Storage Capacity and Security
Storage Everywhere, and Not a Drop to DrinkThe culprits for this storage capacity uncertainty include the different sorts of storage that may lurk in your enterprise, some of which may not be well-suited to sharing, and some of which may hail from separate vendors with less than fully compatible products. While it may be easiest to express your storage needs in terms of capacity, performance requirements play a major role. For instance, a 500GB database might fit on a single spindle, but storing that database on a single drive would probably deliver unacceptably poor performance. You could spread that database out over 10 drives to make up the performance gap, but that would leave you with under-utilization. Administrators must take a close look at the capacity and performance needs of their applications and take a careful stock of the storage pieces they have available. Companies can maximize capacity utilization while keeping performance at an acceptable level by identifying performance tiers in your applications and by pairing performance-intensive applications such as databases with less intensive applications, such as file storage and archiving. Storage virtualization products, such as those from LeftHand Networks, Seanodes and RevStor, can help un-silo currently unshared storage assets, such as direct attached storage units, or the local storage that typically sits unused on servers running VMware's ESX Server. --JB
A tally of the invoices from the storage systems you've purchased, stacked up against the data storage needs of your enterprise, suggests that your company has plenty of storage capacity on hand. However, inefficient "siloing" of your storage resources could place your vital systems at risk of running out of capacity, regardless of how those invoices add up.