Hardware manual

Group Administration Group monitoring
15–15
Monitoring storage pool free space
You must maintain sufficient free pool space to ensure that load balancing, thin provisioning, member removal,
snapshot, and replication operations perform optimally.
1. Click
Group and then Storage Pools. The Storage Pool Summary window appears.
2. Check the free pool space value in the Storage Pools panel. Dell
recommends that free pool space does not fall
below the following, whichever is smaller:
• 5% of the total pool space
• 100 GB multiplied by the number of pool members
Y
ou can increase free pool space by moving volumes from the low-space pool to a dif
ferent pool. See Moving a
volume to a pool on page 7
-5.
You can expand pool capacity by moving a member to the pool.
To sort the table, by click a column heading. The
table is sorted by Volume Template by default.
Monitoring group members
Member hardware problems typically cause event messages and alarms. Monitor the member hardware and replace
any failed components immediately.
1. Click
Group and then Members. The Group Disk Space panel shows the total amount of free space in the
group and in each pool (if applicable).
The
Group Members panel lists all members, the pool to which each member belongs, the capacity and
amount of free space, RAID policy, number of disks, status, PS Series Firmware version (should be the same
for all members), and the number of iSCSI connections to each member. (This indicates the number of volumes
or snapshots with data on that member that are connected to an initiator. Nothing connects directly to a
member.)
2. Check the following:
• Member status – Table 15-13 describes member status. If a member
is
offline, investigate the cause.
Volumes with data on an offline member are also offline. If a member has
a problem, double-click the
member to display additional information.
• Low free space – Low free space in a member might indicate
that overall group space is low. You can free
space in a member by adding more members to the same pool (the group distributes volume data across the
pool members).
Status Status of the operation. Monitoring replication partners on page 15-9
Monitoring failback operations on page 15-14
St
arted Time and date the operation started. Monitoring replication partners on page 15-9
Mon
itoring failback operations on page 15-14
Table 15-11: Alarms and Operations - Failback Operations Tab (Continued)
Column Description User Actions