, especially if you use RAID 5 RAIDsets or ADG. A larger number of disks improves database volume performance. The Exchange server internal RAID storage holds the transaction logs. HP recommends storing the transaction logs on a RAID array accelerated with a write-back cache, with battery backup. The transaction logs can be stored on an iSCSI NAS RAID array. For the sample configuration, the server includes a Smart Array 5i RAID controller option kit since the write cache for this controller can be set at 100%, increasing performance. RAID 1+0 is preferred for the database volume on the storage server. In the sample iSCSI NAS storage configuration: • The DL380 G4 Storage Server uses a Smart Array 6402 and Smart Array 6404 controller to access the disks for its RAID array. • 56 disks are available for RAID configurations. These disks sit in four rack-mountable HP nl StorageWorks Modular Smart Array 30 (MSA30) disk enclosures with 14 drives each. • A 40-disk RAID 1+0 configuration consists of an array of 10 disks in each of the four enclosures. The Exchange server accesses its database on the iSCSI NAS RAID 1+0 volume. 394 iSCSI storage