#Diskkeeper run defrag windows#

All are setup with RAID 50 and two hot swappable drives. All of its iSCSI arrays have 14 drives some have 250GB hard drives while others have 760GB hard drives. But it also has one Fibre Channel (FC) array (HP StorageWorks EVA SAN), which is required for one of its applications. Thomas Memorial Hospital in South Charleston, W.V., relies mainly on an iSCSI SAN due to cost and ease of set up. вЂњI can run all of the servers at once without any issues, but if I stop Diskeeper even for a very short time, everything really slows down in a hurry,вЂќ said James Moore, operations and maintenance at Boeing. From his experience, no noticeable resources are consumed in running it.

#Diskkeeper run defrag windows#

Moore found more than 13,000 fragments on one Windows machine when he installed the defrag utility. Data is stored on some EMC disk arrays and an HP StorageWorks EVA SAN. James Moore, an operations and maintenance specialist at Boeing, has more than a dozen Windows servers running SQL Server, Windows Server 2003, and various business applications. Boeing Defrags WindowsДЄerospace giant Boeing is another company running defragmentation in a SAN environment. He said he experienced an 80 percent application performance increase from defragmentation of his drives. This creates a ton of fragmented files, whether they are on VMs or physical file servers. In his environment, a lot of temporary files are being created and deleted all day long. On average on each of these machines, he reported having to clean up about 7,000 fragments daily. On the HP arrays, some of the servers were 90 percent fragmented.

For the EqualLogic arrays, it runs inside the virtual machines running on those boxes.Д«ucci said he had observed a steady deterioration of performance over time. In the case of the HP arrays, Diskeeper is running on the servers attached to the SANs. According to Kenneth Bucci, a technical support specialist at the firm, customer complaints about performance ended when the company added DiskeeperвЂ™s defragmentation solution. Synectics Group of Allentown, Pa., has a 2TB HP MSA1000 and two Dell EqualLogic SANs, one 4TB and the other 3.5TB. As Stefan mentions, there are some really smart arrays out there where defragmentation won't make much of an impact, since they already cache or tier hot blocks or restructure data on the backend to optimize access.Whether fragmentation affects storage area networks ( SANs) is a matter of debate, but users nonetheless claim performance benefits from using defragmentation solutions in their data storage environments (see Does Fragmentation Hurt Storage Network Performance?). If you have direct-attached disk which is not great with random I/O, then you could improve read performance with defragmentation. How different storage targets deal with fragmentation is going to depend on the target.

The way that deduplication works meansВ that youвЂ™re going to end up with 99% fragmentation at some point - we granularly remove blocks between other blocks of data which is a natural cause of fragmentation (unless your storage target does not support sparse, in which case you need to run commvault defragmentation anyways (aka space reclamation). Storage Boxes manage the logical blocks themselves and use their own logic to keep access fast. You should never defrag SAN-LUNs, that only causes massive load on the Storage without doing anything for performance.